{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-115779","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-23T13:28:51.847Z","datePublished":"2026-11-03T20:40:19.864Z","dateUpdated":"2026-11-03T21:26:55.431Z"},"containers":{"cna":{"title":"Effect: Cookie attribute injection via domain, path, and name fields in @effect/platform makeCookie()","problemTypes":[{"descriptions":[{"cweId":"CWE-74","lang":"en","description":"CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/Effect-TS/effect/security/advisories/GHSA-chp3-j5qr-2vfr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Effect-TS/effect/security/advisories/GHSA-chp3-j5qr-2vfr"},{"name":"https://github.com/Effect-TS/effect/pull/6763","tags":["x_refsource_MISC"],"url":"https://github.com/Effect-TS/effect/pull/6763"},{"name":"https://github.com/Effect-TS/effect/pull/6765","tags":["x_refsource_MISC"],"url":"https://github.com/Effect-TS/effect/pull/6765"},{"name":"https://github.com/Effect-TS/effect/commit/4a57af24011db1d66e947289d2f7ffc2074696d2","tags":["x_refsource_MISC"],"url":"https://github.com/Effect-TS/effect/commit/4a57af24011db1d66e947289d2f7ffc2074696d2"},{"name":"https://github.com/Effect-TS/effect/commit/5859b373b9be04d5037a594196b4743ad80379bd","tags":["x_refsource_MISC"],"url":"https://github.com/Effect-TS/effect/commit/5859b373b9be04d5037a594196b4743ad80379bd"},{"name":"https://github.com/Effect-TS/effect/releases/tag/@effect/platform@0.97.1","tags":["x_refsource_MISC"],"url":"https://github.com/Effect-TS/effect/releases/tag/@effect/platform@0.97.1"},{"name":"https://github.com/Effect-TS/effect/releases/tag/effect@4.0.0-beta.103","tags":["x_refsource_MISC"],"url":"https://github.com/Effect-TS/effect/releases/tag/effect@4.0.0-beta.103"}],"affected":[{"vendor":"Effect-TS","product":"effect","versions":[{"version":">= 4.0.0-beta.0, < 4.0.0-beta.103","status":"affected"}]},{"vendor":"@effect","product":"platform","versions":[{"version":">= 0.1.0, < 0.97.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-11-03T20:40:19.864Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-chp3-j5qr-2vfr","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-03T21:26:42.883505Z","id":"CVE-2026-115779","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-03T21:26:55.431Z"}}]}}