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Fencer Vulns
high 7.8

CVE-2026-96889 json

Librsvg: use-after-free when xml includes have duplicated entities

published 2026-09-23 46 d ago modified 2026-11-05 4 d ago also EUVD-2026-85608 , GHSA-2464-fhr4-w9xw , GHSA-cpvr-w4j5-2mpg , RUSTSEC-2026-0305

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

A flaw was found in librsvg. When processing an SVG document containing nested XML inclusions (Xincludes) with duplicate entity declarations, a use-after-free error can occur. This vulnerability arises because the library incorrectly frees an XML entity that is still in use by the parser. An attacker could potentially exploit this to cause a denial of service or execute arbitrary code.

Patch / fix

  • npm next 15.5.28, 16.4.1
  • crates.io librsvg 2.57.5, 2.60.3, 2.61.5, 2.62.4, 2.63.2
  • Red Hat Red Hat Enterprise Linux 10 0:1.0.1-1.el10_2.2, 0:2.57.1-9.el10_2.10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.0.1-1.el10_0.1, 0:2.57.1-9.el10_0.1
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:2.40.20-1.el7_9.1
  • Red Hat Red Hat Enterprise Linux 8 0:2.42.7-6.el8_10
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.42.7-4.el8_4.1
  • Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:2.42.7-4.el8_4.1
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.42.7-4.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:2.42.7-4.el8_6.1
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:2.42.7-4.el8_8.1
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:2.42.7-4.el8_8.1
  • Red Hat Red Hat Enterprise Linux 9 0:2.50.7-3.el9_8.1
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:2.50.7-1.el9_2.2
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:2.50.7-3.el9_4.1
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:2.50.7-3.el9_6.1
  • Red Hat Red Hat OpenShift AI 3.0 1793327611, 1793328358, 1793329305, 1793329706, 1793329709
  • Red Hat Red Hat OpenShift AI 3.4 1793326217, 1793326796, 1793326837, 1793327311, 1793327499, 1793329011, 1793329624, 1793330096, 1793330461
  • Red Hat Red Hat OpenShift AI 3.5 1793326392, 1793326530, 1793327512, 1793327660, 1793328643, 1793329271, 1793329296, 1793330882, 1793330940
  • librsvg Debian 13 2.60.0+dfsg-1+deb13u1
  • librsvg Debian 14 2.63.2+dfsg-1

debian advisories DEBIAN-CVE-2026-96889

  • librsvg Ubuntu 24.04 LTS 2.58.0+dfsg-1ubuntu0.1
  • librsvg Ubuntu 26.04 LTS 2.61.3+dfsg-3ubuntu0.1

ubuntu advisories UBUNTU-CVE-2026-96889

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • librsvg Linux Micro 6.1 2.56.6-slfo.1.1_1.1
  • librsvg SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 2.60.3-160000.1.1

suse advisories SUSE-SU-2026:24557-1SUSE-SU-2026:24117-1SUSE-SU-2026:24202-1

  • librsvg openSUSE Tumbleweed 2.63.4-1.1
  • librsvg openSUSE Leap 16.0 2.60.3-160000.1.1

opensuse advisories openSUSE-SU-2026:12364-1openSUSE-SU-2026:22051-1

  • librsvg2 AlmaLinux 10 2.57.1-9.el10_2.10
  • librsvg2-tools AlmaLinux 10 2.57.1-9.el10_2.10
  • rsvg-pixbuf-loader AlmaLinux 10 2.57.1-9.el10_2.10
  • librsvg2 AlmaLinux 8 2.42.7-6.el8_10
  • librsvg2-tools AlmaLinux 8 2.42.7-6.el8_10
  • librsvg2 AlmaLinux 9 2.50.7-3.el9_8.1
  • librsvg2-tools AlmaLinux 9 2.50.7-3.el9_8.1
  • glycin-loaders AlmaLinux 10 1.0.1-1.el10_2.2

almalinux advisories ALSA-2026:86841ALSA-2026:86842ALSA-2026:86921ALSA-2026:86331

  • glycin-loaders Rocky Linux 10 1.0.1-1.el10_2.2
  • librsvg2 Rocky Linux 10 2.57.1-9.el10_2.10
  • librsvg2 Rocky Linux 9 2.50.7-3.el9_8.1
  • librsvg2 Rocky Linux 8 2.42.7-6.el8_10

rocky linux advisories RLSA-2026:86331RLSA-2026:86841RLSA-2026:86921RLSA-2026:86842

