CVE-2020-5243

PoC —

CVSS 3.1

7.5 high

EPSS

2%p82

Published

Feb 21, 2020 (Feb 21, 2020)

Modified

Jun 17, 2026

Description

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.

Vendors: uap-core project
Products: uap-core
Weakness: CWE-20, CWE-1333
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (2.3%)

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