Description
An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7. Formatting error messages with xmllint --htmlout can result in a buffer over-read in xmlHTMLPrintFileContext in xmllint.c.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libxml2 | 2.12.7+dfsg+really2.9.14-0.4 | — |
| Debian 13 | libxml2 | 2.12.7+dfsg+really2.9.14-0.4 | — |
| Debian 12 | libxml2 | 2.9.14+dfsg-1.3~deb12u2 | DSA-5949-1 |
| Debian 11 | libxml2 | 2.9.10+dfsg-6.7+deb11u8 | DLA-4251-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | libxml2 | 2.9.14+dfsg-1.3ubuntu3.1 | USN-7302-1, USN-7240-1 |
| Ubuntu 22.04 LTS | libxml2 | 2.9.13+dfsg-1ubuntu0.5 | USN-7302-1, USN-7240-1 |
| Ubuntu 20.04 LTS | libxml2 | 2.9.10+dfsg-5ubuntu0.20.04.8 | USN-7302-1, USN-7240-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | libxml2 | 2.9.4+dfsg1-6.1ubuntu1.9+esm2 | USN-7302-1 |
| Ubuntu Pro 16.04 LTS | libxml2 | 2.9.3+dfsg1-1ubuntu0.7+esm7 | USN-7302-1 |
| Ubuntu Pro 14.04 LTS | libxml2 | 2.9.1+dfsg1-3ubuntu4.13+esm7 | USN-7302-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | libxml2 +3 | 2.12.5-10.el10_2.1 | RHSA-2026:28234 |
| RHEL 9 | libxml2 +2 | 2.9.13-14.el9_8.1 | RHSA-2026:28254 |
| RHEL 8 | libxml2 +2 | 2.9.7-21.el8_10.5 | RHSA-2026:26354 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | libxml2 +3 | 2.12.5-9.el10_0.1 | RHSA-2026:33635 |
| RHEL 9.6 EUS | libxml2 +2 | 2.9.13-12.el9_6.2 | RHSA-2026:33634 |
| RHEL 9.4 E4S | libxml2 +2 | 2.9.13-13.el9_4.1 | RHSA-2026:33632 |
| RHEL 9.2 E4S | libxml2 +2 | 2.9.13-3.el9_2.11 | RHSA-2026:33633 |
| RHEL 8.8 TUS | libxml2 +2 | 2.9.7-16.el8_8.14 | RHSA-2026:27739 |
| RHEL 8.8 E4S | libxml2 +2 | 2.9.7-16.el8_8.14 | RHSA-2026:27739 |
| RHEL 8.6 EUS Long Life | libxml2 +2 | 2.9.7-13.el8_6.14 | RHSA-2026:27737 |
| RHEL 8.6 AUS | libxml2 +2 | 2.9.7-13.el8_6.14 | RHSA-2026:27737 |
| RHEL 8.4 EUS Long Life | libxml2 +2 | 2.9.7-9.el8_4.10 | RHSA-2026:27736 |
| RHEL 8.4 AUS | libxml2 +2 | 2.9.7-9.el8_4.10 | RHSA-2026:27736 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | libxml2 +3 | 2.12.5-10.el10_2.1 | ALSA-2026:28234 |
| AlmaLinux 9 | libxml2 +2 | 2.9.13-14.el9_8.1 | ALSA-2026:28254 |
| AlmaLinux 8 | libxml2 +2 | 2.9.7-21.el8_10.5 | ALSA-2026:26354 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | libxml2 | 2.12.5-10.el10_2.1 | RLSA-2026:28234 |
| Rocky Linux 9 | libxml2 | 2.9.13-14.el9_8.1 | RLSA-2026:28254 |
| Rocky Linux 8 | libxml2 | 2.9.7-21.el8_10.5 | RLSA-2026:26354 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | libxml2 +1 | 2.10.3-150500.5.17.1 | SUSE-SU-2024:2290-1 |
| SLES 15 SP5 | libxml2 +1 | 2.10.3-150500.5.17.1 | SUSE-SU-2024:2290-1 |
| SLES 12 SP5 | libxml2 +1 | 2.9.4-46.75.1 | SUSE-SU-2024:2288-1 |
| SLES 3 | libxml2-python | 2.10.3-150500.5.17.1 | SUSE-SU-2024:2290-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | libxml2 +1 | 2.9.4-46.75.1 | SUSE-SU-2024:2288-1 |
| SLE Micro 6.0 | libxml2 | 2.11.6-3.1 | SUSE-SU-2025:20043-1 |
| SLE Micro 5.5 | libxml2 +1 | 2.10.3-150500.5.17.1 | SUSE-SU-2024:2290-1 |
| SLE Micro 5.4 | libxml2 +1 | 2.9.14-150400.5.32.1 | SUSE-SU-2024:2279-1 |
| SLE Micro 5.3 | libxml2 +1 | 2.9.14-150400.5.32.1 | SUSE-SU-2024:2279-1 |
| SLE Micro 5.2 | libxml2 +1 | 2.9.7-150000.3.70.1 | SUSE-SU-2024:2267-1 |
| SLE Micro 5.1 | libxml2 | 2.9.7-150000.3.70.1 | SUSE-SU-2024:2267-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libxml2 | 2.12.7-1.1 | openSUSE-SU-2024:13971-1 |
| openSUSE Leap 15.6 | libxml2 +1 | 2.10.3-150500.5.17.1 | SUSE-SU-2024:2290-1 |
| openSUSE Leap 15.6 | python-libxml2-python | 2.9.7-150000.3.70.1 | SUSE-SU-2024:2267-1 |
| openSUSE Leap 15.5 | libxml2 +1 | 2.10.3-150500.5.17.1 | SUSE-SU-2024:2290-1 |
| openSUSE Leap 15.5 | python-libxml2-python | 2.9.7-150000.3.70.1 | SUSE-SU-2024:2267-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libxml2 | 2.12.7-r0 | — |
