Use After Free in Red Hat Enterprise Linux 10
CVE-2026-96889
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (46.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.006 · change: +0.004
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
- rafabd1/VectorFreed
- lion9453/CVE-2026-96889-nextjs-rce
- AmanSin001/next-security-check
- CompleteTech-Security/sharp-vectorfreed-check
- CompleTetech-Security/sharp-rsvg-rce-check
- CompleTech-Security/sharp-rsvg-rce-check
- CompleteTech-Security/sharp-rsvg-rce-check
- completetech-security/sharp-rsvg-rce-check
- CompleteTech-LLC/sharp-rsvg-rce-check
- pauleprichna/cybersecurity
References
- access.redhat.com/security/cve/CVE-2026-96889 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- crates.io/crates/librsvg
- gitlab.gnome.org/GNOME/librsvg/-/work_items/1241
- rustsec.org/advisories/RUSTSEC-2026-0305.html
- access.redhat.com/errata/RHSA-2026:86331 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:86841 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:86842 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:86921 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:92336 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-96889?
- CVE-2026-96889 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Use After Free. CVSS score: 7.8/10. Published 2026-09-23.
- How severe is CVE-2026-96889?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2026-96889 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.