TillKit < 1.0.5 - Unauthenticated POS Takeover via Hard-Coded Default Manager PIN
Priority MEDIUM 41CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.
Summary
The TillKit WordPress plugin before 1.0.5 does not require the hard-coded, publicly known PIN of the privileged POS account it creates on activation to be changed before use, and it authenticates its public POS login endpoint on that PIN alone with no identity or capability check, allowing unauthenticated attackers to obtain a privileged POS session and thereby read customer and site-user personal data and modify store data.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00193 9th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed TillKit (Unknown): 1.0.5
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | TillKit | before 1.0.5 | 1.0.5 | Patch available | CNA |
- TillKit VendorUnknown Affected before 1.0.5 Fixed in 1.0.5 Patch available CNA
Remediation
- Fix · CNA TillKit (Unknown) Fixed in 1.0.5
Timeline
- 2026-10-03 Threatist record created from CVE-2026-91078
- 2026-10-03 Alias added: GHSA-mhjv-47jj-mxpp
- 2026-10-03 CVSS score added · CISA ADP
- 2026-10-03 Weakness changed · CISA ADP
- 2026-10-03 CISA SSVC decision points changed
- 2026-10-04 Priority changed: LOW → MEDIUM
References
Sources
- CVE-2026-91078 · CVE Program
- CVE-2026-91078 · NVD
- FIRST EPSS
- GHSA-mhjv-47jj-mxpp · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences