CVE-2026-35063 PUBLISHED

Missing Authorization in OpenPLC_V3

Assigner: icscert
Reserved: 06.04.2026 Published: 09.04.2026 Updated: 09.04.2026

OpenPLC_V3 REST API endpoint checks for JWT presence but never verifies the caller's role. Any authenticated user with role=user can delete any other user, including administrators, by specifying their user ID or they can create new accounts with role=admin, escalating to full administrator access.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	OpenPLC_V3
Product	OpenPLC_V3
Versions	Default: unaffected Version All versions is affected

Workarounds

OpenPLC_v3 is now considered to be end of life. Users are recommended to upgrade to OpenPLC Runtime v4 ( https://github.com/autonomy-logic/openplc-runtime ).

Credits

Arad Inbar, Nir Somech, Ben Grinberg, Daniel Lubel, Erez Cohen, and Adiel Sol from DREAM finder

References

https://www.cisa.gov/news-events/ics-advisories/icsa-25-345-10

Problem Types

CWE-862: Missing Authorization CWE