CVE-2026-7598
Description
A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauth_password of the file src/userauth.c. Such manipulation of the argument username_len/password_len leads to integer overflow. The attack may be launched remotely. The name of the patch is 256d04b60d80bf1190e96b0ad1e91b2174d744b1. A patch should be applied to remediate this issue.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | fixed | 1.11.1-3 |
| debian | sid | fixed | 1.11.1-3 |
| debian | trixie | affected | |
| sles | affected | | |
| windows | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| libssh2 | libssh2 | {"endIncluding":"1.11.1"} | |
References
- https://github.com/libssh2/libssh2/
- https://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1
- https://github.com/libssh2/libssh2/pull/1858
- https://vuldb.com/submit/805564
- https://vuldb.com/vuln/360555
- https://vuldb.com/vuln/360555/cti
- https://security-tracker.debian.org/tracker/CVE-2026-7598
- https://www.suse.com/security/cve/CVE-2026-7598.html
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-7598
CWEs
CWE-189 CWE-190
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.