CVE-2026-4923
MEDIUM5.9EPSS 0.02%path-to-regexp vulnerable to Regular Expression Denial of Service via multiple wildcards
發布日:2026/3/27修改日:2026/3/30
描述
### 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 /x/*a-:b/*c/y ``` **Safe examples:** ``` /*foo-:bar /*foo-:bar-*baz ``` ### Patches Upgrade to version `8.4.0`. ### Workarounds If developers are using multiple wildcard parameters, they can check the regex output with a tool such as https://makenowjust-labs.github.io/recheck/playground/ to confirm whether a path is vulnerable.
受影響套件(2)
- Debian/node-path-to-regexpfrom 0
- npm/path-to-regexp>= 8.0.0, < 8.4.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
參考連結(6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-4923
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-4923
- PATCHhttps://github.com/pillarjs/path-to-regexp
- WEBhttps://cna.openjsf.org/security-advisories.html
- WEBhttps://github.com/pillarjs/path-to-regexp/security/advisories/GHSA-27v5-c462-wpq7
- WEBhttps://makenowjust-labs.github.io/recheck/playground