Description
In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| xmlsoft | libxml2 | < 2.15.4 | 2.15.4 |
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 | libxml2 | 2.15.4+dfsg-1 | — |
| Debian 13 | libxml2 | No fix yet | — |
| Debian 12 | libxml2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | libxml2 | 2.15.2+dfsg-0.1ubuntu0.3 | USN-8910-1 |
| Ubuntu 24.04 LTS | libxml2 | 2.9.14+dfsg-1.3ubuntu3.10 | USN-8910-1 |
| Ubuntu 22.04 LTS | libxml2 | 2.9.13+dfsg-1ubuntu0.14 | USN-8910-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | libxml2 | 2.9.10+dfsg-5ubuntu0.20.04.10+esm6 | USN-8910-1 |
| Ubuntu Pro 18.04 LTS | libxml2 | 2.9.4+dfsg1-6.1ubuntu1.9+esm9 | USN-8910-1 |
| Ubuntu Pro 16.04 LTS | libxml2 | 2.9.3+dfsg1-1ubuntu0.7+esm14 | USN-8910-1 |
| Ubuntu Pro 14.04 LTS | libxml2 | 2.9.1+dfsg1-3ubuntu4.13+esm13 | USN-8910-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | libxml2 +3 | 2.12.5-10.el10_2.4 | RHSA-2026:98572, RHSA-2026:71586 |
| RHEL 9 | libxml2 +2 | 2.9.13-14.el9_8.5 | RHSA-2026:98468, RHSA-2026:71585 |
| RHEL 8 | libxml2 +2 | 2.9.7-21.el8_10.9 | RHSA-2026:71641 |
Show 12 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_0.9 | RHSA-2026:89759 |
| RHEL 9.6 EUS | libxml2 +2 | 2.9.13-13.el9_6 | RHSA-2026:90309 |
| RHEL 9.4 E4S | libxml2 +2 | 2.9.13-13.el9_4.10 | RHSA-2026:89750 |
| RHEL 9.2 E4S | libxml2 +2 | 2.9.13-3.el9_2.20 | RHSA-2026:92352 |
| RHEL 8.8 TUS | libxml2 +2 | 2.9.7-16.el8_8.24 | RHSA-2026:93463 |
| RHEL 8.8 E4S | libxml2 +2 | 2.9.7-16.el8_8.24 | RHSA-2026:93463 |
| RHEL 8.6 EUS Long Life | libxml2 +2 | 2.9.7-13.el8_6.24 | RHSA-2026:92589 |
| RHEL 8.6 AUS | libxml2 +2 | 2.9.7-13.el8_6.24 | RHSA-2026:92589 |
| RHEL 8.4 EUS Long Life | libxml2 +2 | 2.9.7-9.el8_4.20 | RHSA-2026:93473 |
| RHEL 8.4 AUS | libxml2 +2 | 2.9.7-9.el8_4.20 | RHSA-2026:93473 |
| RHEL 7 ELS | libxml2 +3 | 2.9.1-6.el7_9.20 | RHSA-2026:93791 |
| Red Hat Hardened Images 1 | libxml2 +4 | 2.15.4-0.1.hum1 | RHSA-2026:64463 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | libxml2 +3 | 2.12.5-10.el10_2.4 | ALSA-2026:71586 |
| AlmaLinux 9 | libxml2 +2 | 2.9.13-14.el9_8.5 | ALSA-2026:71585 |
| AlmaLinux 8 | libxml2 +2 | 2.9.7-21.el8_10.9 | ALSA-2026:71641 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | libxml2 | 2.12.5-10.el10_2.4 | RLSA-2026:98572, RLSA-2026:71586 |
| Rocky Linux 10 | libxml2-devel +2 | 2.12.5-15.el10_3.2 | RLSA-2026:98572 |
| Rocky Linux 9 | libxml2 | 2.9.13-14.el9_8.5 | RLSA-2026:98468, RLSA-2026:71585 |
| Rocky Linux 9 | libxml2-devel +1 | 2.9.13-18.el9_9.1 | RLSA-2026:98468 |
| Rocky Linux 8 | libxml2 | 2.9.7-21.el8_10.9 | RLSA-2026:71641 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | libxml2 +3 | 2.10.4-1.amzn2023.0.21 | ALAS2023-2026-3122 |
| Amazon Linux 2 | libxml2 +3 | 2.9.1-6.amzn2.5.27 | ALAS2-2026-3940 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | libxml2 | 2.11.5-11 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | libxml2 +3 | 2.12.5-10.el10_2.4 | ELSA-2026-71586 |
| Oracle Linux 9 | libxml2 +2 | 2.9.13-14.el9_8.5 | ELSA-2026-71585 |
| Oracle Linux 8 | libxml2 +2 | 2.9.7-21.el8_10.9 | ELSA-2026-71641 |
Advisories 30
- RHSA-2026:93473 Red Hat Security Advisory: libxml2 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:92589 Red Hat Security Advisory: libxml2 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:98468 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:89750 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:90309 Red Hat Security Advisory: libxml2 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:93463 Red Hat Security Advisory: libxml2 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:92352 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:98572 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:93791 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:89759 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RLSA-2026:98572 Important: libxml2 security update Rocky Linux Security Advisories · Nov 13, 2026
- RLSA-2026:98468 Important: libxml2 security update Rocky Linux Security Advisories · Nov 13, 2026
- WID-SEC-2026-3195 libxml2: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- ALSA-2026:71585 Important: libxml2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:71586 Important: libxml2 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:71641 Important: libxml2 security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:71641 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:71586 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:71585 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:64463 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- WID-SEC-2026-3642 Meinberg LANTIME: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 14, 2026
- USN-8910-1 libxml2 vulnerabilities Ubuntu Security Notices (USN) · Oct 9, 2026
- ALAS2023-2026-3122 Moderate: libxml2 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 28, 2026
- ALAS2-2026-3940 Moderate: libxml2 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 28, 2026
- RLSA-2026:71641 Important: libxml2 security update Rocky Linux Security Advisories · Sep 26, 2026
- RLSA-2026:71585 Important: libxml2 security update Rocky Linux Security Advisories · Sep 25, 2026
- RLSA-2026:71586 Important: libxml2 security update Rocky Linux Security Advisories · Sep 25, 2026
- ELSA-2026-71586 Important: libxml2 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Sep 25, 2026
- ELSA-2026-71641 Important: libxml2 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 25, 2026
- ELSA-2026-71585 Important: libxml2 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 24, 2026