CVE-2025-62866Network attack vector

Unauthorized bulk alt-text generation via missing nonce

Published Dec 9, 2025 · Updated Apr 28, 2026

CSRF in Valerio Monti Auto Alt Text 2.5.2 and earlier allows remote attackers to trigger bulk alt-text generation via crafted requests. The handleAltTextBulkAction() handler accepts bulk-action requests without valid WordPress nonce verification. Exploitation requires an authenticated site administrator to open a malicious link or page, allowing unauthorized changes to image alt-text metadata.

CVSS severity4.3
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in Valerio Monti Auto Alt Text 2.5.2 and earlier allows remote attackers to trigger bulk alt-text generation via crafted requests. The handleAltTextBulkAction() handler accepts bulk-action requests without valid WordPress nonce verification. Exploitation requires an authenticated site administrator to open a malicious link or page, allowing unauthorized changes to image alt-text metadata.

The record

CVE
CVE-2025-62866
Published
Dec 9, 2025
Updated
Apr 28, 2026
Vendor
Valerio Monti
Product
Auto Alt Text
Classifications
CWE-352, CAPEC-62, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 9, 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 <=2.5.2 changes=[{"at":"2.5.3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Valerio Monti · Auto Alt Textversion=0 <=2.5.2 changes=[{"at":"2.5.3","status":"unaffected"}]

Published CVSS scores

4.3PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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)
CAPEC-62Cross Site Request Forgery
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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