CVE-2026-82209

When libpsl support is enabled, libcurl fails to enforce Public Suffix List boundary checks while processing a Set-Cookie header. Specifically, if the Domain attribute explicitly matches an origin host that is a public suffix (e.g., Domain=co.uk set by co.uk), libcurl fails to coerce it into a st...

CVE-2026-82209

When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing a Set-Cookie header where the Domain attribute explicitly matches an origin host that is itself a public suffix e.g., Domain=co.uk set by co.uk. Instead of coercing it into a strict...

CVE-2026-82209 domain-scoped PSL domain cookie

When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing a Set-Cookie header where the Domain attribute explicitly matches an origin host that is itself a public suffix e.g., Domain=co.uk set by co.uk. Instead of coercing it into a strict...

CVE-2026-82209 domain-scoped PSL domain cookie

When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing a Set-Cookie header where the Domain attribute explicitly matches an origin host that is itself a public suffix e.g., Domain=co.uk set by co.uk. Instead of coercing it into a strict...

CURL-CVE-2026-82209 domain-scoped PSL domain cookie

When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing a Set-Cookie header where the Domain attribute explicitly matches an origin host that is itself a public suffix e.g., Domain=co.uk set by co.uk. Instead of coercing it into a strict...

PT-2026-84659

Name of the Vulnerable Software and Affected Versions curl affected versions not specified Description When libpsl support is enabled, the software fails to enforce the Public Suffix List boundary check while processing a Set-Cookie header. This occurs when the Domain attribute explicitly matches...

CVE-2026-67355

A flaw was found in guzzlehttp/guzzle. The software does not correctly enforce the "host-only" scope for cookies, which means it stores the request host in the cookie's domain field instead of restricting the cookie to the exact host. This vulnerability could allow an attacker who controls a...

curl: CVE-2026-82209: domain-scoped PSL domain cookie

Summary When libpsl is enabled and a response host is itself a public suffix e.g. github.io, a Set-Cookie header whose Domain attribute exactly equals that host is accepted by psliscookiedomainacceptable but stored with tailmatch = TRUE. RFC 6265 §5.3 requires this exact-match case to produce a...

USN-8655-1 async-http-client vulnerability

It was discovered that AsyncHttpClient did not properly verify that the responding host was allowed to set cookies for a given domain in its ThreadSafeCookieStore. An attacker could use this to plant cookies scoped to unrelated domains, which would then be sent on later requests to those domains...

USN-8655-1: AsyncHttpClient vulnerability

It was discovered that AsyncHttpClient did not properly verify that the responding host was allowed to set cookies for a given domain in its ThreadSafeCookieStore. An attacker could use this to plant cookies scoped to unrelated domains, which would then be sent on later requests to those domains...

io.vertx/vertx-web: Eclipse Vert.x Web Client: Information disclosure via improper cookie domain validation

A flaw was found in Eclipse Vert.x Web Client. The WebClientSession component does not properly validate the Domain attribute of a Set-Cookie response header against the originating server's domain. This vulnerability allows a remote attacker to inject a cookie scoped to an arbitrary third-party...

DEBIAN-CVE-2026-69245

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...

CVE-2026-69245

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...

CVE-2026-69245

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...

UBUNTU-CVE-2026-69245

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...

Guzzle: Noncanonical cookie domain keeps subdomain scope

Impact SetCookie::matchesDomain gives every subdomain of a cookie Domain that cookie unless it recognizes the Domain as an IP literal or a numeric host, and it decides that from the domain's own text, so two spellings a transport reads as an address keep subdomain scope. On 7.15, hexadecimal and...

CVE-2026-69245

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...

CVE-2026-69245 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...

CVE-2026-69245 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...

EUVD-2026-52443

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...