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...

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 Perl_study_chunk

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

CVE-2026-13221 affects Perl versions through 5.43.9. When an alternation of more than 65,535 fixed-string branches is compiled into a trie in Perl_study_chunk, the 16‑bit delta between the first branch and the shared tail overflows. The trie’s match decision table is truncated with no warning, pr...

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...

CVE-2026-13221

Perl versions through 5.43.9 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 delta between the first branch and the shared tail is stored ...

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 Perl_study_chunk

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-2026-2651 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...

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...

PYSEC-2026-2489 Giskard has a Regular Expression Denial of Service (ReDoS) in RegexMatching Check

Summary The 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 tha...

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

SummaryMCPToolIndex.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...

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...

PT-2026-57822

Name of the Vulnerable Software and Affected Versions Perl versions prior to 5.44 Description Incorrect regular expression matches occur when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl study chunk. A trie is a specialized tree-like data structure used...

PT-2026-59094

A weakness has been identified in johnhuang316 code-index-mcp up to 2.14.0. Affected is the function is safe regex pattern of the component search code advanced. Executing a manipulation of the argument regex can lead to inefficient regular expression complexity. It is possible to launch the atta...

Linux Distros Unpatched Vulnerability : CVE-2026-13221

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

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-2026-59614

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...

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...

glib2: Fix of 4 CVEs

CVE-2026-58010: heap buffer over-read off-by-one in gvstupleisnormal in glib/gvariant-serialiser.c when checking untrusted tuple GVariant data for normal form - CVE-2026-58012: buffer over-read in gregexreplace/gregexreplaceeval when a GREGEXRAW match ends in a truncated multi-byte sequence and a...

MAL-2026-10136 Malicious code in transform-es2015-sticky-regex (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector eadf76ef8e123f9ce50c2910c71912996a3d079a91076ffed8d29830a1687ae1 package.json declares both a dependency and a devDependency on 'transform-es2015-sticky-regex' pointing at...

Malicious code in transform-es2015-sticky-regex (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector eadf76ef8e123f9ce50c2910c71912996a3d079a91076ffed8d29830a1687ae1 package.json declares both a dependency and a devDependency on 'transform-es2015-sticky-regex' pointing at...