CVE catalog
CVE-2026-1757
libxml2: CVE-2026-1757
- Severity
- Medium · CVSS 6.2
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.22% · Oct 25, 2026
A flaw was identified in the interactive shell of the xmllint utility, part of the libxml2 project, where memory allocated for user input is not properly released under certain conditions. When a user submits input consisting only of whitespace, the program skips command execution but fails to free the allocated buffer. Repeating this action causes memory to continuously accumulate. Over time, this can exhaust system memory and terminate the xmllint process, creating a denial-of-service condition on the local system.
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 | 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 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0.2ubuntu0.2 | fixed |
| Ubuntu | libxml2 | 26.04 | 2.14.5+dfsg-0.2 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.14.5+dfsg-0.2build1 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.1+dfsg-0.3 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.1+dfsg-0.4 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.1+dfsg-1 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.1+dfsg-2 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.1+dfsg-2ubuntu1 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.1+dfsg-2ubuntu2 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.2+dfsg-0.1 | vulnerable |
| Ubuntu | libxml2 | 26.04 | 2.15.2+dfsg-0.1ubuntu0.1 | 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 | vulnerable |
| Ubuntu | libxml2 | 25.10 | 2.14.5+dfsg-0.2ubuntu0.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libxml2 | source | sid | 2.15.2+dfsg-0.1 | unimportant | Not reported | Not reported |
| Debian | libxml2 | source | forky | 2.15.2+dfsg-0.1 | unimportant | Not reported | Not reported |
| Debian | libxml2 | source | trixie | 2.12.7+dfsg+really2.9.14-2.1+deb13u3 | not yet assigned | Not reported | Not reported |
| Debian | libxml2 | source | bookworm | 2.9.14+dfsg-1.3~deb12u6 | not yet assigned | Not reported | Not reported |
| Ubuntu | libxml2 | deb | 25.10 | 2.14.5+dfsg-0.2ubuntu0.2 | Not reported | USN-8460-1 | Not reported |
| Ubuntu | libxml2 | deb | 26.04 | 2.15.2+dfsg-0.1ubuntu0.1 | Not reported | USN-8460-1 | Not reported |
| Ubuntu | libxml2 | deb | 25.10 | 2.14.5+dfsg-0.2ubuntu0.2 | Not reported | UBUNTU-CVE-2026-1757 | 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~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · 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~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · 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~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u6· all · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· all · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· all · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · 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~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · 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~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormFixed · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · libxml2 · debian · 12
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityAffected · Fixed:
2.9.14+dfsg-1.3~deb12u6dsa · libxml2 · debian · bookworm; dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · 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+deb13u3dsa · libxml2 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-1757]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-1757]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-1757]
- [https://osv.dev/vulnerability/USN-8460-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-1757]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1757.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0284.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]