critical
CVE-2020-14343
PyYAML: incomplete fix for CVE-2020-1747
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GHSA9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Red Hat9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Trivy's own label is CRITICAL. Rated critical by NVD, GHSA, CBL-Mariner, Photon OS. Rated lower by Red Hat (medium), AlmaLinux (medium), Oracle (medium), Rocky Linux (medium), Ubuntu (medium).
Description
A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| CBL-Mariner 2.0 | PyYAML | 0:5.4.1-1.cm2 |
| Photon OS 1.0 | PyYAML | 3.12-6.ph1 |
| Photon OS 2.0 | PyYAML | 3.12-7.ph2 |
| Photon OS 3.0 | PyYAML | 3.13-6.ph3 |
| pip::GitHub Security Advisory pip | pyyaml | 5.4 |
| alma 8 | python38:3.8::python38-Cython, python38:3.8::python38-PyMySQL, python38:3.8::python38-asn1crypto and 26 more | 0.29.14-4.module_el8.6.0+2778+cd494b30 and 26 more |
| alpine 3.11 | py3-yaml | 5.3.1-r1 |
| alpine 3.12 | py3-yaml | 5.3.1-r1 |
| alpine 3.13 | py3-yaml | 5.3.1-r2 |
| alpine 3.14 | py3-yaml | 5.4-r0 |
| alpine 3.15 | py3-yaml | 5.4-r0 |
| alpine 3.16 | py3-yaml | 5.4-r0 |
Show all 184 entries from 32 sources
| Source | Package | Fixed in |
|---|---|---|
| CBL-Mariner 2.0 | PyYAML | 0:5.4.1-1.cm2 |
| Photon OS 1.0 | PyYAML | 3.12-6.ph1 |
| Photon OS 2.0 | PyYAML | 3.12-7.ph2 |
| Photon OS 3.0 | PyYAML | 3.13-6.ph3 |
| pip::GitHub Security Advisory pip | pyyaml | 5.4 |
| alma 8 | python38:3.8::python38-Cython | 0.29.14-4.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-PyMySQL | 0.10.1-1.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-asn1crypto | 1.2.0-3.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-atomicwrites | 1.3.0-8.module_el8.4.0+2510+cb4d423d |
| alma 8 | python38:3.8::python38-attrs | 19.3.0-3.module_el8.4.0+2510+cb4d423d |
| alma 8 | python38:3.8::python38-cffi | 1.13.2-3.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-chardet | 3.0.4-19.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-cryptography | 2.8-3.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-idna | 2.8-6.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-markupsafe | 1.1.1-6.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-mod_wsgi | 4.6.8-3.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-more-itertools | 7.2.0-5.module_el8.4.0+2510+cb4d423d |
| alma 8 | python38:3.8::python38-packaging | 19.2-3.module_el8.4.0+2510+cb4d423d |
| alma 8 | python38:3.8::python38-pluggy | 0.13.0-3.module_el8.4.0+2510+cb4d423d |
| alma 8 | python38:3.8::python38-ply | 3.11-10.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-psycopg2 | 2.8.4-4.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-psycopg2-doc | 2.8.4-4.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-psycopg2-tests | 2.8.4-4.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-py | 1.8.0-8.module_el8.4.0+2510+cb4d423d |
| alma 8 | python38:3.8::python38-pycparser | 2.19-3.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-pyparsing | 2.4.5-3.module_el8.4.0+2510+cb4d423d |
| alma 8 | python38:3.8::python38-pysocks | 1.7.1-4.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-pytest | 4.6.6-3.module_el8.4.0+2510+cb4d423d |
| alma 8 | python38:3.8::python38-pytz | 2019.3-3.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-pyyaml | 5.4.1-1.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-requests | 2.22.0-9.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-scipy | 1.3.1-4.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-six | 1.12.0-10.module_el8.6.0+2778+cd494b30 |
| alma 8 | python38:3.8::python38-wcwidth | 0.1.7-16.module_el8.4.0+2510+cb4d423d |
| alpine 3.11 | py3-yaml | 5.3.1-r1 |
| alpine 3.12 | py3-yaml | 5.3.1-r1 |
| alpine 3.13 | py3-yaml | 5.3.1-r2 |
| alpine 3.14 | py3-yaml | 5.4-r0 |
| alpine 3.15 | py3-yaml | 5.4-r0 |
| alpine 3.16 | py3-yaml | 5.4-r0 |
| alpine 3.17 | py3-yaml | 5.4-r0 |
| alpine 3.18 | py3-yaml | 5.4-r0 |
| alpine 3.19 | py3-yaml | 5.4-r0 |
| alpine 3.20 | py3-yaml | 5.4-r0 |
| alpine 3.21 | py3-yaml | 5.4-r0 |
| alpine 3.22 | py3-yaml | 5.4-r0 |
| alpine 3.23 | py3-yaml | 5.4-r0 |
| alpine 3.24 | py3-yaml | 5.4-r0 |
| alpine edge | py3-yaml | 5.4-r0 |
| debian 11 | pyyaml | 5.3.1-4 |
| debian 12 | pyyaml | 5.3.1-4 |
| debian 13 | pyyaml | 5.3.1-4 |
| debian 14 | pyyaml | 5.3.1-4 |
| echo | pyyaml | 5.3.1-4 |
