Vulnerability · Published Jun 23, 2026 · Assigned by mitre
CVE-2026-56968
Low 3.7
In plain English
A low-severity security flaw in GNU SASL from GNU. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.7Low
Exploit odds (30 days)0.4%top 64.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, which could result in memory disclosure via a crafted server.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | gsasl | 2.2.0-1+deb12u2 | DEBIAN-CVE-2026-56968 |
| Debian:13 | gsasl | 2.2.2-1.1+deb13u2 | DEBIAN-CVE-2026-56968 |
| Debian:14 | gsasl | 2.2.4-1 | DEBIAN-CVE-2026-56968 |
| Ubuntu:24.04:LTS | gsasl | no fix listed | UBUNTU-CVE-2026-56968 |
| Ubuntu:25.10 | gsasl | no fix listed | UBUNTU-CVE-2026-56968 |
| Ubuntu:26.04:LTS | gsasl | no fix listed | UBUNTU-CVE-2026-56968 |
Affected products (as reported)
Weakness: CWE-839 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N