CVE-2026-115779
Severity not reportedEffect is a TypeScript framework that consists of several packages that work together to help build TypeScript applications.
Effect is a TypeScript framework that consists of several packages that work together to help build TypeScript applications. From @effect/platform 0.1.0 until 0.97.1 and effect 4.0.0-beta.0 until 4.0.0-beta.103, the name, domain, and path fields passed to makeCookie() allow semicolon delimiters that serializeCookie() writes verbatim into Set-Cookie headers. A caller that supplies attacker-controlled values can append cookie attributes, including a broader Domain or, when the caller has not set those options itself, SameSite=None or Max-Age. Encoded cookie values and CR or LF characters remain unaffected. This can widen a cookie's scope or add otherwise-unset cookie attributes. This issue is fixed in @effect/platform 0.97.1 and effect 4.0.0-beta.103.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/Effect-TS/effect/commit/4a57af24011db1d66e947289d2f7ffc2074696d2 security-advisories@github.com
- https://github.com/Effect-TS/effect/commit/5859b373b9be04d5037a594196b4743ad80379bd security-advisories@github.com
- https://github.com/Effect-TS/effect/pull/6763 security-advisories@github.com
- https://github.com/Effect-TS/effect/pull/6765 security-advisories@github.com
- https://github.com/Effect-TS/effect/releases/tag/@effect/platform@0.97.1 security-advisories@github.com
- https://github.com/Effect-TS/effect/releases/tag/effect@4.0.0-beta.103 security-advisories@github.com
- https://github.com/Effect-TS/effect/security/advisories/GHSA-chp3-j5qr-2vfr security-advisories@github.com