HOMEVULNERABILITIESCVE-2021-23631
HIGH

CVE-2021-23631

CWE-22Published: January 21, 2022· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

This affects all versions of package convert-svg-core; all versions of package convert-svg-to-png; all versions of package convert-svg-to-jpeg. Using a specially crafted SVG file, an attacker could read arbitrary files from the file system and then show the file content as a converted PNG file.

NVD Source

Technical Analysis

CVE-2021-23631 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

convert-svg-core_project1 product(s)
convert-svg-core
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://gist.github.com/legndery/a248350bb25b8502a03c2f407cedeb14
ADVISORYhttps://snyk.io/vuln/SNYK-JS-CONVERTSVGCORE-1582785
ADVISORYhttps://snyk.io/vuln/SNYK-JS-CONVERTSVGTOJPEG-2348245
ADVISORYhttps://snyk.io/vuln/SNYK-JS-CONVERTSVGTOPNG-2348244
ADVISORYhttps://gist.github.com/legndery/a248350bb25b8502a03c2f407cedeb14
ADVISORYhttps://snyk.io/vuln/SNYK-JS-CONVERTSVGCORE-1582785
ADVISORYhttps://snyk.io/vuln/SNYK-JS-CONVERTSVGTOJPEG-2348245
ADVISORYhttps://snyk.io/vuln/SNYK-JS-CONVERTSVGTOPNG-2348244

All References (8)

→
https://gist.github.com/legndery/a248350bb25b8502a03c2f407cedeb14Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JS-CONVERTSVGCORE-1582785Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JS-CONVERTSVGTOJPEG-2348245Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JS-CONVERTSVGTOPNG-2348244Exploit · Third Party Advisory
→
https://gist.github.com/legndery/a248350bb25b8502a03c2f407cedeb14Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JS-CONVERTSVGCORE-1582785Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JS-CONVERTSVGTOJPEG-2348245Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JS-CONVERTSVGTOPNG-2348244Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2021-23631
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-22
CISA KEVNo
Affected1 vendor(s)
PublishedJan 21, 2022

Related CVEs (CWE-22)

CVE-2011-3495
10.0
CVE-2025-64075
10.0
CVE-2025-58321
10.0
CVE-2025-54261
10.0
CVE-2010-5324
10.0
CVE-2025-69770
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-23631 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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