Vulnerability in Wpbot

CVE-2026-87918

The WPBot WordPress plugin before 8.5.7 does not perform any authorization or nonce check on several AJAX actions that relay prompts to its configured AI providers, allowing unauthenticated attackers to make those third-party API calls, and consume the associated cost, using the site's own configured API keys.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (25.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-87918: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

  • Wpbot

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-87918?
CVE-2026-87918 is a medium-severity vulnerability in Wpbot, classified under Improper Access Control. CVSS score: 5.3/10. Published 2026-09-12.
How severe is CVE-2026-87918?
Medium severity. CVSS v3 base score is 5.3 out of 10.