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Medium 5.4Published Oct 24, 2026

CVE-2026-107887Advanced Twenty Seventeen <= 1.3.1 - Subscriber+ Site Theme Switch via ats_create_child_theme

Updated under an hour ago ()

Does this affect you?

It affects Unknown Advanced Twenty Seventeen. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

The Advanced Twenty Seventeen WordPress plugin through 1.3.1 does not perform any capability or nonce check on the action that creates and activates its bundled child , allowing any authenticated user such as a subscriber to switch the site's active site-wide, and allowing the same action to be triggered against any logged-in user including an administrator via CSRF.

CVSS
5.4 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Weakness (CWE)
CWE-862, CWE-352
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
WPScan
NVD analysis
Deferred
Record last updated
Oct 24, 2026
First seen by InfoSec Signals
Oct 24, 2026

Affected products

Affected products
Unknown Advanced Twenty Seventeen
unknown:advanced_twenty_seventeen (from the name)
through 1.3.1
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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