vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2021-3801

Inefficient Regular Expression Complexity in prismjs/prism

MEDIUM
6.5
CVSS Score
Published: September 15, 2021 at 12:40 PM UTC
Updated: June 17, 2026 at 04:05 AM UTC
1 product affected across 1 vendorPrism

Using prismjs/prism by prismjs?

Get instant alerts when new vulnerabilities affect prismjs/prism - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM6.5
Exploit prediction
EPSS 1%

Description

prism is vulnerable to Inefficient Regular Expression Complexity

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Prism· Prismjsnpm
95%
v ≤ 1.24.1v < 1.25.0
Affected range stops below 1.25.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/prismjs/prism/commit/0ff371bb4775a131634f47d0fe85794c547232f9
x_refsource_CONFIRMExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://huntr.dev/bounties/8c16ab31-6eb6-46d1-b9a4-387222fe1b8a

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-1333NVD-CWE-Other

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card