CVE-2023-5458Public exploitNetwork attack vector

Stored XSS via unsanitized SVG uploads

Published Oct 31, 2023 · Updated Aug 2, 2024

Stored cross-site scripting in Ashikur Rahman's CITS Support plugin before 3.0 allows remote authenticated users to execute script via SVG uploads. The media-upload path accepts an SVG containing a script element without sanitizing the document, then serves the stored file so its payload runs when viewed. An Author account can plant the file, but another user must view the uploaded SVG; script execution occurs in that viewer's browser and can expose or modify data available to that session.

CVSS severity5.4
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Ashikur Rahman's CITS Support plugin before 3.0 allows remote authenticated users to execute script via SVG uploads. The media-upload path accepts an SVG containing a script element without sanitizing the document, then serves the stored file so its payload runs when viewed. An Author account can plant the file, but another user must view the uploaded SVG; script execution occurs in that viewer's browser and can expose or modify data available to that session.

The record

CVE
CVE-2023-5458
Published
Oct 31, 2023
Updated
Aug 2, 2024
Vendor
Ashikur Rahman
Product
CITS Support svg, webp Media and TTF,OTF File Upload, Use Custom Fonts
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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 <3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ashikur Rahman · CITS Support svg, webp Media and TTF,OTF File Upload, Use Custom Fontsversion=0 <3.0

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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