Vulnerability in Ua-Parser-Js Project
CVE-2021-27292
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.034 (88.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000
Affected products
Public proof-of-concept exploits
References
- github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14 (Patch, Third Party Advisory)
- gist.github.com/b-c-ds/6941d80d6b4e694df4bc269493b7be76 (Exploit, Third Party Advisory)
- github.com/faisalman/ua-parser-js/commit/809439e20e273ce0d25c1d04e111dcf6011eb5… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27292?
- CVE-2021-27292 is a high-severity vulnerability in Ua-Parser-Js Project. CVSS score: 7.5/10. Published 2021-03-17.
- How severe is CVE-2021-27292?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-27292 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.