libssh2 userauth.c userauth_password integer overflow
CVE-2026-7598 is fixed in 10 products on 1 platform, first by libssh2-1t64 1.11.1-1ubuntu0.26.04.1, released May 1, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| cargo-c · amzn 2023 | 0.10.19-1.amzn2023.0.3 | ALAS2023-2026-1872 | Jun 22, 2026 |
| cargo-c-debuginfo · amzn 2023 | 0.10.19-1.amzn2023.0.3 | ALAS2023-2026-1872 | Jun 22, 2026 |
| libssh2 · Debian 12.15 (bookworm) | 1.10.0-3+deb12u1 | DEBIAN-CVE-2026-7598 | May 27, 2026 |
| libssh2 · Debian 13.5 (trixie) | 1.11.1-1+deb13u1 | DEBIAN-CVE-2026-7598 | May 27, 2026 |
| libssh2 · Debian 14 | 1.11.1-3 | DEBIAN-CVE-2026-7598 | May 27, 2026 |
| libssh2 · amzn 2023 | 1.10.0-1.amzn2023.0.4 | ALAS2023-2026-1779 | Jun 8, 2026 |
| libssh2-1t64 · Ubuntu 24.04.5 LTS (noble) | 1.11.0-4.1ubuntu0.24.04.1 | libssh2-1t64 1.11.0-4.1ubuntu0.24.04.1 | May 27, 2026 |
| libssh2-1t64 · Ubuntu 25.10 (questing) | 1.11.1-1ubuntu0.25.10.1 | libssh2-1t64 1.11.1-1ubuntu0.25.10.1 | May 27, 2026 |
| libssh2-1t64 · Ubuntu 26.04.1 LTS (resolute) | 1.11.1-1ubuntu0.26.04.1 | libssh2-1t64 1.11.1-1ubuntu0.26.04.1 | May 1, 2026 |
| libssh2-debuginfo · amzn 2023 | 1.10.0-1.amzn2023.0.4 | ALAS2023-2026-1779 | Jun 8, 2026 |
| libssh2-debugsource · amzn 2023 | 1.10.0-1.amzn2023.0.4 | ALAS2023-2026-1779 | Jun 8, 2026 |
| libssh2-devel · amzn 2023 | 1.10.0-1.amzn2023.0.4 | ALAS2023-2026-1779 | Jun 8, 2026 |
| libssh2-docs · amzn 2023 | 1.10.0-1.amzn2023.0.4 | ALAS2023-2026-1779 | Jun 8, 2026 |
| libssh2_org · opensuse-leap 16.0 | 1.11.1-160000.5.1 | OPENSUSE-SU-2026:21549-1 | Aug 10, 2026 |
| libssh2_org · sles 15.6 | 1.11.0-150600.20.6.1 | SUSE-SU-2026:3541-1 | Aug 10, 2026 |
| libssh2_org · sles 15.7 | 1.11.0-150600.20.6.1 | SUSE-SU-2026:3541-1 | Aug 10, 2026 |
| libssh2_org · sles 16.0 | 1.11.1-160000.5.1 | SUSE-SU-2026:23225-1 | Aug 10, 2026 |
| rust-cargo-c-debugsource · amzn 2023 | 0.10.19-1.amzn2023.0.3 | ALAS2023-2026-1872 | Jun 22, 2026 |
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