What’s Vulnerable › Vulnerabilities

CVE-2026-94545: Satori-generated SVG has improper escaping

• Severity: medium (CVSS 5.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-30 · updated 2026-09-30
• Weakness: CWE-116

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.

Affected products

• Next.js: from 16.2.0, < 16.3.6
• vercel satori: from 0.0.27, < 0.33.5

References

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

Get alerted when CVE-2026-94545 or the next vulnerability affects your stack