CVE catalog
CVE-2026-95209
An issue in gnutls v3.8.13 causes legitimate CA certificates to be rejected, leading to a Denial of Service (DoS).
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.24% · Oct 25, 2026
An issue in gnutls v3.8.13 causes legitimate CA certificates to be rejected, leading to a Denial of Service (DoS).
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 | gnutls28 | sid | 3.8.13-1 | vulnerable |
| Debian | gnutls28 | forky | 3.8.13-1 | vulnerable |
| Debian | gnutls28 | trixie | 3.8.9-3+deb13u4 | vulnerable |
| Debian | gnutls28 | trixie-security | 3.8.9-3+deb13u4 | vulnerable |
| Debian | gnutls28 | bookworm | 3.7.9-2+deb12u7 | vulnerable |
| Debian | gnutls28 | bookworm-security | 3.7.9-2+deb12u7 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-1ubuntu4 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-1ubuntu5 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-12ubuntu1 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-12ubuntu2 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-12ubuntu2.1 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-12ubuntu2.2 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-12ubuntu2.3 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-12ubuntu2.4 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-12ubuntu2.5 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-12ubuntu2.6 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-12ubuntu2.7 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-12ubuntu2.8 | vulnerable |
| Ubuntu | gnutls26 | pro | 2.12.23-12ubuntu2.10+esm1 | vulnerable |
| Ubuntu | gnutls28 | pro | 3.8.3-1.1ubuntu3.1+Fips1 | vulnerable |
| Ubuntu | gnutls28 | pro | 3.8.3-1.1ubuntu3.4+Fips1 | vulnerable |
| Ubuntu | gnutls28 | pro | 3.8.3-1.1ubuntu3.4+Fips1.1 | vulnerable |
| Ubuntu | gnutls28 | pro | 3.8.3-1.1ubuntu3.5+Fips1.1 | vulnerable |
| Ubuntu | gnutls28 | pro | 3.8.3-1.1ubuntu3.6+Fips1.2 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.1-5ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.2-2ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.2-4ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.2-5ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.1 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.2 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.3 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.4 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.5 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.6 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.7 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.8 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.9 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.1-4ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.1-4ubuntu6 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.1-4ubuntu7 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu2 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3.1 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3.2 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3.3 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3.4 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3.5 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3.6 | vulnerable |
| Ubuntu | gnutls28 | 26.10 | 3.8.12-2ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 26.10 | 3.8.12-2ubuntu1.1 | vulnerable |
| Ubuntu | gnutls28 | 26.10 | 3.8.13-1ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 26.04 | 3.8.9-3ubuntu2 | vulnerable |
| Ubuntu | gnutls28 | 26.04 | 3.8.10-3ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 26.04 | 3.8.12-2ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 26.04 | 3.8.12-2ubuntu1.1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | gnutls28 | source | sid | (unfixed) | unimportant | Not reported | [1150522] |
| Debian | gnutls28 | source | forky | (unfixed) | unimportant | Not reported | [1150522] |
| Debian | gnutls28 | source | trixie | (unfixed) | unimportant | Not reported | [1150522] |
| Debian | gnutls28 | source | bookworm | (unfixed) | unimportant | Not reported | [1150522] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [gnutls-bin]Affected
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· amd64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
- [gnutls-doc]Affected
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· all · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· all · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· all · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· all · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
- [guile-gnutls]Affected
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· amd64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
- [libgnutls28-dev]Affected
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· amd64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
- [libgnutls30]Affected
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· amd64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
- [libgnutls-dane0]Affected
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· amd64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
- [libgnutls-openssl27]Affected
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· amd64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
- [libgnutlsxx30]Affected
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookwormAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· amd64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
3.7.9-2+deb12u7· arm64 · bookworm-securityAffected
nvd · gnutls28 · debian · bookworm; nvd · gnutls28 · debian · 12
[Debian 13 (Trixie)]
- [gnutls-bin]Affected
Source package: [gnutls28]
Details (4)
3.8.9-3+deb13u4· amd64 · trixieAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· arm64 · trixieAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· amd64 · trixie-securityAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· arm64 · trixie-securityAffected
nvd · gnutls28 · debian · 13
- [gnutls-doc]Affected
Source package: [gnutls28]
Details (4)
3.8.9-3+deb13u4· all · trixieAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· all · trixieAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· all · trixie-securityAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· all · trixie-securityAffected
nvd · gnutls28 · debian · 13
- [libgnutls28-dev]Affected
Source package: [gnutls28]
Details (4)
3.8.9-3+deb13u4· amd64 · trixieAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· arm64 · trixieAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· amd64 · trixie-securityAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· arm64 · trixie-securityAffected
nvd · gnutls28 · debian · 13
- [libgnutls30t64]Affected
Source package: [gnutls28]
Details (4)
3.8.9-3+deb13u4· amd64 · trixieAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· arm64 · trixieAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· amd64 · trixie-securityAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· arm64 · trixie-securityAffected
nvd · gnutls28 · debian · 13
- [libgnutls-dane0t64]Affected
Source package: [gnutls28]
Details (4)
3.8.9-3+deb13u4· amd64 · trixieAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· arm64 · trixieAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· amd64 · trixie-securityAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· arm64 · trixie-securityAffected
nvd · gnutls28 · debian · 13
- [libgnutls-openssl27t64]Affected
Source package: [gnutls28]
Details (4)
3.8.9-3+deb13u4· amd64 · trixieAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· arm64 · trixieAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· amd64 · trixie-securityAffected
nvd · gnutls28 · debian · 13
3.8.9-3+deb13u4· arm64 · trixie-securityAffected
nvd · gnutls28 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-95209]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-95209]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-95209]
- [https://security-tracker.debian.org/tracker/CVE-2026-95209]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-95209.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3843.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]