| Oracle Linux 8 | python38 | 3.8.6-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-Cython | 0.29.14-4.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-PyMySQL | 0.10.1-1.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-asn1crypto | 1.2.0-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-babel | 2.7.0-10.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-cffi | 1.13.2-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-chardet | 3.0.4-19.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-cryptography | 2.8-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-debug | 3.8.6-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-devel | 3.8.6-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-idle | 3.8.6-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-idna | 2.8-6.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-jinja2 | 2.10.3-4.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-libs | 3.8.6-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-lxml | 4.4.1-5.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-markupsafe | 1.1.1-6.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-mod_wsgi | 4.6.8-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-numpy | 1.17.3-5.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-numpy-doc | 1.17.3-5.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-numpy-f2py | 1.17.3-5.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-pip | 19.3.1-1.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-pip-wheel | 19.3.1-1.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-ply | 3.11-10.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-psutil | 5.6.4-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-psycopg2 | 2.8.4-4.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-psycopg2-doc | 2.8.4-4.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-psycopg2-tests | 2.8.4-4.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-pycparser | 2.19-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-pysocks | 1.7.1-4.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-pytz | 2019.3-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-pyyaml | 5.4.1-1.module+el8.4.0+20219+c17d6bc1 |
| Oracle Linux 8 | python38-requests | 2.22.0-9.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-rpm-macros | 3.8.6-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-scipy | 1.3.1-4.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-setuptools | 41.6.0-4.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-setuptools-wheel | 41.6.0-4.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-six | 1.12.0-10.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-test | 3.8.6-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-tkinter | 3.8.6-3.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-urllib3 | 1.25.7-4.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-wheel | 0.33.6-5.module+el8.4.0+20068+32a535e2 |
| Oracle Linux 8 | python38-wheel-wheel | 0.33.6-5.module+el8.4.0+20068+32a535e2 |
| rocky 8 | python38 | 3.8.6-3.module+el8.4.0+595+c96abaa2 |
| rocky 8 | python38-Cython | 0.29.14-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-PyMySQL | 0.10.1-1.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-asn1crypto | 1.2.0-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-babel | 2.7.0-10.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-cffi | 1.13.2-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-cryptography | 2.8-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-debug | 3.8.6-3.module+el8.4.0+595+c96abaa2 |
| rocky 8 | python38-devel | 3.8.6-3.module+el8.4.0+595+c96abaa2 |
| rocky 8 | python38-idle | 3.8.6-3.module+el8.4.0+595+c96abaa2 |
| rocky 8 | python38-idna | 2.8-6.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-jinja2 | 2.10.3-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-libs | 3.8.6-3.module+el8.4.0+595+c96abaa2 |
| rocky 8 | python38-lxml | 4.4.1-5.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-markupsafe | 1.1.1-6.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-mod_wsgi | 4.6.8-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-numpy | 1.17.3-5.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-numpy-doc | 1.17.3-5.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-numpy-f2py | 1.17.3-5.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-pip | 19.3.1-1.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-pip-wheel | 19.3.1-1.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-psutil | 5.6.4-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-psycopg2 | 2.8.4-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-psycopg2-doc | 2.8.4-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-psycopg2-tests | 2.8.4-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-pycparser | 2.19-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-pytz | 2019.3-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-pyyaml | 5.4.1-1.module+el8.4.0+595+c96abaa2 |
| rocky 8 | python38-requests | 2.22.0-9.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-rpm-macros | 3.8.6-3.module+el8.4.0+595+c96abaa2 |
| rocky 8 | python38-scipy | 1.3.1-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-setuptools | 41.6.0-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-setuptools-wheel | 41.6.0-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-six | 1.12.0-10.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-test | 3.8.6-3.module+el8.4.0+595+c96abaa2 |
