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...

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...

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...