Vulnerability in vercel satori

[ Description ]Official description

Satori is a library to convert HTML and CSS to SVG. Starting in version 0.0.27 and prior to version 0.33.5, Satori does not properly escape certain values before including them in generated SVG output. This can allow crafted values to be interpreted as SVG markup. The impact depends on how the generated SVG is consumed. Version 0.33.5 contains a patch. No complete workaround exists besides upgrading. Applications that cannot immediately upgrade should not render attacker-controlled content with Satori.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund23 Sep 2026WID-SEC-2026-3538

  Vercel Next.js: Vulnerability allows code execution Translated from German

  CVE-2026-94545

[ References ]References

• github.com/vercel/next.js/commit/868fad38690d72088868f299fa2bef339b26838e
• github.com/vercel/next.js/releases/tag/v16.3.6
• github.com/vercel/next.js/security/advisories/GHSA-vcvr-r3jv-pc5j
• github.com/vercel/satori/commit/26a52affc031216fee5882b6e965c8dbc7ac1782
• github.com/vercel/satori/pull/814
• github.com/vercel/satori/security/advisories/GHSA-wx4j-mvgx-mqwp