CVE-2026-91078 TillKit WordPress - Authentication Bypass

TillKit WordPress plugin < 1.0.5 contains a broken authentication caused by use of a hard-coded PIN for privileged POS account, letting unauthenticated attackers obtain privileged sessions to read and modify data, exploit requires no authentication.

CVSS base score 8.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.19% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Access Control, Information Disclosure, Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Published
3 October 2026
Updated
15 October 2026
Weakness
CWE-287

Vendor fix

Update to version 1.0.5 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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