OpenPLC_V3 Cross-Site Request Forgery

published 2025-12-13 10 mo ago modified 2026-10-14 26 d ago also EUVD-2025-203181

cvss: 8.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits: 0; none known

OpenPLC_V3 is vulnerable to a cross-site request forgery (CSRF) attack due to the absence of proper CSRF validation. This issue allows an unauthenticated attacker to trick a logged-in administrator into visiting a maliciously crafted link, potentially enabling unauthorized modification of PLC settings or the upload of malicious programs which could lead to significant disruption or damage to connected systems.

Patch / fix

fixed in 1

OpenPLC_V3 OpenPLC_V3 pull request #310

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-345-10 updated 2026-04-09 cvss 8.0

OpenPLC_V3 (Update A)

OpenPLC_V3
affected: mitigation “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).” github.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 10 mo ago (2025-12-15)

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.0	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:H
CNA	4.0	7.0	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:H
CNA	4.0	7.0	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

OpenPLC_V3 OpenPLC_V3

Classification

Weakness

CWE-352 Cross-Site Request Forgery

References

Sources

CVE List CVE-2025-13970
NVD CVE-2025-13970

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary