CVE-2021-23424
Regular Expression Denial of Service (ReDoS)
HIGH
7.5
CVSS Score
Published: August 18, 2021 at 04:15 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorAnsi Html
Using ansi-html by N/A?
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Severity
HIGH7.5
Exploit prediction
EPSS 2%
Description
This affects all versions of package ansi-html. If an attacker provides a malicious string, it will get stuck processing the input for an extremely long time.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 0.0.8
Affected range stops below 0.0.8, 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 (3)
x_refsource_MISCExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://github.com/Tjatse/ansi-html/issues/19x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1567198x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JS-ANSIHTML-1296849CVSS
7.5HIGHsnyk
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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