Vulnerabilities / CVE-2020-15917

critical

CVE-2020-15917

common/session.c in Claws Mail before 3.17.6 has a protocol violation ...

Published Modified
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

Trivy's own label is CRITICAL. Rated critical by NVD.

Description

common/session.c in Claws Mail before 3.17.6 has a protocol violation because suffix data after STARTTLS is mishandled.

Affected packages and fixed versions

SourcePackageFixed in
alpine 3.12claws-mail3.17.6-r0
alpine 3.13claws-mail3.17.6-r0
alpine 3.14claws-mail3.17.6-r0
alpine 3.15claws-mail3.17.6-r0
alpine 3.16claws-mail3.17.6-r0
alpine 3.17claws-mail3.17.6-r0
alpine 3.18claws-mail3.17.6-r0
alpine 3.19claws-mail3.17.6-r0
alpine 3.20claws-mail3.17.6-r0
alpine 3.21claws-mail3.17.6-r0
alpine 3.22claws-mail3.17.6-r0
alpine 3.23claws-mail3.17.6-r0
Show all 21 entries from 21 sources
SourcePackageFixed in
alpine 3.12claws-mail3.17.6-r0
alpine 3.13claws-mail3.17.6-r0
alpine 3.14claws-mail3.17.6-r0
alpine 3.15claws-mail3.17.6-r0
alpine 3.16claws-mail3.17.6-r0
alpine 3.17claws-mail3.17.6-r0
alpine 3.18claws-mail3.17.6-r0
alpine 3.19claws-mail3.17.6-r0
alpine 3.20claws-mail3.17.6-r0
alpine 3.21claws-mail3.17.6-r0
alpine 3.22claws-mail3.17.6-r0
alpine 3.23claws-mail3.17.6-r0
alpine 3.24claws-mail3.17.6-r0
alpine edgeclaws-mail3.17.6-r0
debian 10claws-mailno fix listed
debian 11claws-mail3.17.6-1
debian 12claws-mail3.17.6-1
debian 13claws-mail3.17.6-1
debian 14claws-mail3.17.6-1
debian 9claws-mailno fix listed
echoclaws-mail3.17.6-1

References

All 10 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.