CVE-2026-59850
Public on 2026-07-21
Modified on 2026-09-11
Description
A flaw was found in libssh. If data packets are processed after a channel is closed, channel data callbacks can be invoked after the associated data has already been freed, leading to crashes or possible use-after-free conditions.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2023 | libssh | 2026-09-29 | ALAS2023-2026-3096 | Fixed |
| Amazon Linux 2027 Preview | libssh | Not Affected | ||
| Amazon Linux 2 - Core | libssh2 | Not Affected | ||
| Amazon Linux 2023 | libssh2 | Not Affected |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| NVD | CVSSv3 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |