path-to-regexp: path-to-regexp: Denial of Service via crafted regular expressions

A flaw was found in path-to-regexp. A remote attacker could exploit this vulnerability by providing specially crafted input that generates a regular expression with multiple sequential optional groups. This leads to an exponential growth in the generated regular expression, causing a Denial of...

GHSA-J3Q9-MXJG-W52F path-to-regexp vulnerable to Denial of Service via sequential optional groups

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...

path-to-regexp vulnerable to Denial of Service via sequential optional groups

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...

Regular Expression Denial of Service (ReDoS)

Overview Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS in route patterns. An attacker can cause resource exhaustion by supplying input with multiple sequential optional groups, leading to excessive computation and denial of service. Workaround This...

DEBIAN-CVE-2026-4926

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-2026-4926

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...

UBUNTU-CVE-2026-4926

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-2026-4926 path-to-regexp vulnerable to Denial of Service via sequential optional groups

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...

Linux Distros Unpatched Vulnerability : CVE-2026-4926

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

Design/Logic Flaw

Algorithmic complexity vulnerability in the java.util.regex.Pattern.compile method in Sun Java Development Kit JDK before 1.6, when used with spring.jar in SpringSource Spring Framework 1.1.0 through 2.5.6 and 3.0.0.M1 through 3.0.0.M2 and dm Server 1.0.0 through 1.0.2, allows remote attackers to...

CVE-2009-1190

Algorithmic complexity vulnerability in the java.util.regex.Pattern.compile method in Sun Java Development Kit JDK before 1.6, when used with spring.jar in SpringSource Spring Framework 1.1.0 through 2.5.6 and 3.0.0.M1 through 3.0.0.M2 and dm Server 1.0.0 through 1.0.2, allows remote attackers to...