critical
CVE-2026-2781
firefox: thunderbird: Integer overflow in the Libraries component in NSS
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
Red Hat6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Trivy's own label is CRITICAL. Rated critical by NVD, Photon OS. Rated lower by AlmaLinux (high), Amazon (high), Oracle (high), Rocky Linux (high), Red Hat (medium), Ubuntu (medium).
Description
Integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, Thunderbird 140.8, and Firefox ESR 115.35.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| Photon OS 4.0 | nss, nss-devel, nss-libs | 3.72-7.ph4 |
| Photon OS 5.0 | mozjs, mozjs-devel, nss and 2 more | 140.7.0-2.ph5 and 1 more |
| alma 8 | firefox, thunderbird | 140.8.0-2.el8_10.alma.1 and 1 more |
| alma 9 | firefox, firefox-x11, thunderbird | 140.8.0-2.el9_7.alma.1 and 1 more |
| amazon linux 2 | thunderbird | 140.8.0-1.amzn2.0.1 |
| amazon linux 2023 | firefox, firefox-debuginfo, firefox-debugsource | 140.8.0-1.amzn2023.0.1 |
| chainguard | firefox, firefox-esr, nss | 140.8.0-r0 and 1 more |
| debian 11 | firefox-esr, nss, thunderbird | 140.8.0esr-1~deb11u1 and 2 more |
| debian 12 | firefox-esr, nss, thunderbird | 140.8.0esr-1~deb12u1 and 2 more |
| debian 13 | firefox-esr, nss, thunderbird | 140.8.0esr-1~deb13u1 and 2 more |
| debian 14 | firefox-esr, nss, thunderbird | 140.8.0esr-1 and 2 more |
| echo | firefox-esr, nss, thunderbird | 140.8.0esr-1~deb12u1 and 2 more |
Show all 96 entries from 45 sources
| Source | Package | Fixed in |
|---|---|---|
| Photon OS 4.0 | nss | 3.72-7.ph4 |
| Photon OS 4.0 | nss-devel | 3.72-7.ph4 |
| Photon OS 4.0 | nss-libs | 3.72-7.ph4 |
| Photon OS 5.0 | mozjs | 140.7.0-2.ph5 |
| Photon OS 5.0 | mozjs-devel | 140.7.0-2.ph5 |
| Photon OS 5.0 | nss | 3.78-12.ph5 |
| Photon OS 5.0 | nss-devel | 3.78-12.ph5 |
| Photon OS 5.0 | nss-libs | 3.78-12.ph5 |
| alma 8 | firefox | 140.8.0-2.el8_10.alma.1 |
| alma 8 | thunderbird | 140.8.0-1.el8_10.alma.1 |
| alma 9 | firefox | 140.8.0-2.el9_7.alma.1 |
| alma 9 | firefox-x11 | 140.8.0-2.el9_7.alma.1 |
| alma 9 | thunderbird | 140.8.0-1.el9_7.alma.1 |
| amazon linux 2 | thunderbird | 140.8.0-1.amzn2.0.1 |
| amazon linux 2023 | firefox | 140.8.0-1.amzn2023.0.1 |
| amazon linux 2023 | firefox-debuginfo | 140.8.0-1.amzn2023.0.1 |
| amazon linux 2023 | firefox-debugsource | 140.8.0-1.amzn2023.0.1 |
| chainguard | firefox | 140.8.0-r0 |
| chainguard | firefox-esr | 140.8.0-r0 |
| chainguard | nss | 3.120.1-r0 |
| debian 11 | firefox-esr | 140.8.0esr-1~deb11u1 |
| debian 11 | nss | 2:3.61-1+deb11u5 |
| debian 11 | thunderbird | 1:140.8.0esr-1~deb11u1 |
| debian 12 | firefox-esr | 140.8.0esr-1~deb12u1 |
| debian 12 | nss | 2:3.87.1-1+deb12u2 |
| debian 12 | thunderbird | 1:140.8.0esr-1~deb12u1 |
| debian 13 | firefox-esr | 140.8.0esr-1~deb13u1 |
| debian 13 | nss | 2:3.110-1+deb13u1 |
| debian 13 | thunderbird | 1:140.8.0esr-1~deb13u1 |
| debian 14 | firefox-esr | 140.8.0esr-1 |
| debian 14 | nss | 2:3.121-1 |
| debian 14 | thunderbird | 1:140.8.0esr-1 |
| echo | firefox-esr | 140.8.0esr-1~deb12u1 |
| echo | nss | 2:3.87.1-1+deb12u2 |
| echo | thunderbird | 1:140.8.0esr-1~deb12u1 |
| Oracle Linux 7 | firefox | 140.8.0-2.0.1.el7_9 |
| Oracle Linux 8 | firefox | 140.8.0-2.0.1.el8_10 |
| Oracle Linux 8 | thunderbird | 140.8.0-1.0.1.el8_10 |
| Oracle Linux 9 | firefox | 140.8.0-2.0.1.el9_7 |
