CVE-2021-43309
ReDoS in uri-template-lite URI.expand function
HIGH
7.5
CVSS Score
Published: August 24, 2022 at 03:48 PM UTC
Updated: June 17, 2026 at 04:10 AM UTC
2 products affected across 2 vendorsUri Template LiteUri Template Lite
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Severity
HIGH7.5
Exploit prediction
EPSS 1.0%
Description
An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the uri-template-lite npm package, when an attacker is able to supply arbitrary input to the "URI.expand" method
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
All versions
v < 22.9.0
Affected range stops below 22.9.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (2)
x_refsource_MISC
Source: [email protected]
https://github.com/litejs/uri-template-lite/compare/v22.1.0...v22.9.0x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://research.jfrog.com/vulnerabilities/uri-template-lite-redos-xray-211351/CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-1333
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