Denial of Service in uap-core when processing crafted User-Agent strings
Priority LOW 38Published · Updated
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub.
Summary
### Impact Some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. ### Patches Please update `uap-ruby` to >= v2.6.0 ### For more information https://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p Reported in `uap-core` by Ben Caller @bcaller
Why it matters now
Fix Fixed user_agent_parser (RubyGems): 2.6.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | user_agent_parser (RubyGems) | before 2.6.0 | 2.6.0 | Patch available | GHSA-pcqq-5962-hvcw |
- user_agent_parser (RubyGems) Vendor— Affected before 2.6.0 Fixed in 2.6.0 Patch available GHSA-pcqq-5962-hvcw
Remediation
- Fix · GHSA-pcqq-5962-hvcw user_agent_parser (RubyGems) Fixed in 2.6.0 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-pcqq-5962-hvcw
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences