GHSA-26w7-cxv4-gfx2: Astro: Remote code execution through AVIF image optimization
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.
Published Sep 8, 2026
Affected packages
astro
- Ecosystem
- npm
- Affected
- < 7.2.8
- Fixed in
- 7.2.8
- Check
npm ls astro
Advisory details
From the GitHub Advisory Database (CC BY 4.0).
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.
Credited to cn-panda.
References
- https://github.com/strukturag/libheif/security/advisories/GHSA-g89c-p67h-r497
- https://github.com/withastro/astro/security/advisories/GHSA-26w7-cxv4-gfx2
- https://github.com/withastro/astro/commit/ecb4082131490b4fe9a56aa44fda84b54ef8967b
- https://github.com/withastro/astro/releases/tag/[email protected]
- https://github.com/advisories/GHSA-26w7-cxv4-gfx2
How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology