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CVE-2026-9678

CVE Details​

Visit the official vulnerability details page for CVE-2026-9678 to learn more.

Initial Publication​

06/17/2026

Last Update​

06/25/2026

Third Party Dependency​

undici

NIST CVE Summary​

Impact: Undici's cache interceptor incorrectly classifies some responses as cacheable when the upstream Cache-Control header uses whitespace-padded qualified private or no-cache field names such as private=" authorization" or no-cache="\tauthorization". The parser preserves the surrounding whitespace, so later comparisons against the literal authorization field name fail and the response is stored.

In shared-cache mode, this allows a response containing one user's authenticated data to be served from cache to a subsequent caller, including an unauthenticated caller, when both requests resolve to the same cache key.

Affected applications are those that explicitly enable the cache interceptor (interceptors.cache()) in shared mode, forward Authorization headers upstream, and receive cacheable responses with non-canonical qualified private or no-cache directives.

Patches: Upgrade to undici v7.28.0 or v8.5.0.

Workarounds: If upgrade is not immediately possible, disable shared-cache mode for traffic that includes Authorization headers, avoid caching responses to authenticated requests, or add Vary: Authorization upstream.

CVE Severity​

5.9

Our Official Summary​

Investigation is ongoing to determine how this vulnerability affects our products.

Status​

Analyzed

Affected Products & Versions​

VersionPaletteAIPaletteAI VerteX
1.2.2⚠️ Impacted⚠️ Impacted

Revision History​

No revisions available.