Description
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.
Published: 2026-09-23
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Potential arbitrary code execution and denial of service
Action: Assess Impact
AI Analysis

Impact

A use‑after‑free fault arises when librsvg processes an SVG document that contains nested XML inclusions (Xincludes) with duplicate entity declarations. The library mistakenly frees an XML entity that remains in use by the parser, which can lead to a program crash or the execution of arbitrary code if the attacker supplies a crafted SVG file.

Affected Systems

The flaw is present in Red Hat Enterprise Linux releases 6 through 10, where the bundled librsvg library is used by graphical and document‑rendering components. All supported versions that ship the affected librsvg package are impacted.

Risk and Exploitability

The vulnerability has a CVSS score of 7.8, indicating high severity. The EPSS score is not available and it is not listed in CISA's KEV catalog, so exploitation has not been documented in the wild. Based on the description, it is inferred that an attacker would need to supply or manipulate a trusted application that loads an SVG file via librsvg, indicating a local or service‑level attack surface. The lack of a public exploit does not negate the risk, but it indicates that the likelihood of widespread exploitation remains uncertain.

Generated by OpenCVE AI on September 23, 2026 at 22:06 UTC.

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.


OpenCVE Recommended Actions

  • Upgrade librsvg to a version that includes the fix once the Red Hat security team releases an update
  • Avoid loading untrusted or user‑supplied SVG documents in applications that use librsvg
  • If an update cannot be applied, consider disabling or sandboxing librsvg usage to limit potential damage
  • No vendor‑approved workaround exists; no temporary mitigations available.

Generated by OpenCVE AI on September 23, 2026 at 22:06 UTC.

Tracking

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6555-1 librsvg security update
History

Fri, 25 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 24 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Wed, 23 Sep 2026 19:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Librsvg: use-after-free when xml includes have duplicated entities
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-416
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Subscriptions

Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-25T17:53:52.750Z

Reserved: 2026-09-23T18:52:33.922Z

Link: CVE-2026-96889

cve-icon Vulnrichment

Updated: 2026-09-25T17:53:18.774Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-23T20:17:27.587

Modified: 2026-09-25T18:17:34.240

Link: CVE-2026-96889

cve-icon Redhat

Severity : Important

Publid Date: 2026-09-23T12:00:00Z

Links: CVE-2026-96889 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-24T09:09:19Z

Weaknesses