CVE-2025-14831 Gnutls: gnutls: denial of service via excessive resource consumption during certificate verification
Medium 5.3
Published
Updated
Check this codebase for CVE-2025-14831 and fix it if it is affected.
What it is: CVE-2025-14831 is a medium-severity denial of service vulnerability in Cert Manager support for Red Hat OpenShift release 1.18, published on 9 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-14831 in the wild and no public exploit code.
Affected product: Cert Manager support for Red Hat OpenShift release 1.18. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2025-14831/ (Markdown: https://insights.sbomify.com/CVE-2025-14831/index.md)
Attackers can cause denial of service in applications using GnuTLS by submitting malicious certificates that trigger excessive resource consumption.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-14831?
CVE-2025-14831 is a medium-severity denial of service vulnerability in Cert Manager support for Red Hat OpenShift release 1.18, published on 9 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in GnuTLS. This vulnerability allows a denial of service (DoS) by excessive CPU (Central Processing Unit) and memory consumption via specially crafted malicious certificates containing a large number of name constraints and subject alternative names (SANs).
Weakness: CWE-407
Which versions are affected by CVE-2025-14831?
Linux distribution packages (40)
gnutls Red Hat:enterprise_linux_eus:10.0 | All versions | 0:3.8.9-9.el10_0.17 |
gnutls-c++ Red Hat:enterprise_linux_eus:10.0 | All versions | 0:3.8.9-9.el10_0.17 |
gnutls-c++-debuginfo Red Hat:enterprise_linux_eus:10.0 | All versions | 0:3.8.9-9.el10_0.17 |
gnutls-dane Red Hat:enterprise_linux_eus:10.0 | All versions | 0:3.8.9-9.el10_0.17 |
gnutls-dane-debuginfo Red Hat:enterprise_linux_eus:10.0 | All versions | 0:3.8.9-9.el10_0.17 |
gnutls-debuginfo Red Hat:enterprise_linux_eus:10.0 | All versions | 0:3.8.9-9.el10_0.17 |
gnutls-debugsource Red Hat:enterprise_linux_eus:10.0 | All versions | 0:3.8.9-9.el10_0.17 |
gnutls-devel Red Hat:enterprise_linux_eus:10.0 | All versions | 0:3.8.9-9.el10_0.17 |
gnutls-fips Red Hat:enterprise_linux_eus:10.0 | All versions | 0:3.8.9-9.el10_0.17 |
gnutls-utils Red Hat:enterprise_linux_eus:10.0 | All versions | 0:3.8.9-9.el10_0.17 |
gnutls-utils-debuginfo Red Hat:enterprise_linux_eus:10.0 | All versions | 0:3.8.9-9.el10_0.17 |
gnutls-c++ Red Hat:rhel_e4s:9.2::appstream | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-c++-debuginfo Red Hat:rhel_e4s:9.2::appstream | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-dane Red Hat:rhel_e4s:9.2::appstream | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-dane-debuginfo Red Hat:rhel_e4s:9.2::appstream | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-debuginfo Red Hat:rhel_e4s:9.2::appstream | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-debugsource Red Hat:rhel_e4s:9.2::appstream | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-devel Red Hat:rhel_e4s:9.2::appstream | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-utils Red Hat:rhel_e4s:9.2::appstream | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-utils-debuginfo Red Hat:rhel_e4s:9.2::appstream | All versions | 0:3.7.6-21.el9_2.5 |
gnutls Red Hat:rhel_e4s:9.2::baseos | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-c++-debuginfo Red Hat:rhel_e4s:9.2::baseos | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-dane-debuginfo Red Hat:rhel_e4s:9.2::baseos | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-debuginfo Red Hat:rhel_e4s:9.2::baseos | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-debugsource Red Hat:rhel_e4s:9.2::baseos | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-utils-debuginfo Red Hat:rhel_e4s:9.2::baseos | All versions | 0:3.7.6-21.el9_2.5 |
gnutls-c++ Red Hat:rhel_eus:9.4::appstream | All versions | 0:3.8.3-4.el9_4.5 |
gnutls-c++-debuginfo Red Hat:rhel_eus:9.4::appstream | All versions | 0:3.8.3-4.el9_4.5 |
gnutls-dane Red Hat:rhel_eus:9.4::appstream | All versions | 0:3.8.3-4.el9_4.5 |
gnutls-dane-debuginfo Red Hat:rhel_eus:9.4::appstream | All versions | 0:3.8.3-4.el9_4.5 |
gnutls-debuginfo Red Hat:rhel_eus:9.4::appstream | All versions | 0:3.8.3-4.el9_4.5 |
gnutls-debugsource Red Hat:rhel_eus:9.4::appstream | All versions | 0:3.8.3-4.el9_4.5 |
gnutls-devel Red Hat:rhel_eus:9.4::appstream | All versions | 0:3.8.3-4.el9_4.5 |
gnutls-utils Red Hat:rhel_eus:9.4::appstream | All versions | 0:3.8.3-4.el9_4.5 |
gnutls-utils-debuginfo Red Hat:rhel_eus:9.4::appstream | All versions | 0:3.8.3-4.el9_4.5 |
gnutls Red Hat:rhel_eus:9.4::baseos | All versions | 0:3.8.3-4.el9_4.5 |
gnutls-c++-debuginfo Red Hat:rhel_eus:9.4::baseos | All versions | 0:3.8.3-4.el9_4.5 |
gnutls-dane-debuginfo Red Hat:rhel_eus:9.4::baseos | All versions | 0:3.8.3-4.el9_4.5 |
gnutls-debuginfo Red Hat:rhel_eus:9.4::baseos | All versions | 0:3.8.3-4.el9_4.5 |
gnutls-debugsource Red Hat:rhel_eus:9.4::baseos | All versions | 0:3.8.3-4.el9_4.5 |
How do I fix CVE-2025-14831?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-14831 being exploited?
There is no known exploitation of CVE-2025-14831 in the wild and no public exploit code.
Sources
Also known as ALPINE-CVE-2025-14831, BELL-CVE-2025-14831, DEBIAN-CVE-2025-14831, DSA-6140-1, ECHO-56a4-40ae-0680, GHSA-pm8w-jq9r-x5rp and 12 more.