| Oracle Linux 9 | firefox-x11 | 140.8.0-2.0.1.el9_7 |
| Oracle Linux 9 | thunderbird | 140.8.0-1.0.1.el9_7 |
| rapidfort alpine 3.20 | thunderbird | 144.0-r0 |
| rapidfort alpine 3.21 | thunderbird | 144.0-r0 |
| rapidfort alpine 3.22 | thunderbird | 144.0-r0 |
| rapidfort alpine 3.23 | thunderbird | 144.0-r0 |
| rapidfort amazon linux 2023 | firefox | 140.8.0-1.amzn2023.0.1 |
| rapidfort debian 12 | firefox-esr | 0:140.8.0esr-1, 0:140.8.0esr-1~deb11u1, 0:140.8.0esr-1~deb12u1, 0:140.8.0esr-1~deb13u1 |
| rapidfort debian 12 | nss | 0:3.110-1+deb13u1, 2:3.121-1 |
| rapidfort debian 12 | thunderbird | 0:140.8.0esr-1~deb11u1, 0:140.8.0esr-1~deb12u1, 0:140.8.0esr-1~deb13u1, 1:140.8.0esr-1 |
| rapidfort debian 13 | firefox-esr | 0:140.8.0esr-1, 0:140.8.0esr-1~deb11u1, 0:140.8.0esr-1~deb12u1, 0:140.8.0esr-1~deb13u1 |
| rapidfort debian 13 | nss | 0:3.110-1+deb13u1, 2:3.121-1 |
| rapidfort debian 13 | thunderbird | 0:140.8.0esr-1~deb11u1, 0:140.8.0esr-1~deb12u1, 0:140.8.0esr-1~deb13u1, 1:140.8.0esr-1 |
| rapidfort fedora 43 | firefox | 148.0.2-1.fc43 |
| rapidfort fedora 43 | firefox-langpacks | 148.0.2-1.fc43 |
| rapidfort fedora 43 | thunderbird | 145.0-1.fc43 |
| rapidfort fedora 43 | thunderbird-librnp-rnp | 145.0-1.fc43 |
| rapidfort Oracle Linux 10 | firefox | 0:140.8.0-2.0.1.el10_1 |
| rapidfort Oracle Linux 10 | thunderbird | 0:140.8.0-2.0.1.el10_1 |
| rapidfort Oracle Linux 9 | firefox | 0:140.8.0-2.0.1.el9_7 |
| rapidfort Oracle Linux 9 | firefox-x11 | 0:140.8.0-2.0.1.el9_7 |
| rapidfort Oracle Linux 9 | thunderbird | 0:140.8.0-1.0.1.el9_7 |
| rapidfort ubuntu 20.04 | nss | 2:3.98-1ubuntu0.1 |
| rapidfort ubuntu 20.04 | rf-nss | 2:3.98-1ubuntu0.1 |
| rapidfort ubuntu 20.04 | thunderbird | no fix listed |
| rapidfort ubuntu 22.04 | nss | 2:3.98-1ubuntu0.1 |
| rapidfort ubuntu 22.04 | rf-nss | 2:3.98-1ubuntu0.1 |
| rapidfort ubuntu 22.04 | thunderbird | no fix listed |
| rapidfort ubuntu 24.04 | nss | 2:3.98-1ubuntu0.1 |
| rapidfort ubuntu 24.04 | rf-nss | 2:3.98-1ubuntu0.1 |
| rapidfort ubuntu 24.04 | thunderbird | no fix listed |
| Red Hat | firefox | no fix listed |
| Red Hat | thunderbird | no fix listed |
| rocky 10 | firefox | 140.8.0-2.el10_1 |
| rocky 10 | thunderbird | 140.8.0-2.el10_1 |
| rocky 8 | firefox | 140.8.0-2.el8_10 |
| rocky 8 | thunderbird | 140.8.0-1.el8_10 |
| rocky 9 | firefox | 140.8.0-2.el9_7 |
| rocky 9 | firefox-x11 | 140.8.0-2.el9_7 |
| rocky 9 | thunderbird | 140.8.0-1.el9_7 |
| root.io debian 11 | nss | 2:3.61-1+deb11u5 |
| root.io debian 11 | rootio-nss | 2:3.61-1+deb11u5 |
| root.io debian 12 | rootio-nss | 2:3.87.1-1+deb12u2 |
| root.io debian 13 | rootio-nss | 2:3.110-1+deb13u1 |
| root.io ubuntu 24.04 | nss | 2:3.98-1ubuntu0.1 |
| root.io ubuntu 24.04 | rootio-nss | 2:3.98-1ubuntu0.1 |
| ubuntu 16.04-ESM | nss | 2:3.28.4-0ubuntu0.16.04.14+esm5 |
| ubuntu 18.04-ESM | nss | 2:3.35-2ubuntu2.16+esm1 |
| ubuntu 20.04-ESM | nss | 2:3.98-0ubuntu0.20.04.2+esm1 |
| ubuntu 22.04 | nss | 2:3.98-0ubuntu0.22.04.3 |
| ubuntu 22.04 | thunderbird | no fix listed |
| ubuntu 24.04 | nss | 2:3.98-1ubuntu0.1 |
| ubuntu 25.10 | nss | 2:3.114-1ubuntu0.1 |
| ubuntu 26.04 | nss | 2:3.120-1ubuntu1 |
| ubuntu 26.10 | nss | 2:3.120-1ubuntu1 |
| wolfi | firefox | 140.8.0-r0 |
| wolfi | nss | 3.120.1-r0 |
References
- https://access.redhat.com/errata/RHSA-2026:3516
- https://access.redhat.com/security/cve/CVE-2026-2781
