CVE-2026-55674

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, an unauthenticated attacker could send a single request with a crafted colorschemeid or darkschemeid cookie to inject arbitrary HTML into a Discourse page. Because the cookie value was rendered...

CVE-2026-55674

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, an unauthenticated attacker could send a single request with a crafted colorschemeid or darkschemeid cookie to inject arbitrary HTML into a Discourse page. Because the cookie value was rendered...

CVE-2026-55674

Discourse versions before 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0 render the unescaped color_scheme_id/dark_scheme_id cookie value into a color scheme tag, allowing an unauthenticated attacker to break out of the attribute, bypass Discourse's nonce-based CSP, and execute arbitrary JavaScript i...

PT-2026-76681

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, an unauthenticated attacker could send a single request with a crafted color scheme id or dark scheme id cookie to inject arbitrary HTML into a Discourse page. Because the cookie value was render...

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...

[SECURITY] [DLA 4721-1] async-http-client security update

------------------------------------------------------------------------- Debian LTS Advisory DLA-4721-1 [email protected] https://www.debian.org/lts/security/ Chris Lamb August 06, 2026 https://wiki.debian.org/LTS -...

NPM: undici vulnerable to cookie attribute injection via unsanitized domain and unparsed setCookie fields

NPM: undici vulnerable to cookie attribute injection via unsanitized domain and unparsed setCookie fields vulnerability discovered by ? in WordPress Npm undici versions 6.28.0...

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...

CVE-2026-16729 undici vulnerable to cookie attribute injection via unsanitized domain and unparsed setCookie fields

undici's setCookie function does not fully sanitize cookie attributes. In undici before 6.28.0, from 7.0.0 up to before 7.29.0, and from 8.0.0 up to before 8.9.0, a domain value is not checked for semicolons and entries in the unparsed array are not sanitized, so attacker-influenced input can...

CVE-2026-16729

undici vulnerable to cookie attribute injection via unsanitized domain and unparsed setCookie fields. In undici

CVE-2026-66753

tiny-http through 0.12.0 contains an HTTP header injection vulnerability that allows attackers to inject carriage return 0x0D and line feed 0x0A bytes into HTTP header values on both request and response sides due to insufficient validation in header parsing and serialization. Attackers can explo...

CVE-2026-66753 tiny-http 0.12.0 HTTP Response Splitting via Header Injection

tiny-http through 0.12.0 contains an HTTP header injection vulnerability that allows attackers to inject carriage return 0x0D and line feed 0x0A bytes into HTTP header values on both request and response sides due to insufficient validation in header parsing and serialization. Attackers can explo...

CVE-2026-66753

tiny-http through 0.12.0 contains an HTTP header injection vulnerability that allows attackers to inject carriage return 0x0D and line feed 0x0A bytes into HTTP header values on both request and response sides due to insufficient validation in header parsing and serialization. Attackers can explo...

CVE-2026-66753

The CVE-2026-66753 entry concerns tiny-http up to version 0.12.0, where HTTP header values can be injected with CRLF characters due to insufficient validation in header parsing/serialization. The vulnerability enables response splitting, cache poisoning, session fixation via Set-Cookie injection,...

CVE-2026-15076

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...

Linux Distros Unpatched Vulnerability : CVE-2026-63771

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Adminer before 5.4.3 contains a cookie injection vulnerability that allows attackers to manipulate cookie attributes by injecting arbitrary values through the...

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,...

CVE-2026-63771

Adminer before 5.4.3 contains a cookie injection vulnerability that allows attackers to manipulate cookie attributes by injecting arbitrary values through the unsanitized X-Forwarded-Prefix HTTP header used in Set-Cookie path attributes. Attackers can exploit a misconfigured reverse proxy to...

DEBIAN-CVE-2026-63771

Adminer before 5.4.3 contains a cookie injection vulnerability that allows attackers to manipulate cookie attributes by injecting arbitrary values through the unsanitized X-Forwarded-Prefix HTTP header used in Set-Cookie path attributes. Attackers can exploit a misconfigured reverse proxy to...