CVE-2026-4923: Inefficient Regular Expression Complexity

Impact: When using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path. Unsafe examples: /foo-bar-:baz /a-:b-c-:d...

CVE-2026-4926: Uncontrolled Resource Consumption

Impact: A bad regular expression is generated any time you have multiple sequential optional groups curly brace syntax, such as abc:z. The generated regex grows exponentially with the number of groups, causing denial of service. Patches: Fixed in version 8.4.0. Workarounds: Limit the number of...

CVE-2026-4867: Inefficient Regular Expression Complexity

Impact: A bad regular expression is generated any time you have three or more parameters within a single segment, separated by something that is not a period .. For example, /:a-:b-:c or /:a-:b-:c-:d. The backtrack protection added in [email protected] only prevents ambiguity for two...

Regular Expression Denial of Service (ReDoS)

Overview Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS when processing crafted extglob patterns. An attacker can cause excessive CPU consumption and block the event loop by supplying crafted extglob patterns that trigger catastrophic backtracking i...

Picomatch has a ReDoS vulnerability via extglob quantifiers

Impact picomatch is vulnerable to Regular Expression Denial of Service ReDoS when processing crafted extglob patterns. Certain patterns using extglob quantifiers such as + and , especially when combined with overlapping alternatives or nested extglobs, are compiled into regular expressions that c...

Regular Expression Denial of Service (ReDoS)

Overview Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS when processing crafted extglob patterns. An attacker can cause excessive CPU consumption and block the event loop by supplying crafted extglob patterns that trigger catastrophic backtracking i...

GHSA-C2C7-RCM5-VVQJ Picomatch has a ReDoS vulnerability via extglob quantifiers

Impact picomatch is vulnerable to Regular Expression Denial of Service ReDoS when processing crafted extglob patterns. Certain patterns using extglob quantifiers such as + and , especially when combined with overlapping alternatives or nested extglobs, are compiled into regular expressions that c...

The vulnerability of the Python Markdown library’s extensions, specifically pymdown-extensions, arises from the use of a regular expression “c” with inefficient computational complexity. This allows attackers to trigger a denial-of-service attack.

The vulnerability of the pymdown-extensions extension for the Python Markdown library is related to the use of a regular expression with inefficient computational complexity. Exploiting this vulnerability could allow an attacker to cause service interruptions remotely...

PT-2026-28173

Name of the Vulnerable Software and Affected Versions Picomatch versions prior to 4.0.4 Picomatch versions prior to 3.0.2 Picomatch versions prior to 2.3.2 Description Picomatch, a JavaScript glob matcher, contains a flaw where specially crafted POSIX bracket expressions, such as :constructor:, c...

CVE-2026-23920

Host and event action script input is validated with a regex set by the administrator, but the validation runs in multiline mode. If ^ and $ anchors are used in user input validation, an injected newline lets authenticated users bypass the check and inject shell commands...

CVE-2026-23920

Host and event action script input is validated with a regex set by the administrator, but the validation runs in multiline mode. If ^ and $ anchors are used in user input validation, an injected newline lets authenticated users bypass the check and inject shell commands...

CVE-2026-23920 Host and event action script regex validation can be bypassed in certain situations, leading to potential command injection

Host and event action script input is validated with a regex set by the administrator, but the validation runs in multiline mode. If ^ and $ anchors are used in user input validation, an injected newline lets authenticated users bypass the check and inject shell commands...

CVE-2026-33418

DiceBear is an avatar library for designers and developers. Prior to version 9.4.2, the ensureSize function in @dicebear/converter used a regex-based approach to rewrite SVG width/height attributes, capping them at 2048px to prevent denial of service. This size capping could be bypassed by crafti...

Regular Expression Denial of Service (ReDoS)

Overview activesupport is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS in numbertodelimited in the NumberToDelimitedConverter. An attacker can cause...

The vulnerability in the Transformers/commands/chat.py script of the library allows a hacker to trigger a service failure.

The vulnerability in the Transformers/commands/chat.py library’s script is related to the use of a regular expression with inefficient computational complexity when processing the variable SETTINGRE. Exploiting this vulnerability could allow a malicious actor to cause service failures...

The vulnerability of the get_configuration_file() function in the Transformers library allows a hacker to trigger a denial-of-service attack.

The vulnerability of the getconfigurationfile function in the Transformers library is related to the use of a regular expression with inefficient computational complexity. Exploiting this vulnerability could allow an attacker to cause a service failure remotely...

The vulnerability of the get_imports() function in the Transformers library allows a hacker to trigger a service failure.

The vulnerability of the getimports function in the Transformers library is related to the use of a regular expression with inefficient computational complexity. Exploiting this vulnerability could allow an attacker to cause service failures...

CVE-2026-33418: Incorrect Regular Expression

DiceBear is an avatar library for designers and developers. Prior to version 9.4.2, the ensureSize function in @dicebear/converter used a regex-based approach to rewrite SVG width/height attributes, capping them at 2048px to prevent denial of service. This size capping could be bypassed by crafti...

CVE-2026-33169 Rails Active Support has a possible ReDoS vulnerability in number_to_delimited

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. NumberToDelimitedConverter uses a lookahead-based regular expression with gsub! to insert thousands delimiters. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, the interaction between th...

GHSA-CG4J-Q9V8-6V38 Rails Active Support has a possible ReDoS vulnerability in number_to_delimited

Impact NumberToDelimitedConverter used a regular expression with gsub! to insert thousands delimiters. This could produce quadratic time complexity on long digit strings. Releases The fixed releases are available at the normal locations. Credit This issue was responsibly reported by Hackerone...