CVE-2026-25100Known exploitationNetwork attack vector

Stored XSS via unsanitized SVG upload

Published Mar 27, 2026 · Updated Mar 27, 2026

Stored XSS in Bludit 3.18.2 and earlier allows remote authenticated users to execute JavaScript through an uploaded SVG image. The image upload path accepts SVG files containing active script and serves them as unauthenticated web resources without neutralizing the payload. Author, Editor, or Administrator upload rights are required, and execution occurs when a victim visits the uploaded file's URL.

CVSS severity4.8
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Bludit 3.18.2 and earlier allows remote authenticated users to execute JavaScript through an uploaded SVG image. The image upload path accepts SVG files containing active script and serves them as unauthenticated web resources without neutralizing the payload. Author, Editor, or Administrator upload rights are required, and execution occurs when a victim visits the uploaded file's URL.

The record

CVE
CVE-2026-25100
Published
Mar 27, 2026
Updated
Mar 27, 2026
Vendor
Bludit
Product
Bludit
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 2026Record 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 <=3.18.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Bludit · Bluditversion=0 <=3.18.2

Published CVSS scores

4.8CERT.PLCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
5.4NVDCVSS: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 exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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Reported exploitation

Technologies

Your stack

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Your stack

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