Low severity · published May 15, 2025
CVE-2025-47279
undici Denial of Service attack via bad certificate data
3.1
CVSS
0.3%
EPSS
No
On KEV
Description
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 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. This has been patched in versions 5.29.0, 6.21.2, and 7.5.0. As a workaound, avoid calling a webhook repeatedly if the webhook fails.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UN
undici · nodejs
< 5.29.0; >= 6.0.0, < 6.21.2; >= 7.0.0, < 7.5.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-47279
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-47279
github.com
https://github.com/nodejs/undici/commit/f317618ec28753a4218beccea048bcf89c36db25
github.com
https://github.com/nodejs/undici/issues/3895
github.com
https://github.com/nodejs/undici/pull/4088
github.com
https://github.com/nodejs/undici/security/advisories/GHSA-cxrh-j4jr-qwg3
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