WordPress WPBase Cache plugin <= 5.5.6 - Denial of Service Attack vulnerability

published 2026-10-06 34 d ago modified 2026-10-06 34 d ago also EUVD-2026-93274

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits: 0; none known

Subscriber Denial of Service Attack in WPBase Cache <= 5.5.6 versions.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 34 d ago (2026-10-06)

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

baseapp WPBase Cache

Classification

Weakness

CWE-770 Allocation of Resources Without Limits or Throttling

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/wordpress/plugin/wpbase-cache/vulnerability/wordpress-wpbase-cache-plugin-5-5-6-denial-of-service-at
vdb-entry

Sources

CVE List CVE-2026-39767
NVD CVE-2026-39767

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary