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    CVE-2026-119416

    CakePHP through 5.4.3 contains an improper cookie domain validation vulnerability in the Http Client CookieCollection that allows malicious servers to receive and plant cookies by abusing unanchored suffix matching. Attackers controlling a host such as one ending in a victim domain suffix, or sending Set-Cookie Domain values for unrelated hosts, can steal session cookies or inject cookies into shared client cookie jars.

    Published:Oct 30, 2026
    Last Modified:Oct 30, 2026
    EPS:Oct 30, 2026
    EPSS Score:
    CVSS Score:4.8

    Affected Products

    Vendor
    Cakephp
    Product
    Cakephp

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-346 Origin Validation Error

    Related CVEs

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    References

    https://abraxaslabs.tech/research/cakephp-cookie-suffix
    https://github.com/cakephp/cakephp
    https://github.com/cakephp/cakephp/blob/6f3dd91371ac0698b64024ddb21d57def9fbba91/src/Http/Cookie/CookieCollection.php#L315
    https://github.com/cakephp/cakephp/blob/6f3dd91371ac0698b64024ddb21d57def9fbba91/src/Http/Cookie/CookieCollection.php#L74
    https://github.com/cakephp/cakephp/commit/01753266738606bc0e48e61e44a6e252f11386f9
    https://github.com/cakephp/cakephp/commit/5d9d01a91f0e678d857a94115de12c3e02f3fbba
    https://github.com/cakephp/cakephp/commit/819b45cbcc5ba864568cb57f62e4fde650b41161
    https://github.com/cakephp/cakephp/commit/bbba5ed06d5cea7e78333b01e65557cff7a28306
    https://github.com/cakephp/cakephp/pull/19702
    https://www.vulncheck.com/advisories/cakephp-through-5.4.3-cookie-leakage-via-http-client-cookiecollection-domain-matching

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High