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CVE-2026-13697

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 dire
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:661b293ffc82446604e622a18274fac3ff61ff2b38ee3506a5d9f58512054d75
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:323ff3ab49b125408b09bda7fecf223ad6668e3491323a30c476b0e145eb5f09 · sha256:d55ff740a8ea6715… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-525","description":"CWE-525: Use of Web Browser Cache Containing Sensitive Information","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:323ff3ab49b125408b09bda7fecf223ad6668e3491323a30c476b0e145eb5f09 · sha256:d55ff740a8ea6715… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-248","description":"CWE-248: Uncaught Exception","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:323ff3ab49b125408b09bda7fecf223ad6668e3491323a30c476b0e145eb5f09 · sha256:d55ff740a8ea6715… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","packageURL":"pkg:npm/undici","product":"undici","vendor":"undici","versions":[{"lessThan":"7.29.0","status":"affected","version":"7.0.0","versionType":"semver"},{"status":"unaffected","version":"7.29.0","versionType":"semver"},{"lessThan":"8.9.0","status":"affected","version":"8.0.0","versionType":"semver"},{"status":"unaffected","version":"8.9.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:323ff3ab49b125408b09bda7fecf223ad6668e3491323a30c476b0e145eb5f09 · sha256:d55ff740a8ea6715… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.4,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:323ff3ab49b125408b09bda7fecf223ad6668e3491323a30c476b0e145eb5f09 · sha256:d55ff740a8ea6715… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:323ff3ab49b125408b09bda7fecf223ad6668e3491323a30c476b0e145eb5f09 · sha256:d55ff740a8ea6715… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-525","description":"CWE-525: Use of Web Browser Cache Containing Sensitive Information","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:323ff3ab49b125408b09bda7fecf223ad6668e3491323a30c476b0e145eb5f09 · sha256:d55ff740a8ea6715… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-248","description":"CWE-248: Uncaught Exception","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:323ff3ab49b125408b09bda7fecf223ad6668e3491323a30c476b0e145eb5f09 · sha256:d55ff740a8ea6715… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"url":"https://cna.openjsf.org/security-advisories.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:323ff3ab49b125408b09bda7fecf223ad6668e3491323a30c476b0e145eb5f09 · sha256:d55ff740a8ea6715… · /containers/cna/references/1
{"url":"https://github.com/nodejs/undici/security/advisories/GHSA-4cwx-7wf7-3272"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:323ff3ab49b125408b09bda7fecf223ad6668e3491323a30c476b0e145eb5f09 · sha256:d55ff740a8ea6715… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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