The package ua-parser-js before 0.7.23 are vulnerable to Regular Expression Denial of Service (ReDoS) in multiple regexes (see linked commit for more info).
CVE-2020-7793
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(low)
- EPSS
- 89.0%
- KEV
- Not listed
Published
December 11, 2020
Last Modified
November 21, 2024
References (10)
- report@snykhttps://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
- report@snykhttps://github.com/faisalman/ua-parser-js/commit/6d1f26df051ba681463ef109d36c9cf0f7e32b18
- report@snykhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBFAISALMAN-1050388
- report@snykhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1050387
- report@snykhttps://snyk.io/vuln/SNYK-JS-UAPARSERJS-1023599
- af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf
- af854a3a-2127-422b-91ae-364da2661108https://github.com/faisalman/ua-parser-js/commit/6d1f26df051ba681463ef109d36c9cf0f7e32b18
- af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBFAISALMAN-1050388
- af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1050387
- af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-JS-UAPARSERJS-1023599
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| ua-parser-js | — | 0.7.23 | — |
Data Freshness Timeline
(refreshed 10× in last 7d / 45× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:25 UTCEPSS rescore
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- 2026-07-09 19:07 UTCEPSS rescore
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- 2026-06-25 13:48 UTCEPSS rescore
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- 2026-06-24 14:03 UTCEPSS rescore
- 2026-06-24 07:50 UTCOSV refresh
- 2026-06-23 21:31 UTCEPSS rescore
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- 2026-06-08 14:15 UTCEPSS rescore
- 2026-06-07 15:23 UTCEPSS rescore
- 2026-06-07 15:23 UTCEPSS rescore
- 2026-06-07 11:29 UTCOSV refresh
- 2026-06-06 13:46 UTCEPSS rescore
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- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-23 04:21 UTCEG score recompute
Frequently asked(5)
What is CVE-2020-7793?
When was CVE-2020-7793 disclosed?
Is CVE-2020-7793 actively exploited?
What is the CVSS score of CVE-2020-7793?
How do I remediate CVE-2020-7793?
Dependency Blast Radius
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