CVE-2023-31698Public exploitNetwork attack vector

Browser script execution via unchecked SVG logo

Published May 17, 2023 · Updated Aug 2, 2024

Stored XSS in the site-logo upload in Bludit 3.14.1 allows remote authenticated users to run script in a visitor's browser. The admin logo-upload endpoint accepts an SVG based on its filename suffix without validating or neutralizing embedded active content. An administrator-granted account must upload the logo and a victim must open its URL; the claim is disputed because the product treats such users as trusted content authors.

CVSS severity5.4
Medium
EPSS probability2.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in the site-logo upload in Bludit 3.14.1 allows remote authenticated users to run script in a visitor's browser. The admin logo-upload endpoint accepts an SVG based on its filename suffix without validating or neutralizing embedded active content. An administrator-granted account must upload the logo and a victim must open its URL; the claim is disputed because the product treats such users as trusted content authors.

The record

CVE
CVE-2023-31698
Published
May 17, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 17, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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