- https://bugzilla.mozilla.org/show_bug.cgi?id=2009552
- https://bugzilla.redhat.com/2440219
- https://bugzilla.redhat.com/2442284
- https://bugzilla.redhat.com/2442287
- https://bugzilla.redhat.com/2442288
- https://bugzilla.redhat.com/2442290
All 135 references
- https://bugzilla.redhat.com/2442291
- https://bugzilla.redhat.com/2442292
- https://bugzilla.redhat.com/2442294
- https://bugzilla.redhat.com/2442295
- https://bugzilla.redhat.com/2442297
- https://bugzilla.redhat.com/2442298
- https://bugzilla.redhat.com/2442300
- https://bugzilla.redhat.com/2442302
- https://bugzilla.redhat.com/2442304
- https://bugzilla.redhat.com/2442307
- https://bugzilla.redhat.com/2442308
- https://bugzilla.redhat.com/2442309
- https://bugzilla.redhat.com/2442312
- https://bugzilla.redhat.com/2442313
- https://bugzilla.redhat.com/2442314
- https://bugzilla.redhat.com/2442316
- https://bugzilla.redhat.com/2442318
- https://bugzilla.redhat.com/2442319
- https://bugzilla.redhat.com/2442320
- https://bugzilla.redhat.com/2442322
- https://bugzilla.redhat.com/2442324
- https://bugzilla.redhat.com/2442325
- https://bugzilla.redhat.com/2442326
- https://bugzilla.redhat.com/2442327
- https://bugzilla.redhat.com/2442328
- https://bugzilla.redhat.com/2442329
- https://bugzilla.redhat.com/2442331
- https://bugzilla.redhat.com/2442333
- https://bugzilla.redhat.com/2442334
- https://bugzilla.redhat.com/2442335
- https://bugzilla.redhat.com/2442337
- https://bugzilla.redhat.com/2442342
- https://bugzilla.redhat.com/2442343
- https://bugzilla.redhat.com/show_bug.cgi?id=2440219
- https://bugzilla.redhat.com/show_bug.cgi?id=2442284
- https://bugzilla.redhat.com/show_bug.cgi?id=2442287
- https://bugzilla.redhat.com/show_bug.cgi?id=2442288
- https://bugzilla.redhat.com/show_bug.cgi?id=2442290
- https://bugzilla.redhat.com/show_bug.cgi?id=2442291
- https://bugzilla.redhat.com/show_bug.cgi?id=2442292
- https://bugzilla.redhat.com/show_bug.cgi?id=2442294
- https://bugzilla.redhat.com/show_bug.cgi?id=2442295
- https://bugzilla.redhat.com/show_bug.cgi?id=2442297
- https://bugzilla.redhat.com/show_bug.cgi?id=2442298
- https://bugzilla.redhat.com/show_bug.cgi?id=2442300
- https://bugzilla.redhat.com/show_bug.cgi?id=2442302
- https://bugzilla.redhat.com/show_bug.cgi?id=2442304
- https://bugzilla.redhat.com/show_bug.cgi?id=2442307
- https://bugzilla.redhat.com/show_bug.cgi?id=2442308
- https://bugzilla.redhat.com/show_bug.cgi?id=2442309
- https://bugzilla.redhat.com/show_bug.cgi?id=2442312
- https://bugzilla.redhat.com/show_bug.cgi?id=2442313
- https://bugzilla.redhat.com/show_bug.cgi?id=2442314
- https://bugzilla.redhat.com/show_bug.cgi?id=2442316
- https://bugzilla.redhat.com/show_bug.cgi?id=2442318
- https://bugzilla.redhat.com/show_bug.cgi?id=2442319
- https://bugzilla.redhat.com/show_bug.cgi?id=2442320
- https://bugzilla.redhat.com/show_bug.cgi?id=2442322
- https://bugzilla.redhat.com/show_bug.cgi?id=2442324
- https://bugzilla.redhat.com/show_bug.cgi?id=2442325
- https://bugzilla.redhat.com/show_bug.cgi?id=2442326
- https://bugzilla.redhat.com/show_bug.cgi?id=2442327
- https://bugzilla.redhat.com/show_bug.cgi?id=2442328
- https://bugzilla.redhat.com/show_bug.cgi?id=2442329
- https://bugzilla.redhat.com/show_bug.cgi?id=2442331
- https://bugzilla.redhat.com/show_bug.cgi?id=2442333
- https://bugzilla.redhat.com/show_bug.cgi?id=2442334
- https://bugzilla.redhat.com/show_bug.cgi?id=2442335
