CVE-2026-91991 Tornado before 6.5.8 Cookie Attribute Injection via Capitalized kwargs

Tornado before 6.5.8 contains an incomplete fix for cookie attribute injection that allows attackers to inject arbitrary cookie attributes by passing capitalized or legacy keyword arguments to setcookie. Attackers can embed semicolon-delimited data in capitalized parameters like Domain, Path, or...

CVE-2026-91991 Tornado before 6.5.8 Cookie Attribute Injection via Capitalized kwargs

Tornado before 6.5.8 contains an incomplete fix for cookie attribute injection that allows attackers to inject arbitrary cookie attributes by passing capitalized or legacy keyword arguments to setcookie. Attackers can embed semicolon-delimited data in capitalized parameters like Domain, Path, or...

CVE-2026-91991: Improper Neutralization of CRLF Sequences in HTTP Headers

Tornado before 6.5.8 contains an incomplete fix for cookie attribute injection that allows attackers to inject arbitrary cookie attributes by passing capitalized or legacy keyword arguments to setcookie. Attackers can embed semicolon-delimited data in capitalized parameters like Domain, Path, or...

CVE-2026-69211: Improper Neutralization of CRLF Sequences in HTTP Headers

Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, ResponseCookie.render writes attacker-influenced name, content, domain, path, and extension values without neutralizing semicolons or control characters. An application that constructs a ResponseCookie from unvalidated...

Linux Distros Unpatched Vulnerability : CVE-2026-91991

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Tornado before 6.5.8 contains an incomplete fix for cookie attribute injection that allows attackers to inject arbitrary cookie attributes by passing capitalize...

CVE-2026-88038: Improper Neutralization of Special Elements in Output Used by a Downstream Component

cookies is a Node.js library for reading and writing HTTP cookies, used by Koa via ctx.cookies. In versions before 0.9.2 the library validates the cookie name and value against character sets that reject the semicolon separator, but the domain and path options are checked only against a permissiv...

Tornado: Incomplete fix for CVE-2026-35536: cookie attribute injection re-opened via the legacy case-insensitive `**kwargs` path in `set_cookie`

Summary The CVE-2026-35536 fix added a validation loop that rejects \x00-\x20\x3b\x7f, but only for the hardcoded lowercase keys name/domain/path/samesite. The still-live deprecated kwargs path writes attacker-supplied attribute values straight into the Morsel with no validation, and because...

GHSA-WWV5-G3V4-889X Tornado: Incomplete fix for CVE-2026-35536: cookie attribute injection re-opened via the legacy case-insensitive `**kwargs` path in `set_cookie`

Summary The CVE-2026-35536 fix added a validation loop that rejects \x00-\x20\x3b\x7f, but only for the hardcoded lowercase keys name/domain/path/samesite. The still-live deprecated kwargs path writes attacker-supplied attribute values straight into the Morsel with no validation, and because...

PT-2026-92105

Name of the Vulnerable Software and Affected Versions Tornado versions prior to 6.5.8 Description An incomplete fix for cookie attribute injection allows attackers to inject arbitrary cookie attributes by passing capitalized or legacy keyword arguments to the set cookie function. The validation...

Sensitive Cookie in HTTPS Session Without "Secure" Attribute

Overview org.springframework:spring-web is a package that provides a comprehensive programming and configuration model for modern Java-based enterprise applications - on any kind of deployment platform. Affected versions of this package are vulnerable to Sensitive Cookie in HTTPS Session Without...

CVE-2026-18531

CVE-2026-18531 affects IBM Maximo Application Suite (MAS) versions 9.0, 9.1, and 9.2. The issue is due to a weak HMAC session signing secret, which could allow a remote attacker to tamper with session data. The consequence is potential session integrity loss without requiring user interaction. Ac...

Cookie Attribute Injection

undici is vulnerable to cookie attribute injection. The vulnerability is due to insufficient sanitization of cookie domain and unparsed values in setCookie, allowing attacker-controlled input to inject or override cookie attributes such as SameSite, Secure, and HttpOnly, potentially weakening...

SUSE CVE-2026-16729

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...

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

Impact The setCookie function has two attribute injection paths. validateCookieDomain does not reject semicolons validateCookiePath already does at 0x3B, so a domain value like example.com; SameSite=None lands verbatim as Domain=example.com; SameSite=None. The unparsed array's loop only checks ea...

undici: Undici: Cookie attribute injection allows bypassing security protections

A flaw was found in undici, where its setCookie function does not fully sanitize cookie attributes. A remote attacker could exploit this by providing specially crafted input to the domain or unparsed fields, leading to the injection of additional cookie attributes. This vulnerability can allow an...

undici: Undici: Cookie attribute injection allows bypassing security protections

A flaw was found in undici, where its setCookie function does not fully sanitize cookie attributes. A remote attacker could exploit this by providing specially crafted input to the domain or unparsed fields, leading to the injection of additional cookie attributes. This vulnerability can allow an...

AZL-94443 CVE-2026-16729 affecting package nodejs 24.21.0-1

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-2026-56581: Sensitive Cookie in HTTPS Session Without 'Secure' Attribute

HCL MyCloud was affected with Cookie Attribute Path Not Set. It may increase the risk of unauthorized access to session data or authentication tokens...

CVE-2026-49977 tarteaucitron.js: data-cookie attribute can be used to delete arbitrary cookies

tarteaucitron.js is a compliant and accessible cookie banner. Prior to 1.33.0, tarteaucitron.cookie.purge is called on any element with the purgeBtn class and does not check whether the element is a legitimate tarteaucitron button or whether the cookie corresponds to a service handled by...

tarteaucitron: data-cookie attribute can be used to delete arbitrary cookies

Summary tarteaucitron provides a list of cookies and buttons to delete them. If an attacker can write HTML with data attributes, they could create an element that silently deletes a cookie when clicked and trick a user to delete this cookie. Details tarteaucitron.cookie.purge is called on any...