GHSA-F283-GHQC-FG79 Guzzle: Unbounded response cookies risk denial of service

Impact In affected versions, Guzzle's built-in CookieJar accepts any number of Set-Cookie header fields from one response, with no limit on the size of each field. When a later request matches the stored cookies, Guzzle places every match into one generated Cookie header without limiting the numb...

GHSA-G446-98W2-8P5W Guzzle: Cookie Disclosure and Injection via IP-Address Domains

Impact CookieJar does not restrict a cookie scoped to an IP address to the exact host that set it. When a stored cookie's Domain attribute is an IPv4 literal Domain=192.168.0.1, a bracketed IPv6 literal Domain=::1, or a bare numeric value that denotes an IPv4 address Domain=1, which is 0.0.0.1,...

Guzzle: Cookie Disclosure and Injection via IP-Address Domains

Impact CookieJar does not restrict a cookie scoped to an IP address to the exact host that set it. When a stored cookie's Domain attribute is an IPv4 literal Domain=192.168.0.1, a bracketed IPv6 literal Domain=::1, or a bare numeric value that denotes an IPv4 address Domain=1, which is 0.0.0.1,...

GHSA-94PJ-82F3-465W Guzzle: Proxy-Authorization headers can be sent to origin servers

Impact In affected versions, the built-in cURL handlers CurlHandler and CurlMultiHandler put every first-class request header in cURL's origin header list CURLOPTHTTPHEADER. These handlers are the default when the PHP cURL extension is available. They move Proxy-Authorization to the proxy-only li...

Guzzle: Proxy-Authorization headers can be sent to origin servers

Impact In affected versions, the built-in cURL handlers CurlHandler and CurlMultiHandler put every first-class request header in cURL's origin header list CURLOPTHTTPHEADER. These handlers are the default when the PHP cURL extension is available. They move Proxy-Authorization to the proxy-only li...

Insufficiently Protected Credentials

Overview Affected versions of this package are vulnerable to Insufficiently Protected Credentials in the handling of Proxy-Authorization headers by the cURL handlers and stream handler. An attacker can obtain proxy credentials by controlling the origin server and capturing the credentials sent...

PT-2026-67328

Name of the Vulnerable Software and Affected Versions guzzlehttp/guzzle versions prior to 7.15.1 Description The CookieJar component fails to preserve the host-only scope of response cookies that are set without a Domain attribute or with an empty one. Instead of marking these cookies as host-onl...

PT-2026-67327

Name of the Vulnerable Software and Affected Versions guzzlehttp/guzzle versions prior to 7.15.1 Description An information disclosure issue exists in the RedirectMiddleware when the optional allow redirects.referer setting is enabled. During a same-scheme redirect such as HTTPS to HTTPS, the...

PT-2026-67326

Name of the Vulnerable Software and Affected Versions guzzlehttp/guzzle versions prior to 7.15.1 Description A denial of service issue exists in the CookieJar component. The system accepts an unlimited number of Set-Cookie header fields without size restrictions. A malicious server can return...

CVE-2026-59882

A flaw was found in guzzlehttp/psr7, a PHP library for HTTP messages. The Uri::assertValidHost function fails to properly validate URI host components, allowing for the inclusion of authority delimiters, embedded ports, or malformed IPv6 brackets. This improper validation can lead to discrepancie...

Linux Distros Unpatched Vulnerability : CVE-2026-59883

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Guzzle is an extensible PHP HTTP client. Prior to 7.12.3, CookieJar did not restrict cookies scoped to IP- address or bare-numeric Domain values to the exact ho...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error via the CookieJar process. An attacker can access or manipulate cookies belonging to other hosts by exploiting improper domain matching for IP-address or bare-numeric domains. Remediation Upgrade guzzlehttp/guzzl...

Interpretation Conflict

Overview Affected versions of this package are vulnerable to Interpretation Conflict via the assertValidHost function. An attacker can cause security or routing decisions to be made based on a mismatched host by crafting a URI with authority delimiters, embedded ports, or malformed IPv6 brackets...

CVE-2026-59882

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.3, Uri::assertValidHost does not reject URI host components containing authority delimiters, embedded ports, or malformed IPv6 brackets, allowing Uri::getHost to disagree with the URI authority used for security ...

CVE-2026-59883

Guzzle is an extensible PHP HTTP client. Prior to 7.12.3, CookieJar did not restrict cookies scoped to IP-address or bare-numeric Domain values to the exact host that set them, because SetCookie::matchesDomain applied ordinary suffix matching to domains such as 192.168.0.1, ::1, or 1, allowing...

UBUNTU-CVE-2026-59883

Guzzle is an extensible PHP HTTP client. Prior to 7.12.3, CookieJar did not restrict cookies scoped to IP-address or bare-numeric Domain values to the exact host that set them, because SetCookie::matchesDomain applied ordinary suffix matching to domains such as 192.168.0.1, ::1, or 1, allowing...

CVE-2026-59883

CVE-2026-59883 – Guzzle: CookieJar domain-matching flaw in the PHP HTTP client allowed cookies scoped to IP-address or bare-numeric domains (e.g., 192.168.0.1, ::1) to be accepted by non-origin hosts due to SetCookie::matchesDomain() applying ordinary suffix matching. Affects versions prior to 7....

CVE-2026-59883

Guzzle is an extensible PHP HTTP client. Prior to 7.12.3, CookieJar did not restrict cookies scoped to IP-address or bare-numeric Domain values to the exact host that set them, because SetCookie::matchesDomain applied ordinary suffix matching to domains such as 192.168.0.1, ::1, or 1, allowing...

CVE-2026-59883 Guzzle: Cookie Disclosure and Injection via IP-Address Domains

Guzzle is an extensible PHP HTTP client. Prior to 7.12.3, CookieJar did not restrict cookies scoped to IP-address or bare-numeric Domain values to the exact host that set them, because SetCookie::matchesDomain applied ordinary suffix matching to domains such as 192.168.0.1, ::1, or 1, allowing...

CVE-2026-59882 guzzlehttp/psr7: Host Confusion via Weak URI Host Validation

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.3, Uri::assertValidHost does not reject URI host components containing authority delimiters, embedded ports, or malformed IPv6 brackets, allowing Uri::getHost to disagree with the URI authority used for security ...