CVE-2025-23425Network attack vector

Unauthenticated victim-browser script execution

Published Mar 3, 2025 · Updated Apr 28, 2026

Reflected XSS in Marekkis Watermark 0.9.4 and earlier allows remote attackers to execute scripts via a crafted request. Patchstack has not disclosed the affected parameter, endpoint, or code path that reflects untrusted input into a generated page. Exploitation is unauthenticated but requires a victim to follow a malicious link or otherwise submit the crafted request, allowing script execution in that victim's browser.

CVSS severity7.1
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Marekkis Watermark 0.9.4 and earlier allows remote attackers to execute scripts via a crafted request. Patchstack has not disclosed the affected parameter, endpoint, or code path that reflects untrusted input into a generated page. Exploitation is unauthenticated but requires a victim to follow a malicious link or otherwise submit the crafted request, allowing script execution in that victim's browser.

The record

CVE
CVE-2025-23425
Published
Mar 3, 2025
Updated
Apr 28, 2026
Vendor
Marekki
Product
Marekkis Watermark
Classifications
CWE-79, CAPEC-591, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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 <=0.9.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Marekki · Marekkis Watermarkversion=0 <=0.9.4

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-591Reflected XSS
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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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