undici's cache interceptor mishandles malformed Cache-Control private directives. In undici 7.0.0 up to before 7.29.0 and 8.0.0 up to before 8.9.0, a response carrying a degenerate qualified private directive, such as private set to an empty value, can be stored in the default shared cache and later served to a different caller with the same cache key, disclosing private response bodies and headers including Set-Cookie. Separately, a Cache-Control header that combines an unqualified private directive with a qualified one triggers an uncaught TypeError in the cache-control parser, which rejects the request and, depending on the consumer's error handling, can terminate the process. Both issues affect applications using the cache interceptor in shared mode, including the default configuration. The issues are fixed in undici 7.29.0 and 8.9.0.
References
| Link | Resource |
|---|---|
| https://cna.openjsf.org/security-advisories.html | Vendor Advisory |
| https://github.com/nodejs/undici/security/advisories/GHSA-4cwx-7wf7-3272 | Mitigation Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
04 Aug 2026, 14:17
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* | |
| First Time |
Nodejs
Nodejs undici |
|
| References | () https://cna.openjsf.org/security-advisories.html - Vendor Advisory | |
| References | () https://github.com/nodejs/undici/security/advisories/GHSA-4cwx-7wf7-3272 - Mitigation, Vendor Advisory |
29 Jul 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-07-29 17:16
Updated : 2026-08-04 14:17
NVD link : CVE-2026-13697
Mitre link : CVE-2026-13697
CVE.ORG link : CVE-2026-13697
JSON object : View
Products Affected
nodejs
- undici