CVE catalog
CVE-2026-56968
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.
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.41% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | gsasl | sid | 2.2.4-2 | fixed |
| Debian | gsasl | forky | 2.2.4-2 | fixed |
| Debian | gsasl | trixie | 2.2.2-1.1+deb13u2 | fixed |
| Debian | gsasl | trixie-security | 2.2.2-1.1+deb13u2 | fixed |
| Debian | gsasl | bookworm | 2.2.0-1+deb12u1 | vulnerable |
| Debian | gsasl | bookworm-security | 2.2.0-1+deb12u2 | fixed |
| Cpe | gsasl | Not reported | Not reported | vulnerable |
| Cpe | sasl | Not reported | 2.2.4 | fixed |
| Cpe | debian_linux | Not reported | Not reported | unknown |
| Suse | gsasl | linux enterprise server 16.0 | 2.2.1-160000.4.1 | fixed |
| Suse | gsasl | linux enterprise server for sap applications 16.0 | 2.2.1-160000.4.1 | fixed |
| Opensuse | gsasl | leap 16.0 | 2.2.1-160000.4.1 | fixed |
| Ubuntu | gsasl | pro | 1.10.0-4 | vulnerable |
| Ubuntu | gsasl | pro | 1.10.0-5 | vulnerable |
| Ubuntu | gsasl | pro | 1.10.0-5ubuntu0.1~esm1 | vulnerable |
| Ubuntu | gsasl | 24.04 | 2.2.0-2ubuntu1 | vulnerable |
| Ubuntu | gsasl | 24.04 | 2.2.0-2ubuntu2 | vulnerable |
| Ubuntu | gsasl | 24.04 | 2.2.1-1ubuntu1 | vulnerable |
| Ubuntu | gsasl | 24.04 | 2.2.1-1willsync1 | vulnerable |
| Ubuntu | gsasl | 24.04 | 2.2.1-1willsync1build1 | vulnerable |
| Ubuntu | gsasl | 24.04 | 2.2.1-1willsync1build2 | vulnerable |
| Ubuntu | gsasl | 24.04 | 2.2.1-1willsync1ubuntu0.1 | vulnerable |
| Ubuntu | gsasl | 25.10 | 2.2.1-1willsync1ubuntu1 | vulnerable |
| Ubuntu | gsasl | 25.10 | 2.2.2-2ubuntu1 | vulnerable |
| Ubuntu | gsasl | 25.10 | 2.2.2-2ubuntu1.1 | vulnerable |
| Ubuntu | gsasl | 26.04 | 2.2.2-2ubuntu1 | vulnerable |
| Ubuntu | gsasl | 26.04 | 2.2.2-4ubuntu1 | vulnerable |
| Ubuntu | gsasl | 26.04 | 2.2.2-4ubuntu1.1 | vulnerable |
| Cpe | sasl | Not reported | 2.2.4 | fixed |
| Cpe | debian_linux | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | gsasl | source | sid | 2.2.4-1 | not yet assigned | Not reported | Not reported |
| Debian | gsasl | source | forky | 2.2.4-1 | not yet assigned | Not reported | Not reported |
| Debian | gsasl | source | trixie | 2.2.2-1.1+deb13u2 | not yet assigned | Not reported | Not reported |
| Debian | gsasl | source | bookworm | 2.2.0-1+deb12u2 | not yet assigned | Not reported | Not reported |
| Cpe | sasl | cpe | Not reported | 2.2.4 | Not reported | Not reported | Not reported |
| Suse | gsasl | rpm | linux enterprise server 16.0 | 2.2.1-160000.4.1 | Not reported | SUSE-SU-2026:22631-1 | Not reported |
| Suse | gsasl | rpm | linux enterprise server for sap applications 16.0 | 2.2.1-160000.4.1 | Not reported | SUSE-SU-2026:22631-1 | Not reported |
| Opensuse | gsasl | rpm | leap 16.0 | 2.2.1-160000.4.1 | Not reported | OPENSUSE-SU-2026:21303-1 | Not reported |
| Cpe | sasl | cpe | Not reported | 2.2.4 | Not reported | NVD-CVE-2026-56968 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [gsasl]Affected
Details (4)
2.2.0-1+deb12u1· amd64 · bookwormAffected · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u1· arm64 · bookwormAffected · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u2· amd64 · bookworm-securityFixed · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u2· arm64 · bookworm-securityFixed · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
- [gsasl-common]Affected
Source package: [gsasl]
Details (4)
2.2.0-1+deb12u1· all · bookwormAffected · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u1· all · bookwormAffected · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u2· all · bookworm-securityFixed · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u2· all · bookworm-securityFixed · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
- [gsasl-doc]Affected
Source package: [gsasl]
Details (4)
2.2.0-1+deb12u1· all · bookwormAffected · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u1· all · bookwormAffected · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u2· all · bookworm-securityFixed · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u2· all · bookworm-securityFixed · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
