CVE catalog
CVE-2026-0990
libxml2 vulnerabilities
- Severity
- Medium · CVSS 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.95% · Oct 25, 2026
A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references itself. A remote attacker could exploit this configuration-dependent issue by providing a specially crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a segmentation fault, causing a Denial of Service (DoS) by crashing affected applications.
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 | libxml2 | sid | 2.15.4+dfsg-1 | fixed |
| Debian | libxml2 | forky | 2.15.4+dfsg-1 | fixed |
| Debian | libxml2 | trixie | 2.12.7+dfsg+really2.9.14-2.1+deb13u3 | fixed |
| Debian | libxml2 | trixie-security | 2.12.7+dfsg+really2.9.14-2.1+deb13u1 | vulnerable |
| Debian | libxml2 | bookworm | 2.9.14+dfsg-1.3~deb12u6 | fixed |
| Debian | libxml2 | bookworm-security | 2.9.14+dfsg-1.3~deb12u4 | vulnerable |
| Ubuntu | libxml2 | noble | 2.9.14+dfsg-1.3~deb12u6 | fixed |
| Ubuntu | libxml2 | noble | 2.9.14+dfsg-1.3ubuntu3.7 | fixed |
| Ubuntu | libxml2-dev | noble | 2.9.14+dfsg-1.3ubuntu3.7 | fixed |
| Ubuntu | libxml2-doc | noble | 2.9.14+dfsg-1.3ubuntu3.7 | fixed |
| Ubuntu | libxml2-utils | noble | 2.9.14+dfsg-1.3ubuntu3.7 | fixed |
| Ubuntu | python3-libxml2 | noble | 2.9.14+dfsg-1.3ubuntu3.7 | fixed |
| Cpe | hardened_images | Not reported | Not reported | unknown |
| Cpe | jboss_core_services | Not reported | Not reported | unknown |
| Cpe | openshift_container_platform | Not reported | Not reported | unknown |
| Cpe | enterprise_linux | Not reported | Not reported | unknown |
| Cpe | vios | Not reported | Not reported | unknown |
| Cpe | aix | Not reported | Not reported | unknown |
| Cpe | libxml2 | Not reported | 2.15.2 | fixed |
| Ubuntu | libxml2 | pro | 2.9.4+dfsg1-7ubuntu3 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.4+dfsg1-7ubuntu5 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.4+dfsg1-8ubuntu1 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.4+dfsg1-8ubuntu2 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.4+dfsg1-8ubuntu3 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-1ubuntu3 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-4build1 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.1 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.2 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.3 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.4 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.5 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.6 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.7 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.8 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.9 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.10 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.10+esm1 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.10+esm2 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.10+esm3 | vulnerable |
| Ubuntu | libxml2 | pro | 2.9.10+dfsg-5ubuntu0.20.04.10+esm4 | fixed |
| Ubuntu | libxml2 | 22.04 | 2.9.12+dfsg-4 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.12+dfsg-5 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.12+dfsg-6 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1build1 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1ubuntu0.1 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1ubuntu0.2 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1ubuntu0.3 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1ubuntu0.4 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1ubuntu0.5 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1ubuntu0.6 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1ubuntu0.7 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1ubuntu0.8 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1ubuntu0.9 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1ubuntu0.10 | vulnerable |
| Ubuntu | libxml2 | 22.04 | 2.9.13+dfsg-1ubuntu0.11 | fixed |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3build1 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3build2 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3build3 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3ubuntu1 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3ubuntu2 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3ubuntu3 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3ubuntu3.1 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3ubuntu3.2 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3ubuntu3.3 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3ubuntu3.4 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3ubuntu3.5 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3ubuntu3.6 | vulnerable |
| Ubuntu | libxml2 | 24.04 | 2.9.14+dfsg-1.3ubuntu3.7 | fixed |
| Ubuntu | libxml2 | 25.10 | 2.12.7+dfsg+really2.9.14-0.4 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.12.7+dfsg+really2.9.14-0.4ubuntu0.1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.12.7+dfsg+really2.9.14-1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.3+dfsg-0exp1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.3+dfsg-0exp2 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.3+dfsg-0exp3 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.4+dfsg-0exp1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0exp1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0exp2 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0.1 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0.2 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0.2ubuntu0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libxml2 | source | sid | 2.15.2+dfsg-0.1 | not yet assigned | Not reported | [1125695] |
