libssh2 userauth.c userauth_password integer overflow_CVE-2026-7598

6.9 / 10

MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X

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.

Basic Information

ID CVE-2026-7598

Source VulDB

Published May 1, 2026 at 21:30

Affected Product

Vendor n/a

Product libssh2

Version 1.11.0

Affected Versions n/a libssh2 1.11.0
n/a libssh2 1.11.1

CWE Classification

CWE-190 CWE-189

References

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    "published": "2026-05-01T21:30:11.006Z",
    "modified": "2026-05-01T21:30:11.006Z",
    "type": "cve",
    "title": "libssh2 userauth.c userauth_password integer overflow",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/360555\nhttps://vuldb.com/vuln/360555/cti\nhttps://vuldb.com/submit/805564\nhttps://github.com/libssh2/libssh2/pull/1858\nhttps://github.com/libssh2/libssh2/commit/256d04b60d80bf1190e96b0ad1e91b2174d744b1\nhttps://github.com/libssh2/libssh2/",
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    "sourceData": "n/a libssh2 1.11.0\nn/a libssh2 1.11.1",
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    "cvss": {
        "score": 6.9,
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