undici Denial of Service attack via bad certificate data
### Impact Applications that use undici to implement a webhook-like system are vulnerable. If the attacker set up a server with an invalid certificate, and they can force the application to call the webhook repeatedly, then they can cause a memory leak. ### Patches This has been patched in https://github.com/nodejs/undici/pull/4088. ### Workarounds If a webhook fails, avoid keep calling it repeatedly. ### References Reported as: https://github.com/nodejs/undici/issues/3895
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-47279US | — | — | ||
Undici is an HTTP/1.1 client for Node.js. Prior to versions 5.29.0, 6.21.2, and 7.5.0, applications that use undici to implement a webhook-like system are vulnerable. If the attack… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/nodejs/undiciPACKAGE
- https://github.com/nodejs/undici/commit/f317618ec28753a4218beccea048bcf89c36db25WEB
- https://github.com/nodejs/undici/issues/3895WEB
- https://github.com/nodejs/undici/pull/4088WEB
- https://github.com/nodejs/undici/security/advisories/GHSA-cxrh-j4jr-qwg3WEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-47279ADVISORY
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