- [libgsasl18]Affected
Source package: [gsasl]
Details (4)
2.2.0-1+deb12u1· amd64 · bookwormAffected · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u1· arm64 · bookwormAffected · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u2· amd64 · bookworm-securityFixed · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u2· arm64 · bookworm-securityFixed · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
- [libgsasl7-dev]Affected
Source package: [gsasl]
Details (4)
2.2.0-1+deb12u1· amd64 · bookwormAffected · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u1· arm64 · bookwormAffected · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u2· amd64 · bookworm-securityFixed · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u2· arm64 · bookworm-securityFixed · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
- [libgsasl-dev]Affected
Source package: [gsasl]
Details (4)
2.2.0-1+deb12u1· amd64 · bookwormAffected · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u1· arm64 · bookwormAffected · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u2· amd64 · bookworm-securityFixed · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
2.2.0-1+deb12u2· arm64 · bookworm-securityFixed · Fixed:
2.2.0-1+deb12u2nvd · gsasl · debian · bookworm; nvd · gsasl · debian · 12
[Debian 13 (Trixie)]
- [gsasl]Fixed
Details (4)
2.2.2-1.1+deb13u2· amd64 · trixieFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· arm64 · trixieFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· amd64 · trixie-securityFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· arm64 · trixie-securityFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
- [gsasl-common]Fixed
Source package: [gsasl]
Details (4)
2.2.2-1.1+deb13u2· all · trixieFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· all · trixieFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· all · trixie-securityFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· all · trixie-securityFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
- [gsasl-doc]Fixed
Source package: [gsasl]
Details (4)
2.2.2-1.1+deb13u2· all · trixieFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· all · trixieFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· all · trixie-securityFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· all · trixie-securityFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
- [libgsasl18]Fixed
Source package: [gsasl]
Details (4)
2.2.2-1.1+deb13u2· amd64 · trixieFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· arm64 · trixieFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· amd64 · trixie-securityFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· arm64 · trixie-securityFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
- [libgsasl-dev]Fixed
Source package: [gsasl]
Details (4)
2.2.2-1.1+deb13u2· amd64 · trixieFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· arm64 · trixieFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· amd64 · trixie-securityFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
2.2.2-1.1+deb13u2· arm64 · trixie-securityFixed · Fixed:
2.2.2-1.1+deb13u2nvd · gsasl · debian · 13
Observed:
References
- [https://ftp.gnu.org/gnu/gsasl/]
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_21303-1.json]
- [https://lists.debian.org/debian-lts-announce/2026/07/msg00049.html]
- [https://lists.debian.org/debian-security-announce/2026/msg00259.html]
- [https://lists.gnu.org/archive/html/help-gsasl/2026-06/msg00000.html]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-56968]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-56968]
- [https://osv.dev/vulnerability/SUSE-SU-2026:22631-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-56968]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:21303-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-56968]
- [https://www.gnu.org/software/gsasl/]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]