Useragent is used to parse useragent headers. It uses several regular expressions to accomplish this. An attacker could edit their own headers, creating an arbitrarily long useragent string, causing the event loop and server to block. This affects Useragent 2.1.12 and earlier.
Product
useragent project useragent vulnerabilities
1 published CVE affecting useragent project useragent, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 1
- Critical
- 0
- High
- 1
- Medium
- 0
- Low
- 0
- Unscored
- 0
- CISA KEV
- 0
Latest useragent project useragent CVEs
Newest publication first
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HighCVSS 7.5
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.