CVE-2026-69245— Guzzle: Noncanonical cookie domain keeps subdomain scope

Guzzle: Noncanonical cookie domain keeps subdomain scope

Guzzle is an extensible PHP HTTP client. Prior to 7.15.2 and 8.0.1, SetCookie::matchesDomain() gives every subdomain of a cookie Domain that cookie unless SetCookie::matchesDomain() recognizes the Domain as an IP literal or a numeric host, and the decision comes from the domain's own text, so two spellings a transport reads as an address keep subdomain scope. Hexadecimal and mixed-base forms such as 0x7f000001 and 0177.0.0.0x1 go unrecognized while libcurl 8.21.0 reads both as 127.0.0.1. A percent-escaped Domain keeps that scope on both branches because percent-decoding sits above numeric parsing, so 192.168.0.%31 and 127.0.0.1%2e are registered names in the URI grammar rather than address literals, and no numeric rule in any base classifies them, while libcurl decodes the host before resolving and reads them as 192.168.0.1 and 127.0.0.1. A cookie stored for Domain=0x7f000001 is placed in the Cookie header of a request to evil.0x7f000001, disclosing a session identifier or token to a host that is not that address, and a response from evil.0x7f000001 setting Domain=0x7f000001 is accepted into the jar and replayed to the address, so a server answering for the look-alike name can fix a session or set application state. Exploitation requires the application to enable cookie support, address an origin by one of these spellings, and contact a host whose name ends in that spelling. This issue is fixed in versions 7.15.2 and 8.0.1.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

不正确的行为次序：规范化之前验证

Guzzle 处理逻辑错误漏洞

guzzle是guzzle组织的一款HTTP客户端Web组件。 Guzzle 7.15.2之前版本和8.0.1之前版本存在安全漏洞，该漏洞源于SetCookie::matchesDomain()函数对Cookie Domain的解析不当，未能正确识别十六进制和混合进制等IP地址形式，导致Cookie被错误地应用于所有子域，可能泄露会话标识或令牌。

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