- https://bugzilla.redhat.com/show_bug.cgi?id=2442337
- https://bugzilla.redhat.com/show_bug.cgi?id=2442342
- https://bugzilla.redhat.com/show_bug.cgi?id=2442343
- https://creativecommons.org/licenses/by/4.0/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2447
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2757
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2758
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2759
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2760
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2761
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2762
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2763
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2764
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2765
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2766
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2767
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2768
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2769
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2770
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2771
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2772
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2773
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2774
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2775
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2776
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2777
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2778
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2779
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2780
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2781
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2782
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2783
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2784
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2785
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2786
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2787
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2788
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2789
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2790
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2791
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2792
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2793
- https://errata.almalinux.org/9/ALSA-2026-3516.html
- https://errata.rockylinux.org/RLSA-2026:3516
- https://linux.oracle.com/cve/CVE-2026-2781.html
- https://linux.oracle.com/errata/ELSA-2026-3984.html
- https://lists.debian.org/debian-lts-announce/2026/03/msg00012.html
- https://nvd.nist.gov/vuln/detail/CVE-2026-2781
- https://ubuntu.com/security/notices/USN-8071-1
- https://ubuntu.com/security/notices/USN-8071-2
- https://www.cve.org/CVERecord?id=CVE-2026-2781
- https://www.mozilla.org/security/advisories/mfsa2026-13/
- https://www.mozilla.org/security/advisories/mfsa2026-15/
- https://www.mozilla.org/security/advisories/mfsa2026-15/#CVE-2026-2781
- https://www.mozilla.org/security/advisories/mfsa2026-16/
- https://www.mozilla.org/security/advisories/mfsa2026-17/
- https://www.mozilla.org/security/advisories/mfsa2026-17/#CVE-2026-2781
- https://www.mozilla.org/security/advisories/mfsa2026-31/
- https://www.mozilla.org/security/advisories/mfsa2026-31/#CVE-2026-2781