CVEvulnerability
CVE-2021-27292
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-03-17
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Description
ua-parser-js >= 0.7.14, fixed in 0.7.24, uses a regular expression which is vulnerable to denial of service. If an attacker sends a malicious User-Agent header, ua-parser-js will get stuck processing it for an extended period of time.
Affected configurations
• ua-parser-js project ua-parser-js (>= 0.7.14 < 0.7.24)
References
- https://gist.github.com/b-c-ds/6941d80d6b4e694df4bc269493b7be76 Exploit, Third Party Advisory
- https://github.com/faisalman/ua-parser-js/commit/809439e20e273ce0d25c1d04e111dcf6011eb566 Patch, Third Party Advisory
- https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14 Patch, Third Party Advisory
- https://gist.github.com/b-c-ds/6941d80d6b4e694df4bc269493b7be76 Exploit, Third Party Advisory
- https://github.com/faisalman/ua-parser-js/commit/809439e20e273ce0d25c1d04e111dcf6011eb566 Patch, Third Party Advisory
- https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14 Patch, Third Party Advisory