CVE-2021-23364
Regular Expression Denial of Service (ReDoS)
MEDIUM
5.3
CVSS Score
Published: April 28, 2021 at 03:35 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorBrowserslist
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Severity
MEDIUM5.3
Exploit prediction
EPSS 2%
Description
The package browserslist from 4.0.0 and before 4.16.5 are vulnerable to Regular Expression Denial of Service (ReDoS) during parsing of queries.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 4.16.5, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (5)
x_refsource_MISCBroken Link
Source: [email protected]
https://github.com/browserslist/browserslist/blob/e82f32d1d4100d6bc79ea0b6b6a2d281a561e33c/index.js%23L472-L474x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/browserslist/browserslist/commit/c091916910dfe0b5fd61caad96083c6709b02d98x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/browserslist/browserslist/pull/593x_refsource_MISCExploitPatchThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1277182x_refsource_MISCExploitPatchThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JS-BROWSERSLIST-1090194CVSS
5.3MEDIUMsnyk
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- LOW
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-1333
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