CVE-2021-29059
HIGH
7.5
CVSS Score
Published: June 21, 2021 at 03:49 PM UTC
Updated: June 17, 2026 at 03:47 AM UTC
1 product affected across 1 vendorIs Svg
Using N/A by N/A?
Get instant alerts when new vulnerabilities affect N/A - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 3%
Description
A vulnerability was discovered in IS-SVG version 2.1.0 to 4.2.2 and below where a Regular Expression Denial of Service (ReDOS) occurs if the application is provided and checks a crafted invalid SVG string.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
95%
2.1.0 ≤ v < 4.3.0
Affected range stops below 4.3.0, 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:
Patch and advisory references
References (4)
x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/sindresorhus/is-svg/releases/tag/v4.3.0x_refsource_MISCExploitPatchThird Party Advisory
Source: [email protected]
https://github.com/yetingli/PoCs/blob/main/CVE-2021-29059/IS-SVG.mdx_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/yetingli/SaveResults/blob/main/js/is-svg.jsCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-770
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.
Free plan, no card