Description
A use-after-free vulnerability was found in libxslt while parsing xsl nodes that may lead to the dereference of expired pointers and application crash.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | libxslt | ≤ 1.1.43 | — |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — | — |
| Red Hat | Red Hat Discovery 2 | — | — |
| Red Hat | Red Hat Hardened Images | — | — |
| Red Hat | Red Hat OpenShift AI 3.4 | — | — |
| Red Hat | Red Hat Update Infrastructure 5 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
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 | libxslt | 1.1.43-0.3 | — |
| Debian 13 | libxslt | No fix yet | — |
| Debian 12 | libxslt | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | libxslt | 1.1.43-0.3 | — |
| Ubuntu 25.10 | libxslt | No fix yet | — |
| Ubuntu 24.04 LTS | libxslt | No fix yet | — |
| Ubuntu 22.04 LTS | libxslt | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | libxslt | No fix yet | — |
| Ubuntu Pro 18.04 LTS | libxslt | No fix yet | — |
| Ubuntu Pro 16.04 LTS | libxslt | No fix yet | — |
| Ubuntu Pro 14.04 LTS | libxslt | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | libxslt +1 | 1.1.39-8.el10_2.1 | RHSA-2026:28584 |
| RHEL 9 | libxslt +1 | 1.1.34-14.el9_8.1 | RHSA-2026:28243 |
| RHEL 8 | libxslt +1 | 1.1.32-6.4.el8_10 | RHSA-2026:26355 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | libxslt +1 | 1.1.39-8.el10_0.1 | RHSA-2026:29809 |
| RHEL 9.6 EUS | libxslt +1 | 1.1.34-13.el9_6.2 | RHSA-2026:29807 |
| RHEL 9.4 E4S | libxslt +1 | 1.1.34-15.el9_4 | RHSA-2026:29814 |
| RHEL 9.2 E4S | libxslt +1 | 1.1.34-12.el9_2 | RHSA-2026:29811 |
| RHEL 8.8 TUS | libxslt +1 | 1.1.32-8.el8_8.1 | RHSA-2026:29976 |
| RHEL 8.8 E4S | libxslt +1 | 1.1.32-8.el8_8.1 | RHSA-2026:29976 |
| RHEL 8.6 EUS Long Life | libxslt +1 | 1.1.32-8.el8_6.1 | RHSA-2026:30847 |
| RHEL 8.6 AUS | libxslt +1 | 1.1.32-8.el8_6.1 | RHSA-2026:30847 |
| RHEL 8.4 EUS Long Life | libxslt +1 | 1.1.32-8.el8_4.1 | RHSA-2026:29975 |
| RHEL 8.4 AUS | libxslt +1 | 1.1.32-8.el8_4.1 | RHSA-2026:29975 |
| Red Hat Hardened Images 1 | libxslt +2 | 1.1.45-0.1.hum1 | RHSA-2026:11015 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | libxslt +1 | 1.1.39-8.el10_2.1 | ALSA-2026:28584 |
| AlmaLinux 9 | libxslt +1 | 1.1.34-14.el9_8.1 | ALSA-2026:28243 |
| AlmaLinux 8 | libxslt +1 | 1.1.32-6.4.el8_10 | ALSA-2026:26355 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | libxslt | 1.1.39-8.el10_2.1 | RLSA-2026:28584 |
| Rocky Linux 9 | libxslt | 1.1.34-14.el9_7.1 | RLSA-2026:28243 |
| Rocky Linux 8 | libxslt | 1.1.32-6.4.el8_10 | RLSA-2026:26355 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | libxml2 +1 | 2.12.10-150700.4.11.1 | SUSE-SU-2026:0605-1 |
| SLES 15 SP7 | libxslt | 1.1.34-150400.3.13.1 | SUSE-SU-2026:0801-1, SUSE-SU-2025:3875-1 |
| SLES 15 SP6 | libxslt | 1.1.34-150400.3.13.1 | SUSE-SU-2025:3875-1 |
| SLES 15 SP5 | libxslt | 1.1.34-150400.3.13.1 | SUSE-SU-2026:0603-1 |
| SLES 15 SP4 | libxslt | 1.1.34-150400.3.13.1 | SUSE-SU-2026:0603-1 |
| SLES 12 SP5 | libxml2 +1 | 2.9.4-46.99.1 | SUSE-SU-2026:0782-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 3 | libxml2-python | 2.12.10-150700.4.11.1 | SUSE-SU-2026:0605-1 |
| SLES for SAP 16.0 | libxml2 +1 | 2.13.8-160000.4.1 | SUSE-SU-2026:20631-1 |
| SLES for SAP 16.0 | libxslt | 1.1.43-160000.3.1 | SUSE-SU-2026:20631-1, SUSE-SU-2025:21008-1 |
| SLES for SAP 15 SP5 | libxslt | 1.1.34-150400.3.13.1 | SUSE-SU-2026:0603-1 |
| SLES for SAP 15 SP4 | libxslt | 1.1.34-150400.3.13.1 | SUSE-SU-2026:0603-1 |
| SLES 16.0 | libxml2 +1 | 2.13.8-160000.4.1 | SUSE-SU-2026:20631-1 |
| SLES 16.0 | libxslt | 1.1.43-160000.3.1 | SUSE-SU-2026:20631-1, SUSE-SU-2025:21008-1 |
| SLE Micro 6.2 | libxml2 +1 | 2.13.8-160000.4.1 | SUSE-SU-2026:20647-1 |
| SLE Micro 6.2 | libxslt | 1.1.43-160000.3.1 | SUSE-SU-2026:20647-1, SUSE-SU-2025:21031-1 |
| SLE Micro 6.1 | libxml2 +1 | 2.11.6-slfo.1.1_8.1 | SUSE-SU-2026:20657-1 |
