CVE-2025-23826Network attack vector

Stored XSS via unverified settings request

Published Jan 16, 2025 · Updated May 12, 2026

Stored XSS in Predrag Supurović Stop Comment Spam 0.5.3 and earlier allows remote attackers to persist scripts via forged settings requests. A settings-update function accepts administrator-context form data without valid nonce verification, then stores attacker-supplied script content. Exploitation requires an authenticated administrator to visit a crafted page; the stored script then runs for subsequent viewers.

CVSS severity7.1
High
EPSS probability0.41%
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 Predrag Supurović Stop Comment Spam 0.5.3 and earlier allows remote attackers to persist scripts via forged settings requests. A settings-update function accepts administrator-context form data without valid nonce verification, then stores attacker-supplied script content. Exploitation requires an authenticated administrator to visit a crafted page; the stored script then runs for subsequent viewers.

The record

CVE
CVE-2025-23826
Published
Jan 16, 2025
Updated
May 12, 2026
Vendor
Predrag Supurović
Product
Stop Comment Spam
Classifications
CWE-79, CAPEC-592, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 16, 2025CVE publishedPublication date reported by the CVE source.
  2. May 12, 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 <=0.5.3 changes=[{"at":"0.5.4","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Predrag Supurović · Stop Comment Spamversion=0 <=0.5.3 changes=[{"at":"0.5.4","status":"unaffected"}]

Published CVSS scores

6.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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-592Stored 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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