CVE-2025-31409Network attack vector

Contributor-level stored cross-site scripting

Published Apr 1, 2025 · Updated Apr 28, 2026

Stored cross-site scripting in NotFound Bridge Core before 3.3.1 allows remote authenticated users to inject scripts into WordPress pages. Patchstack has not disclosed the affected function, input field, or missing output-encoding operation that permits the stored payload. Contributor access is required to store a payload, and execution requires another user to view the affected content in a browser.

CVSS severity6.5
Medium
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

Stored cross-site scripting in NotFound Bridge Core before 3.3.1 allows remote authenticated users to inject scripts into WordPress pages. Patchstack has not disclosed the affected function, input field, or missing output-encoding operation that permits the stored payload. Contributor access is required to store a payload, and execution requires another user to view the affected content in a browser.

The record

CVE
CVE-2025-31409
Published
Apr 1, 2025
Updated
Apr 28, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, CAPEC-592, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 1, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1203Exploitation for Client Execution

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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