CVE-2025-51529Public exploitNetwork attack vector

Unauthenticated database exhaustion via unlimited consent writes

Published Aug 19, 2025 · Updated Jul 5, 2026

Incorrect access control in Cookies and Content Security Policy 2.29 and earlier allows remote attackers to exhaust database resources. The unauthenticated cacsp_insert_consent_data() AJAX handler accepts repeated POST requests and inserts a new consent row for each request without rate limiting or request authorization. When “Save proof of consent” is enabled, concurrent requests can rapidly grow the consent table and consume database CPU, disk I/O, and storage until service is interrupted.

CVSS severity5.3
Medium
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect access control in Cookies and Content Security Policy 2.29 and earlier allows remote attackers to exhaust database resources. The unauthenticated cacsp_insert_consent_data() AJAX handler accepts repeated POST requests and inserts a new consent row for each request without rate limiting or request authorization. When “Save proof of consent” is enabled, concurrent requests can rapidly grow the consent table and consume database CPU, disk I/O, and storage until service is interrupted.

The record

CVE
CVE-2025-51529
Published
Aug 19, 2025
Updated
Jul 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284, T1498.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 5, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 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 exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
T1498.003Application Exhaustion Flood

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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