CVE-2020-5243: Uap-Core Project Uap-Core

High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days.

uap-core before 0.7.3 is vulnerable to a denial of service attack when processing crafted User-Agent strings. 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. This has been patched in uap-core 0.7.3.

Affected products

• Uap-Core Project Uap-Core: before 0.7.3 (fixed in 0.7.3)

Published 2020-02-21. Last modified 2026-06-17.