| SLE Micro 6.1 | libxslt | 1.1.38-slfo.1.1_5.1 | SUSE-SU-2026:20657-1, SUSE-SU-2025:20897-1 |
| SLE Micro 6.0 | libxml2 +1 | 2.11.6-12.1 | SUSE-SU-2026:20707-1 |
| SLE Micro 6.0 | libxslt | 1.1.38-7.1 | SUSE-SU-2026:20707-1, SUSE-SU-2025:20892-1 |
| SLE Micro 5.5 | libxml2 +1 | 2.10.3-150500.5.38.1 | SUSE-SU-2026:0570-1 |
| SLE Micro 5.5 | libxslt | 1.1.34-150400.3.13.1 | SUSE-SU-2026:0801-1, SUSE-SU-2025:3875-1 |
| SLE Micro 5.4 | libxml2 +1 | 2.9.14-150400.5.55.1 | SUSE-SU-2026:0606-1 |
| SLE Micro 5.4 | libxslt | 1.1.34-150400.3.13.1 | SUSE-SU-2026:0801-1, SUSE-SU-2025:3875-1 |
| SLE Micro 5.3 | libxml2 +1 | 2.9.14-150400.5.55.1 | SUSE-SU-2026:0606-1 |
| SLE Micro 5.3 | libxslt | 1.1.34-150400.3.13.1 | SUSE-SU-2026:0801-1, SUSE-SU-2025:3875-1 |
| SLE Micro 5.2 | libxml2 +1 | 2.9.7-150000.3.94.1 | SUSE-SU-2026:0568-1 |
| SLE Micro 5.2 | libxslt | 1.1.32-150000.3.20.1 | SUSE-SU-2025:03595-1, SUSE-SU-2025:03491-1 |
| SLE Micro 5.1 | libxslt | 1.1.32-150000.3.20.1 | SUSE-SU-2025:03595-1, SUSE-SU-2025:03491-1 |
| SLE HPC 15 SP5 | libxslt | 1.1.34-150400.3.13.1 | SUSE-SU-2026:0603-1 |
| SLE HPC 15 SP4 | libxslt | 1.1.34-150400.3.13.1 | SUSE-SU-2026:0603-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libxml2 | 2.14.5-3.1 | openSUSE-SU-2026:10167-1 |
| openSUSE Tumbleweed | libxslt | 1.1.43-3.1 | openSUSE-SU-2025:15611-1 |
| openSUSE Leap 16.0 | libxml2 +1 | 2.13.8-160000.4.1 | openSUSE-SU-2026:20312-1 |
| openSUSE Leap 16.0 | libxslt | 1.1.43-160000.3.1 | openSUSE-SU-2026:20312-1, openSUSE-SU-2025:20050-1 |
| openSUSE Leap 15.6 | libxml2 +1 | 2.10.3-150500.5.38.1 | SUSE-SU-2026:0570-1 |
| openSUSE Leap 15.6 | libxslt | 1.1.34-150400.3.13.1 | SUSE-SU-2026:0801-1, SUSE-SU-2025:3875-1 |
| openSUSE Leap 15.6 | libxslt-python | 1.1.32-150000.3.20.1 | SUSE-SU-2025:03595-1, SUSE-SU-2025:03491-1 |
| openSUSE Leap 15.6 | python-libxml2-python | 2.9.7-150000.3.94.1 | SUSE-SU-2026:0568-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libxslt | 1.1.43-r4 | — |
| Alpine v3.23 | libxslt | 1.1.43-r4 | — |
| Alpine v3.22 | libxslt | 1.1.43-r4 | — |
| Alpine v3.21 | libxslt | 1.1.42-r3 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | libxslt +2 | 1.1.43-1.amzn2023.0.3 | ALAS2023-2025-1228 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | libxslt | No fix yet | — |
| Azure Linux 2 (CBL-Mariner) | libxslt | No fix yet | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | libxslt +1 | 1.1.39-8.el10_2.1 | ELSA-2026-28584 |
| Oracle Linux 9 | libxslt +1 | 1.1.34-14.0.1.el9_8.1 | ELSA-2026-28243 |
| Oracle Linux 8 | libxslt +1 | 1.1.32-6.4.0.1.el8_10 | ELSA-2026-26355 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | libxslt +3 | 1.1.45-r7 | — |
Advisories 46
- RHSA-2026:26355 Red Hat Security Advisory: libxslt security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- WID-SEC-2026-1287 Red Hat Hardened Images RPMs (libxslt): Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Nov 10, 2026
- ALSA-2026:28243 Moderate: libxslt security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:28584 Moderate: libxslt security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:26355 Moderate: libxslt 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-2026:29811 Red Hat Security Advisory: libxslt security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2026:11015 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2026:30847 Red Hat Security Advisory: libxslt security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:29976 Red Hat Security Advisory: libxslt security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:29975 Red Hat Security Advisory: libxslt security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:29814 Red Hat Security Advisory: libxslt security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:29809 Red Hat Security Advisory: libxslt security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:29807 Red Hat Security Advisory: libxslt security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:28584 Red Hat Security Advisory: libxslt security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- RHSA-2026:28243 Red Hat Security Advisory: libxslt security update Red Hat Security Advisories (RHSA) · Oct 3, 2026
