CVE-2024-34452Public exploitNetwork attack vector

Stored XSS via unsanitized SVG upload

Published Jun 21, 2024 · Updated Aug 2, 2024

Stored XSS in the SVG upload path in CMSimple_XH 1.7.6 allows remote attackers to execute script when a user opens the file. The upload path accepts and stores script-bearing SVG content without neutralizing its active elements, allowing the browser to execute the embedded script when the stored document is viewed. Exploitation requires a user to open the uploaded SVG; execution occurs in that user's browser within the site's security context.

CVSS severity6.1
Medium
EPSS probability0.71%
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 SVG upload path in CMSimple_XH 1.7.6 allows remote attackers to execute script when a user opens the file. The upload path accepts and stores script-bearing SVG content without neutralizing its active elements, allowing the browser to execute the embedded script when the stored document is viewed. Exploitation requires a user to open the uploaded SVG; execution occurs in that user's browser within the site's security context.

The record

CVE
CVE-2024-34452
Published
Jun 21, 2024
Updated
Aug 2, 2024
Vendor
CMSimple_XH
Product
CMSimple_XH
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 21, 2024CVE 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=1.7.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CMSimple_XH · CMSimple_XHversion=1.7.6

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:L

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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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