| rocky 8 | python38-tkinter | 3.8.6-3.module+el8.4.0+595+c96abaa2 |
| rocky 8 | python38-urllib3 | 1.25.7-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-wheel | 0.33.6-5.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38-wheel-wheel | 0.33.6-5.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38 | 3.8.6-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-Cython | 0.29.14-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-PyMySQL | 0.10.1-1.module+el8.5.0+672+ab6eb015 |
| rocky 8 | python38:3.8::python38-asn1crypto | 1.2.0-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-babel | 2.7.0-10.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-cffi | 1.13.2-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-chardet | 3.0.4-19.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-cryptography | 2.8-3.module+el8.5.0+672+ab6eb015 |
| rocky 8 | python38:3.8::python38-debug | 3.8.6-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-devel | 3.8.6-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-idle | 3.8.6-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-idna | 2.8-6.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-jinja2 | 2.10.3-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-libs | 3.8.6-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-lxml | 4.4.1-5.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-markupsafe | 1.1.1-6.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-mod_wsgi | 4.6.8-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-numpy | 1.17.3-5.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-numpy-doc | 1.17.3-5.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-numpy-f2py | 1.17.3-5.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-pip | 19.3.1-1.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-pip-wheel | 19.3.1-1.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-ply | 3.11-10.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-psutil | 5.6.4-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-psycopg2 | 2.8.4-4.module+el8.6.0+794+eba84017 |
| rocky 8 | python38:3.8::python38-psycopg2-doc | 2.8.4-4.module+el8.6.0+794+eba84017 |
| rocky 8 | python38:3.8::python38-psycopg2-tests | 2.8.4-4.module+el8.6.0+794+eba84017 |
| rocky 8 | python38:3.8::python38-pycparser | 2.19-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-pysocks | 1.7.1-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-pytz | 2019.3-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-pyyaml | 5.4.1-1.module+el8.5.0+672+ab6eb015 |
| rocky 8 | python38:3.8::python38-requests | 2.22.0-9.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-rpm-macros | 3.8.6-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-scipy | 1.3.1-4.module+el8.5.0+672+ab6eb015 |
| rocky 8 | python38:3.8::python38-setuptools | 41.6.0-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-setuptools-wheel | 41.6.0-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-six | 1.12.0-10.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-test | 3.8.6-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-tkinter | 3.8.6-3.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-urllib3 | 1.25.7-4.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-wheel | 0.33.6-5.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python38:3.8::python38-wheel-wheel | 0.33.6-5.module+el8.4.0+570+c2eaf144 |
| rocky 8 | python39-chardet | 3.0.4-19.module+el8.4.0+574+843c4898 |
| rocky 8 | python39-ply | 3.11-10.module+el8.4.0+574+843c4898 |
| rocky 8 | python39-pysocks | 1.7.1-4.module+el8.4.0+574+843c4898 |
| ubuntu 20.04 | pyyaml | 5.3.1-1ubuntu0.1 |
| ubuntu 20.04-ESM | pyyaml | 5.3.1-1ubuntu0.1 |
| ubuntu 20.10 | pyyaml | 5.3.1-2ubuntu0.1 |
| ubuntu 21.04 | pyyaml | 5.3.1-3ubuntu1 |
References
- https://access.redhat.com/security/cve/CVE-2020-14343
- https://bugzilla.redhat.com/show_bug.cgi?id=1860466
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14343
- https://errata.almalinux.org/8/ALSA-2021-2583.html
- https://errata.rockylinux.org/RLSA-2021:2583
- https://github.com/SeldonIO/seldon-core/issues/2252
- https://github.com/advisories/GHSA-8q59-q68h-6hv4
- https://github.com/pypa/advisory-database/tree/main/vulns/pyyaml/PYSEC-2021-142.yaml
All 21 references
- https://github.com/yaml/pyyaml
- https://github.com/yaml/pyyaml/commit/a001f2782501ad2d24986959f0239a354675f9dc
- https://github.com/yaml/pyyaml/issues/420
- https://github.com/yaml/pyyaml/issues/420#issuecomment-663673966
- https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load%28input%29-Deprecation
- https://linux.oracle.com/cve/CVE-2020-14343.html
- https://linux.oracle.com/errata/ELSA-2021-2583.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-14343
- https://pypi.org/project/PyYAML
- https://ubuntu.com/security/notices/USN-4940-1
- https://www.cve.org/CVERecord?id=CVE-2020-14343
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html