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CVE-2026-96889

HighPublished

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

Published: Sep 23, 2026
Updated: Sep 25, 2026
Assigning CNA: redhat
Evidence observed: Sep 25, 2026

Primary CVSS

7.8/ 10High

cvelist · CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Sources

VectorFreedPoC
Documents the VectorFreed librsvg use-after-free RCE chain (CVE-2026-96889) with an SVG generator PoC and remediation guidance for librsvg, Next.js, and Satori.

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