- ELSA-2026-28584 Moderate: libxslt security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 16, 2026
- RLSA-2026:28584 Moderate: libxslt security update Rocky Linux Security Advisories · Jun 25, 2026
- RLSA-2026:28243 Moderate: libxslt security update Rocky Linux Security Advisories · Jun 24, 2026
- ELSA-2026-28243 Moderate: libxslt security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 23, 2026
- RLSA-2026:26355 Moderate: libxslt security update Rocky Linux Security Advisories · Jun 17, 2026
- ELSA-2026-26355 Moderate: libxslt security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 16, 2026
- WID-SEC-2026-0778 Dell Secure Connect Gateway Policy Manager: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- openSUSE-SU-2026:10167-1 libxml2-16-2.14.5-3.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:20050-1 Security update for libxslt SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15611-1 libexslt0-1.1.43-3.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20707-1 Security update for libxslt, libxml2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20647-1 Security update for libxml2, libxslt SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20657-1 Security update for libxslt, libxml2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20631-1 Security update for libxml2, libxslt SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0603-1 Security update for libxslt SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0605-1 Security update for libxml2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0606-1 Security update for libxml2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0568-1 Security update for libxml2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:3875-1 Security update for libxslt SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21008-1 Security update for libxslt SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:03491-1 Security update for libxslt SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21031-1 Security update for libxslt SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20897-1 Security update for libxslt SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20892-1 Security update for libxslt SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2026:20312-1 Security update for libxml2, libxslt SUSE / openSUSE Security Updates · Mar 5, 2026
- SUSE-SU-2026:0801-1 Security update for libxslt SUSE / openSUSE Security Updates · Mar 5, 2026
- SUSE-SU-2026:0782-1 Security update for libxml2 SUSE / openSUSE Security Updates · Mar 4, 2026
- SUSE-SU-2026:0570-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 18, 2026
- SUSE-SU-2025:03595-1 Security update for libxslt SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2023-2025-1228 Moderate: libxslt security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 27, 2025
References
- RHSA-2026:11015 vendor-advisory
- RHSA-2026:26355 vendor-advisory
- RHSA-2026:28243 vendor-advisory
- RHSA-2026:28584 vendor-advisory
- RHSA-2026:29807 vendor-advisory
- RHSA-2026:29809 vendor-advisory
- RHSA-2026:29811 vendor-advisory
- RHSA-2026:29814 vendor-advisory
- RHSA-2026:29975 vendor-advisory
- RHSA-2026:29976 vendor-advisory
- RHSA-2026:30847 vendor-advisory
- RHSA-2026:33313 vendor-advisory
- RHSA-2026:44481 vendor-advisory
- RHSA-2026:58981 vendor-advisory
- RHSA-2026:74674 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2025-10911 vdb-entry
- RHBZ#2397838 issue-tracking
- https://gitlab.gnome.org/GNOME/libxslt/-/issues/144
- https://gitlab.gnome.org/GNOME/libxslt/-/merge_requests/77