CVE-2021-39178
Versions of Next.js between 10.0.0 and 11.0.0 contain a cross-site scripting vulnerability.
Does this matter?
Lower severity and a low EPSS score (1.14%). Track it; it rarely justifies an emergency change on its own.
Description
Next.js is a React framework. Versions of Next.js between 10.0.0 and 11.0.0 contain a cross-site scripting vulnerability. In order for an instance to be affected by the vulnerability, the `next.config.js` file must have `images.domains` array assigned and the image host assigned in `images.domains` must allow user-provided SVG. If the `next.config.js` file has `images.loader` assigned to something other than default or the instance is deployed on Vercel, the instance is not affected by the vulnerability. The vulnerability is patched in Next.js version 11.1.1.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.14% probability · 65th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- vercel/next.js
- Source
- security-advisories@github.com
References
- https://github.com/vercel/next.js/releases/tag/v11.1.1Patch, Release Notes, Third Party Advisory
- https://github.com/vercel/next.js/security/advisories/GHSA-9gr3-7897-pp7mPatch, Third Party Advisory
- https://github.com/vercel/next.js/releases/tag/v11.1.1Patch, Release Notes, Third Party Advisory
- https://github.com/vercel/next.js/security/advisories/GHSA-9gr3-7897-pp7mPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.