CVE-2024-27517Public exploitNetwork attack vector

Stored script execution via unfiltered blog icon URL

Published Feb 28, 2024 · Updated Aug 29, 2024

Stored cross-site scripting in Webasyst Framework 2.9.9 allows remote authenticated users to run script in an administrator's browser. The blogHelper.class.php renderer concatenates the unfiltered icon_url value into an HTML element, allowing input to terminate the attribute. Blog-creation permission and an administrator viewing blog management are required; the resulting script operates within the administrator session.

CVSS severity5.4
Medium
EPSS probability0.43%
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 Webasyst Framework 2.9.9 allows remote authenticated users to run script in an administrator's browser. The blogHelper.class.php renderer concatenates the unfiltered icon_url value into an HTML element, allowing input to terminate the attribute. Blog-creation permission and an administrator viewing blog management are required; the resulting script operates within the administrator session.

The record

CVE
CVE-2024-27517
Published
Feb 28, 2024
Updated
Aug 29, 2024
Vendor
Webasyst
Product
Webasyst Framework
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 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=2.9.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Webasyst · Webasyst Frameworkversion=2.9.9

Published CVSS scores

5.4CISA-ADPCVSS: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')
T1059.007JavaScript/JScript

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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