{"id":"CVE-2020-5243","details":"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.","aliases":["GHSA-cmcx-xhr8-3w9p"],"modified":"2026-07-09T10:52:45.969449Z","published":"2020-02-21T00:15:10.960Z","references":[{"type":"FIX","url":"https://github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1"},{"type":"EVIDENCE","url":"https://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ua-parser/uap-core","events":[{"introduced":"0"},{"fixed":"e5abfd12fc8ddf14d2aa28cb8d36234ca7320e7c"},{"fixed":"0afd61ed85396a3b5316f18bfd1edfaadf8e88e1"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.7.3"}],"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:uap-core_project:uap-core:*:*:*:*:*:node.js:*:*"}}],"versions":["v0.6.11","v0.7.2","v0.7.1","v0.7.0","v0.6.9","v0.6.8","v0.6.7","v0.6.6","v0.6.5","v0.6.4","v0.6.3","v0.6.2","v0.6.1","v0.6.0","v0.3.4","php-3.3","java-1.3.0","java-1.2.2","v0.3.2","v0.3.1","v0.3.0","v0.2.4","v0.2.3","v0.2.2","v0.2.1","v0.2.0","v0.1.1","v0.1.0","semver"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-5243.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}