CVE-2025-53925Public exploitNetwork attack vector

Stored XSS via unsanitized SVG cover upload

Published Jul 16, 2025 · Updated Jul 16, 2025

Stored XSS in emlog pro-2.5.17 and earlier allows remote authenticated users to inject script through SVG cover uploads. The upload_cover action accepts SVG content labeled as image/png and stores it for direct browser rendering without neutralizing embedded script. A registered account and a victim opening the uploaded URL are required; the script then executes in the victim's browser under the site's origin.

CVSS severity5.4
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Stored XSS in emlog pro-2.5.17 and earlier allows remote authenticated users to inject script through SVG cover uploads. The upload_cover action accepts SVG content labeled as image/png and stores it for direct browser rendering without neutralizing embedded script. A registered account and a victim opening the uploaded URL are required; the script then executes in the victim's browser under the site's origin.

The record

CVE
CVE-2025-53925
Published
Jul 16, 2025
Updated
Jul 16, 2025
Vendor
emlog
Product
emlog
Classifications
CWE-79, CWE-80, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= pro-2.5.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

emlog · emlogversion=<= pro-2.5.17

Published CVSS scores

5.4GitHub, Inc.CVSS: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')
CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
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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