CVE-2026-48125

UAParser.js is a JavaScript library to detect browsers, operating systems, CPUs, and devices from user-agent data. From 2.0.1 until 2.0.10, a regular expression denial-of-service vulnerability exists when using the Client Hints API. By sending a crafted Sec-CH-UA-Model header to an application th...

EUVD-2026-44538

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.8.4, the CSS selector parser in soupsieve contains a regular expression vulnerable to catastrophic backtracking when processing an attribute selector with an unterminated quoted value in...

CVE-2026-49477

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.8.4, the CSS selector parser in soupsieve contains a regular expression vulnerable to catastrophic backtracking when processing an attribute selector with an unterminated quoted value in...

CVE-2026-49477 Soup Sieve: Regular Expression Denial of Service (ReDoS) in soupsieve Selector Parser

Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.8.4, the CSS selector parser in soupsieve contains a regular expression vulnerable to catastrophic backtracking when processing an attribute selector with an unterminated quoted value in...

CVE-2026-49477

Soup Sieve (CSS selector engine used by Beautiful Soup 4) Before 2.8.4 contains a regular-expression backtracking bug in soupsieve/css_parser.py (VALUE pattern) that enables catastrophic backtracking on unterminated quoted attribute values, causing CPU exhaustion and potential DoS when compiling ...

CVE-2026-45305 Symfony: YAML Parser ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, Symfony\Component\Yaml\Parser::cleanup used regular expressions with overlapping quantifiers for YAML directive, comment, and document marker cleanup,...

CVE-2026-45305

Summary of CVE-2026-45305 (Symfony YAML Parser ReDoS) Symfony’s YAML handling (Symfony\Component\Yaml\Parser::cleanup) can hang parsing crafted input due to the use of overlapping quantifiers in regular expressions for YAML directive, comment, and document marker cleanup. This is a client-side pa...

CVE-2026-45305 Symfony: YAML Parser ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, Symfony\Component\Yaml\Parser::cleanup used regular expressions with overlapping quantifiers for YAML directive, comment, and document marker cleanup,...

CVE-2026-45756

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 7.3.0-BETA1 until 7.4.12 and 8.0.12, the JsonPath component compiles attacker-controlled match and search filter patterns directly into pregmatch without a length cap, i-regexp restriction, or...

CVE-2026-45756

Summary (CVE-2026-45756) : The Symfony JsonPath component allows attacker-controlled regular expressions in the match() and search() filters to be compiled directly into PCRE without length or backtracking limits, enabling catastrophic backtracking (ReDoS) and denial of service. Affected are Symf...

CVE-2026-45756

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 7.3.0-BETA1 until 7.4.12 and 8.0.12, the JsonPath component compiles attacker-controlled match and search filter patterns directly into pregmatch without a length cap, i-regexp restriction, or...

CVE-2026-45756 Symfony: JsonPath Evaluates Attacker-Controlled Regular Expressions in match()/search() Without Limits — ReDoS

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 7.3.0-BETA1 until 7.4.12 and 8.0.12, the JsonPath component compiles attacker-controlled match and search filter patterns directly into pregmatch without a length cap, i-regexp restriction, or...

Soup Sieve: Regular Expression Denial of Service (ReDoS) via Selector Parser

SummaryThe CSS selector parser in soupsieve the CSS selector engine for Beautiful Soup 4 contains a regular expression vulnerable to catastrophic backtracking. When processing an attribute selector with an unterminated quoted value, the VALUE regex pattern in cssparser.py enters exponential...

PYSEC-2026-2651 Mistune has a ReDoS in LINK_TITLE_RE that allows denial of service via crafted Markdown input

Summary A ReDoS Regular Expression Denial of Service vulnerability in LINKTITLERE allows an attacker who can supply Markdown for parsing to cause denial of service. A crafted 58-byte Markdown document blocks the parser for approximately 6 seconds measured on Apple M2, Python 3.14.3, with...

EUVD-2026-43313

Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate the length and content of message attachment field values, which allows an authenticated attacker to cause a denial of service for all users in a channel via a post containing a specially crafted payload tha...

CVE-2026-6850

Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate the length and content of message attachment field values, which allows an authenticated attacker to cause a denial of service for all users in a channel via a post containing a specially crafted payload tha...

CVE-2026-6850 Crafted message attachment causes client-side denial of service via markdown parser regex backtracking in Mattermost

Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to validate the length and content of message attachment field values, which allows an authenticated attacker to cause a denial of service for all users in a channel via a post containing a specially crafted payload tha...

CVE-2026-6850

Mattermost is affected (versions 11.7.x <= 11.7.2, 11.6.x <= 11.6.4, 10.11.x

PT-2026-59691

Summary The CSS selector parser in soupsieve the CSS selector engine for Beautiful Soup 4 contains a regular expression vulnerable to catastrophic backtracking. When processing an attribute selector with an unterminated quoted value, the VALUE regex pattern in css parser.py enters exponential...

CVE-2026-57584

Phalcon is a high-performance, full-stack PHP framework. Prior to 5.15.0, every Phalcon MVC application built with a default router registers a built-in route whose compiled PCRE pattern contains the nested quantifier /., and the same construct is produced by the /:params placeholder and the CLI...