CVE-2021-23631Public exploitNetwork attack vector

Local file disclosure via file URL iframe rendering

Published Jan 21, 2022 · Updated Sep 16, 2024

Path traversal in Neocotic convert-svg-core, convert-svg-to-png, and convert-svg-to-jpeg before 0.6.0 allows remote attackers to read local files. The converter passes SVG markup containing file URL iframe references to headless Chromium and captures the rendered page as an image without blocking local-resource loads. Exploitation requires an application to convert attacker-controlled SVG content; files readable by the conversion process can appear in the returned PNG or JPEG.

CVSS severity7.5
High
EPSS probability1.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Neocotic convert-svg-core, convert-svg-to-png, and convert-svg-to-jpeg before 0.6.0 allows remote attackers to read local files. The converter passes SVG markup containing file URL iframe references to headless Chromium and captures the rendered page as an image without blocking local-resource loads. Exploitation requires an application to convert attacker-controlled SVG content; files readable by the conversion process can appear in the returned PNG or JPEG.

The record

CVE
CVE-2021-23631
Published
Jan 21, 2022
Updated
Sep 16, 2024
Vendor
Neocotic
Product
convert-svg-to-jpeg
Classifications
CWE-22, CAPEC-126, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <unspecified

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Neocotic · convert-svg-to-jpegversion=0 <unspecified
Neocotic · convert-svg-to-pngversion=0 <unspecified
Neocotic · convert-svg-coreversion=0 <unspecified

Published CVSS scores

7.5SnykCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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