| Alpine v3.23 | libxml2 | 2.12.7-r0 | — |
| Alpine v3.22 | libxml2 | 2.12.7-r0 | — |
| Alpine v3.21 | libxml2 | 2.12.7-r0 | — |
| Alpine v3.20 | libxml2 | 2.12.7-r0 | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libxml2 | 2.11.8-r0 | — |
| Alpine v3.18 | libxml2 | 2.11.8-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | libxml2 +3 | 2.10.4-1.amzn2023.0.7 | ALAS2023-2024-783 |
| Amazon Linux 2 | libxml2 +3 | 2.9.1-6.amzn2.5.14 | ALAS2-2024-2717 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | libxml2 | 2.11.5-3 | — |
| Azure Linux 2 (CBL-Mariner) | libxml2 | 2.10.4-3 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | libxml2 +3 | 2.12.5-10.el10_2.2 | ELSA-2026-28234 |
| Oracle Linux 9 | libxml2 +2 | 2.9.13-14.el9_8.1 | ELSA-2026-28254 |
| Oracle Linux 8 | libxml2 +2 | 2.9.7-21.el8_10.5 | ELSA-2026-26354 |
Advisories 37
- ALSA-2026:28254 Low: libxml2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:28234 Low: libxml2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:26354 Low: libxml2 security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-2919 IBM App Connect Enterprise: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 27, 2026
- RHSA-2026:33635 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:33634 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:33632 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:33633 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:28254 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:28234 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:27739 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:27736 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:27737 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:26354 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- WID-SEC-2024-1159 libxml2: Schwachstelle ermöglicht Offenlegung von Informationen BSI CERT-Bund (WID) · Oct 14, 2026
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- WID-SEC-2026-1687 IBM License Metric Tool: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Sep 1, 2026
- ELSA-2026-28234 Low: libxml2 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 21, 2026
- USN-7302-1 libxml2 vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- RLSA-2026:28254 Low: libxml2 security update Rocky Linux Security Advisories · Jun 24, 2026
- RLSA-2026:28234 Low: libxml2 security update Rocky Linux Security Advisories · Jun 24, 2026
- ELSA-2026-28254 Low: libxml2 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 23, 2026
- RLSA-2026:26354 Low: libxml2 security update Rocky Linux Security Advisories · Jun 17, 2026
- ELSA-2026-26354 Low: libxml2 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 16, 2026
- USN-7240-1 libxml2 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2025:20043-1 Security update for libxml2 SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-4251-1 libxml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5949-1 libxml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2024:2267-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13971-1 libxml2-2-2.12.7-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2290-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2279-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2288-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-0225 Dell PowerProtect Data Domain: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 1, 2025
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- ALAS2-2024-2717 Moderate: libxml2 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Dec 19, 2024
- ALAS2023-2024-783 Moderate: libxml2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Dec 16, 2024