CVE-2026-7598

HIGH 7.3

libssh2 userauth.c userauth_password integer overflow

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-190 CWE-189
Vendor	n/a
Product	libssh2
Published	May 1, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / libssh2

1.11.0 1.11.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/360555 vuldb.com: https://vuldb.com/vuln/360555/cti vuldb.com: https://vuldb.com/submit/805564 github.com: https://github.com/libssh2/libssh2/pull/1858 github.com: https://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1 github.com: https://github.com/libssh2/libssh2/

Credits

🔍 dapickle (VulDB User)