ALPINE-CVE-2026-13221

Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perlstudychunk. When such branches are combined into a trie, the...

PYSEC-2026-3072 Soup Sieve: Regular Expression Denial of Service (ReDoS) via Selector Parser

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 cssparser.py enters exponential...

CVE-2026-13221

Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perlstudychunk. When such branches are combined into a trie, the...

Mistune has a ReDoS in LINK_TITLE_RE that allows denial of service via crafted Markdown input

SummaryA 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 exponenti...

Giskard has a Regular Expression Denial of Service (ReDoS) in RegexMatching Check

SummaryThe RegexMatching check in the giskard-checks package passes a user-supplied regular expression pattern directly to Python's re.search without any timeout, complexity guard, or pattern validation. An attacker who can control the regex pattern or the text being matched can craft inputs that...

PYSEC-2026-2907 PraisonAI Has ReDoS via Unvalidated User-Controlled Regex in MCPToolIndex.search_tools()

Summary MCPToolIndex.searchtools compiles a caller-supplied string directly as a Python regular expression with no validation, sanitization, or timeout. A crafted regex causes catastrophic backtracking in the re engine, blocking the Python thread for hundreds of seconds and causing a complete...

PYSEC-2026-2987 Pygments has Regular Expression Denial of Service (ReDoS) due to Inefficient Regex for GUID Matching

A security flaw has been discovered in pygments before 2.20.0. The impacted element is the function AdlLexer of the file pygments/lexers/archetype.py. The manipulation results in inefficient regular expression complexity. The attack is only possible with local access. The exploit has been release...

multipart vulnerable to ReDoS in `parse_options_header()`

SummaryThe parseoptionsheader function in multipart.py uses a regular expression with an ambiguous alternation, which can cause exponential backtracking ReDoS when parsing maliciously crafted HTTP or multipart segment headers. This can be abused for denial of service DoS attacks against web...

PYSEC-2026-2670 multipart vulnerable to ReDoS in `parse_options_header()`

Summary The parseoptionsheader function in multipart.py uses a regular expression with an ambiguous alternation, which can cause exponential backtracking ReDoS when parsing maliciously crafted HTTP or multipart segment headers. This can be abused for denial of service DoS attacks against web...

CVE-2026-13221: Integer Overflow or Wraparound

Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perlstudychunk. When such branches are combined into a trie, the...

CVE-2026-13221: Integer Overflow or Wraparound

Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perlstudychunk. When such branches are combined into a trie, the...

PT-2026-59318

Summary The parse options header function in multipart.py uses a regular expression with an ambiguous alternation, which can cause exponential backtracking ReDoS when parsing maliciously crafted HTTP or multipart segment headers. This can be abused for denial of service DoS attacks against web...

PT-2026-59301

Summary A ReDoS Regular Expression Denial of Service vulnerability in LINK TITLE RE 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...

PT-2026-59543

Summary MCPToolIndex.search tools compiles a caller-supplied string directly as a Python regular expression with no validation, sanitization, or timeout. A crafted regex causes catastrophic backtracking in the re engine, blocking the Python thread for hundreds of seconds and causing a complete...

Security Bulletin: Multiple Vulnerabilities in Minimatch bundled with IBM Fusion, IBM Fusion HCI, and IBM Fusion Content-Aware Storage

Summary IBM Fusion, IBM Fusion HCI, and IBM Fusion Content-Aware Storage include the minimatch library, which is susceptible to multiple Denial of Service DoS vulnerabilities due to algorithmic inefficiencies and catastrophic regular expression backtracking. A remote attacker could exploit these...

EUVD-2026-35181

YesWiki has Unsafe eval in its Formula Calculato, Leading to Remote Code Execution & Denial of Service...

YesWiki has Unsafe eval() in its Formula Calculato, Leading to Remote Code Execution & Denial of Service

Summary An unsafe execution vulnerability exists in the Bazar form field calculator CalcField.php of YesWiki. The application attempts to sanitize user-defined mathematical formulas using a complex recursive regular expression before passing them to the PHP eval function. This implementation is...

GHSA-PX5M-H76G-P7P8 YesWiki has Unsafe eval() in its Formula Calculato, Leading to Remote Code Execution & Denial of Service

Summary An unsafe execution vulnerability exists in the Bazar form field calculator CalcField.php of YesWiki. The application attempts to sanitize user-defined mathematical formulas using a complex recursive regular expression before passing them to the PHP eval function. This implementation is...

Regular Expression Denial of Service (ReDoS)

Overview Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS via the matches, matchesFull, and replaceMatches functions in FHIRPath expression evaluation. An attacker can exhaust system CPU resources by submitting specially crafted regular expressions th...

Regular Expression Denial of Service (ReDoS)

Overview Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS via the matches, matchesFull, and replaceMatches functions in FHIRPath expression evaluation. An attacker can exhaust system CPU resources by submitting specially crafted regular expressions th...