CVE-2026-6393Network attack vector

Paid AI quota consumption via nonce-only authorization

Published Apr 24, 2026 · Updated Apr 24, 2026

Missing authorization in BetterDocs 4.3.11 and earlier allows remote authenticated users to consume the site's paid OpenAI API quota. The generate_openai_content_callback() function accepts a valid nonce as sufficient authorization and forwards arbitrary prompt text with the configured site key. Subscriber-level access and a retrievable nonce are enough to initiate chargeable requests, without disclosing the key or granting broader site control.

CVSS severity4.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing authorization in BetterDocs 4.3.11 and earlier allows remote authenticated users to consume the site's paid OpenAI API quota. The generate_openai_content_callback() function accepts a valid nonce as sufficient authorization and forwards arbitrary prompt text with the configured site key. Subscriber-level access and a retrievable nonce are enough to initiate chargeable requests, without disclosing the key or granting broader site control.

The record

CVE
CVE-2026-6393
Published
Apr 24, 2026
Updated
Apr 24, 2026
Vendor
ReviewX Team
Product
BetterDocs
Classifications
CWE-862, T1496
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=4.3.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ReviewX Team · BetterDocsversion=0 <=4.3.11

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 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-862Missing Authorization
T1496Resource Hijacking

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo