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

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.

Timeline

1. Sep 23, 2026, 7:40 PM UTCCVE published
2. Sep 25, 2026, 5:53 PM UTCCISA SSVC assessment

   Exploitation: poc · Automatable: no · Technical impact: total

3. Oct 30, 2026, 12:07 AM UTCRecord last updated

Affected versions

• glycin-loaders

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• glycin-loaders

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• librsvg2

  Version range not reported

• librsvgcrates.io

  From 0.0.0-0 · fixed in 2.57.5; From 2.57.90 · fixed in 2.60.3; From 2.61.0 · fixed in 2.61.5; From 2.61.90 · fixed in 2.62.4; From 2.62.90 · fixed in 2.63.2

• librsvgcrates.io

  fixed in 2.57.5

• librsvgcrates.io

  From 2.60.0-beta.0 · fixed in 2.60.3

• librsvgcrates.io

  From 2.61.0 · fixed in 2.61.5

• librsvgcrates.io

  From 2.62.0-beta.0 · fixed in 2.62.4

• librsvgcrates.io

  From 2.63.0-beta.0 · fixed in 2.63.2

References 24