vulnerability · Tue 08 Sep 2026 · 21:26 UTC
GHSA-26w7-cxv4-gfx2: Astro: Remote code execution through AVIF image optimization
Filed UTCSource GTH ↗
A vulnerability in libheif, used by the default Sharp image service in Astro, can lead to remote code execution when a malicious AVIF image is optimized. Projects are affected when an attacker can cause Astro to process an untrusted AVIF image. The fix was released in Astro 7.2.8, which requires Sharp 0.35.4.
Signals
as the pipeline stamped them- High
- Critical vulnerability — CVSS 9.8
- What to do
- Critical severity — schedule an urgent patch.
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