SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityDeferred

CVE-2026-56092

The extension forces empty frontend-group and subpage-inheritance restrictions onto page records during indexer sub-requests, and this forged state was persisted into the shared rootline cache, allowing anonymous visitors to bypass…

HIGH 7.6EPSS 0.22%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The extension forces empty frontend-group and subpage-inheritance restrictions onto page records during indexer sub-requests, and this forged state was persisted into the shared rootline cache, allowing anonymous visitors to bypass extendToSubpages-inherited access restrictions on cached pages.

CVSS 4.0
7.6 HIGHCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS
0.22% probability · 13th percentile
CISA KEV
Not listed
Weakness
CWE-862
Source
f4fb688c-4412-4426-b4b8-421ecf27b14a

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.