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CVE-2026-11525

1 advisory.

npm/undici CVE-2026-11525: low 3.7, EPSS 0.24%

undici vulnerable to Set-Cookie SameSite attribute downgrade via permissive substring matching

Action: Upgrade undici to 6.27.0 or later.

npm i undici@6.27.0
npm i undici@7.28.0
npm i undici@8.5.0

Affected

introducedfixedlast affected
06.27.0-
7.0.07.28.0-
8.0.08.5.0-

Fixed versions

6.27.07.28.08.5.0

Sources

CVE-2026-11525 · published · modified · JSON