  • librsvg2 Azure Linux 3.0 2.58.1-9

azure linux advisories AZL-104931

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-96889 updated cvss 7.8

librsvg: Use-after-free when XML includes have duplicated entities

  • Red Hat Enterprise Linux 6 librsvg2
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-cuda-rhel9, rhelai3/bootc-rocm-rhel9, rhelai3/bootc-gaudi-rhel9, rhelai3/disk-image-cuda-rhel9 Red Hat OpenShift AI (RHOAI) rhoai/odh-feature-server-rhel9
    affected: workaround, no fix available
  • Red Hat Enterprise Linux AppStream (v. 8) librsvg2 2.42.7-6.el8_10, librsvg2-tools 2.42.7-6.el8_10
    fixed: vendor fix RHSA-2026:86842
  • Red Hat Enterprise Linux AppStream (v. 9) librsvg2 2.50.7-3.el9_8.1, librsvg2-tools 2.50.7-3.el9_8.1
    fixed: vendor fix RHSA-2026:86921
  • Red Hat Enterprise Linux AppStream (v. 10) librsvg2 2.57.1-9.el10_2.10, glycin-loaders 1.0.1-1.el10_2.2, librsvg2-tools 2.57.1-9.el10_2.10, rsvg-pixbuf-loader 2.57.1-9.el10_2.10
    fixed: vendor fix RHSA-2026:86331
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) librsvg2 2.42.7-4.el8_4.1, librsvg2-tools 2.42.7-4.el8_4.1
    fixed: vendor fix RHSA-2026:92353
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) librsvg2 2.42.7-4.el8_6.1, librsvg2-tools 2.42.7-4.el8_6.1
    fixed: vendor fix RHSA-2026:92336
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) librsvg2 2.42.7-4.el8_8.1, librsvg2-tools 2.42.7-4.el8_8.1
    fixed: vendor fix RHSA-2026:92382
show 11 more
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) librsvg2 2.50.7-1.el9_2.2, librsvg2-tools 2.50.7-1.el9_2.2
    fixed: vendor fix RHSA-2026:92213
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) librsvg2 2.50.7-3.el9_4.1, librsvg2-tools 2.50.7-3.el9_4.1
    fixed: vendor fix RHSA-2026:92218
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) librsvg2 2.57.1-9.el10_0.1, glycin-loaders 1.0.1-1.el10_0.1, librsvg2-tools 2.57.1-9.el10_0.1, rsvg-pixbuf-loader 2.57.1-9.el10_0.1
    fixed: vendor fix RHSA-2026:92573
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) librsvg2 2.50.7-3.el9_6.1, librsvg2-tools 2.50.7-3.el9_6.1
    fixed: vendor fix RHSA-2026:92212
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) librsvg2 2.42.7-4.el8_4.1, librsvg2-tools 2.42.7-4.el8_4.1
    fixed: vendor fix RHSA-2026:92353
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) librsvg2 2.42.7-4.el8_6.1, librsvg2-tools 2.42.7-4.el8_6.1
    fixed: vendor fix RHSA-2026:92336
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) librsvg2 2.42.7-4.el8_8.1, librsvg2-tools 2.42.7-4.el8_8.1
    fixed: vendor fix RHSA-2026:92382
  • Red Hat Enterprise Linux Server (v. 7 ELS) librsvg2 2.40.20-1.el7_9.1, librsvg2-tools 2.40.20-1.el7_9.1
    fixed: vendor fix RHSA-2026:92579
  • Red Hat OpenShift AI 3.0 rhai/base-image-cpu-rhel9 1793329709, rhai/base-image-tpu-rhel9 1793329706, rhai/base-image-cuda-rhel9 1793328358, rhai/base-image-rocm-rhel9 1793329305, rhai/base-image-spyre-rhel9 1793327611
    fixed: vendor fix RHSA-2026:94459
  • Red Hat OpenShift AI 3.4 rhai/base-image-cpu-rhel9 1793327311, rhai/base-image-tpu-rhel9 1793330461, rhai/base-image-gaudi-rhel9 1793327499, rhai/base-image-spyre-rhel9 1793326217, rhai/base-image-neuron-rhel9 1793329624, rhai/base-image-rocm-6.4-rhel9 1793329011, +3 more
    fixed: vendor fix RHSA-2026:94455
  • Red Hat OpenShift AI 3.5 rhai/base-image-cpu-rhel9 1793330940, rhai/base-image-tpu-rhel9 1793328643, rhai/base-image-gaudi-rhel9 1793327512, rhai/base-image-rubin-rhel9 1793329296, rhai/base-image-spyre-rhel9 1793330882, rhai/base-image-neuron-rhel9 1793326392, +3 more
    fixed: vendor fix RHSA-2026:94462

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
44 d ago

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gitlab.gnome.org https://gitlab.gnome.org/GNOME/librsvg/-/work_items/1241 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
GitHub 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
npm next
>=10.0.0, <15.5.28
>=16.0.0, <16.4.1
15.5.28
16.4.1
crates.io librsvg
<2.57.5
>=2.60.0-beta.0, <2.60.3
>=2.61.0, <2.61.5
>=2.62.0-beta.0, <2.62.4
>=2.63.0-beta.0, <2.63.2
>=0.0.0-0, <2.57.5
>=2.57.90, <2.60.3
>=2.61.90, <2.62.4
>=2.62.90, <2.63.2
2.57.5
2.60.3
2.61.5
2.62.4
2.63.2

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle 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 OpenShift AI 3.0
  • Red Hat Red Hat OpenShift AI 3.4
  • Red Hat Red Hat OpenShift AI 3.5
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux AI (RHEL AI) 3
  • Red Hat Red Hat OpenShift AI (RHOAI)

Classification

Weakness
  • CWE-416 Use After Free
  • CWE-1395 Dependency on Vulnerable Third-Party Component
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of vercel/next.js published their own advisory on GitHub. Reviewed sources take precedence over it.