CVE-2025-9620Network attack vector

Stored script injection via missing integration nonce validation

Published Sep 11, 2025 · Updated Apr 8, 2026

CSRF in edsteep Seo Monster 3.3.3 and earlier allows remote attackers to inject stored scripts through a forged settings request. The check_integration() function accepts state-changing integration settings without correctly validating a WordPress nonce, allowing attacker-controlled script content to be saved. Exploitation requires an authenticated site administrator to submit the forged request, such as by clicking a malicious link; stored scripts then execute in later page views.

CVSS severity6.1
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in edsteep Seo Monster 3.3.3 and earlier allows remote attackers to inject stored scripts through a forged settings request. The check_integration() function accepts state-changing integration settings without correctly validating a WordPress nonce, allowing attacker-controlled script content to be saved. Exploitation requires an authenticated site administrator to submit the forged request, such as by clicking a malicious link; stored scripts then execute in later page views.

The record

CVE
CVE-2025-9620
Published
Sep 11, 2025
Updated
Apr 8, 2026
Vendor
edsteep
Product
Seo Monster
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=3.3.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

edsteep · Seo Monsterversion=0 <=3.3.3

Published CVSS scores

6.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001User Execution: Malicious Link

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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