| Debian | libxml2 | source | forky | 2.15.2+dfsg-0.1 | not yet assigned | Not reported | [1125695] |
| Debian | libxml2 | source | trixie | 2.12.7+dfsg+really2.9.14-2.1+deb13u3 | not yet assigned | Not reported | [1125695] |
| Debian | libxml2 | source | bookworm | 2.9.14+dfsg-1.3~deb12u6 | not yet assigned | Not reported | [1125695] |
| Ubuntu | libxml2 | deb | noble | 2.9.14+dfsg-1.3~deb12u6 | Not reported | Not reported | Not reported |
| Ubuntu | libxml2 | deb | noble | 2.9.14+dfsg-1.3ubuntu3.7 | Not reported | Not reported | Not reported |
| Ubuntu | libxml2-dev | deb | noble | 2.9.14+dfsg-1.3ubuntu3.7 | Not reported | Not reported | Not reported |
| Ubuntu | libxml2-doc | deb | noble | 2.9.14+dfsg-1.3ubuntu3.7 | Not reported | Not reported | Not reported |
| Ubuntu | libxml2-utils | deb | noble | 2.9.14+dfsg-1.3ubuntu3.7 | Not reported | Not reported | Not reported |
| Ubuntu | python3-libxml2 | deb | noble | 2.9.14+dfsg-1.3ubuntu3.7 | Not reported | Not reported | Not reported |
| Cpe | libxml2 | cpe | Not reported | 2.15.2 | Not reported | NVD-CVE-2026-0990 | Not reported |
| Ubuntu | libxml2 | deb | pro | 2.9.10+dfsg-5ubuntu0.20.04.10+esm4 | Not reported | UBUNTU-CVE-2026-0990 | Not reported |
| Ubuntu | libxml2 | deb | 22.04 | 2.9.13+dfsg-1ubuntu0.11 | Not reported | UBUNTU-CVE-2026-0990 | Not reported |
| Ubuntu | libxml2 | deb | 24.04 | 2.9.14+dfsg-1.3ubuntu3.7 | Not reported | UBUNTU-CVE-2026-0990 | Not reported |
| Ubuntu | libxml2 | deb | 25.10 | 2.14.5+dfsg-0.2ubuntu0.1 | Not reported | UBUNTU-CVE-2026-0990 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libxml2]Affected
Details (4)
2.9.14+dfsg-1.3~deb12u6· amd64 · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
- [libxml2-dev]Affected
Source package: [libxml2]
Details (4)
2.9.14+dfsg-1.3~deb12u6· amd64 · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
- [libxml2-doc]Affected
Source package: [libxml2]
Details (4)
2.9.14+dfsg-1.3~deb12u6· all · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u6· all · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· all · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· all · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
- [libxml2-utils]Affected
Source package: [libxml2]
Details (4)
2.9.14+dfsg-1.3~deb12u6· amd64 · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
- [python3-libxml2]Affected
Source package: [libxml2]
Details (4)
2.9.14+dfsg-1.3~deb12u6· amd64 · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6usn · libxml2 · debian · bookworm; usn · libxml2 · debian · 12
[Debian 13 (Trixie)]
- [libxml2]Affected
Details (4)
2.12.7+dfsg+really2.9.14-2.1+deb13u3· amd64 · trixieFixed · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u3· arm64 · trixieFixed · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u1· amd64 · trixie-securityAffected · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u1· arm64 · trixie-securityAffected · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
- [libxml2-dev]Affected
Source package: [libxml2]
Details (4)
2.12.7+dfsg+really2.9.14-2.1+deb13u3· amd64 · trixieFixed · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u3· arm64 · trixieFixed · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u1· amd64 · trixie-securityAffected · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u1· arm64 · trixie-securityAffected · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
- [libxml2-doc]Affected
Source package: [libxml2]
Details (4)
2.12.7+dfsg+really2.9.14-2.1+deb13u3· all · trixieFixed · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u3· all · trixieFixed · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u1· all · trixie-securityAffected · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u1· all · trixie-securityAffected · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
- [libxml2-utils]Affected
Source package: [libxml2]
Details (4)
2.12.7+dfsg+really2.9.14-2.1+deb13u3· amd64 · trixieFixed · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u3· arm64 · trixieFixed · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u1· amd64 · trixie-securityAffected · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u1· arm64 · trixie-securityAffected · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
- [python3-libxml2]Affected
Source package: [libxml2]
Details (4)
2.12.7+dfsg+really2.9.14-2.1+deb13u3· amd64 · trixieFixed · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u3· arm64 · trixieFixed · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u1· amd64 · trixie-securityAffected · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
2.12.7+dfsg+really2.9.14-2.1+deb13u1· arm64 · trixie-securityAffected · Fixed:
2.12.7+dfsg+really2.9.14-2.1+deb13u3usn · libxml2 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-0990]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-0990]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-0990]
- [https://security-tracker.debian.org/tracker/CVE-2026-0990]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0990.json]
- [https://ubuntu.com/security/notices/USN-7974-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0126.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] · [Ubuntu Security Notices (USN)]