CVE-2026-35063

8.7 highEPSS 0.2%

High (8.7) in openplcproject openplc v3 firmware. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.7 high

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 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 15% of CVEs (scores of 2026-10-31)
CWE: CWE-862
Published: 2026-04-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

openplcproject:openplc_v3_firmware

References

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

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