CVE-2025-4133Public exploitNetwork attack vector

Stored XSS via unescaped dashboard post titles

Published May 22, 2025 · Updated May 22, 2025

Stored XSS in Blog2Social before 8.4.0 allows remote authenticated users to execute script in an administrator's browser via a post title. The plugin's All Posts dashboard renders contributor-controlled WordPress post titles without output escaping. Contributor access is sufficient to store a payload, but execution requires a victim to open Blog2Social's All Posts page; the script runs in that user's browser context.

CVSS severity5.4
Medium
EPSS probability0.27%
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 Blog2Social before 8.4.0 allows remote authenticated users to execute script in an administrator's browser via a post title. The plugin's All Posts dashboard renders contributor-controlled WordPress post titles without output escaping. Contributor access is sufficient to store a payload, but execution requires a victim to open Blog2Social's All Posts page; the script runs in that user's browser context.

The record

CVE
CVE-2025-4133
Published
May 22, 2025
Updated
May 22, 2025
Vendor
Adenion GmbH
Product
Blog2Social
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 22, 2025CVE publishedPublication date reported by the CVE source.
  2. May 22, 2025Record 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 <8.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Adenion GmbH · Blog2Socialversion=0 <8.4.0

Published CVSS scores

5.4NVDCVSS:3.0/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059.007JavaScript/JScript

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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