CVE-2026-13697 (GCVE-0-2026-13697)

Vulnerability from cvelistv5 – Published: 2026-07-29 16:32 – Updated: 2026-07-29 17:53
VLAI
Title
undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives
Summary
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.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 17:53 UTC
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-248 - Uncaught Exception
  • CWE-525 - Use of Web Browser Cache Containing Sensitive Information
Assigner
openjs CNA under the redhat root
CNA scorecard C 65/100 over 127 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
undici undici Affected: 7.0.0 , < 7.29.0 (semver)
Unaffected: 7.29.0 (semver)
Affected: 8.0.0 , < 8.9.0 (semver)
Unaffected: 8.9.0 (semver)
guessed Create a notification for this product.
Credits
mcollina UlisesGascon
Show details on NVD website
To clipboard 

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