CVE-2026-88020 Improper Neutralization of Input During Web Page Generation in OpenPLC Runtime v3

Autonomy Logic OpenPLC 3 is susceptible to an improper neutralization of input during web page generation vulnerability when the web interface attempts to route the program based on a query string parameter with no encoding...

OpenPLC Runtime v3

ADVISORY SUMMARY Successful exploitation of this vulnerability could allow an attacker to hijack session cookies and issue state-changing requests as an operator which would allow the attacker to control the programmable logic controller and the physical processes it drives. 2. RECOMMENDED...

CVE-2026-88020: Improper Neutralization of Input During Web Page Generation

Autonomy Logic OpenPLC 3 is susceptible to an improper neutralization of input during web page generation vulnerability when the web interface attempts to route the program based on a query string parameter with no encoding...

PT-2026-97042

Name of the Vulnerable Software and Affected Versions Autonomy Logic OpenPLC version 3 Description An improper neutralization of input during web page generation occurs in the web interface when routing programs based on a query string parameter that is not encoded. This cross-site scripting XSS...

CVE-2026-71268

OpenPLC Runtime v3's compileprogram function webserver/openplc.py parses directives from uploaded Structured Text .st program files and writes the referenced content to with no validation that filepath stays within the ./core directory. A path-validation function, validatefilepath, exists elsewhe...

CVE-2026-71268

OpenPLC Runtime v3 is affected by a path traversal in compile_program() (webserver/openplc.py): it processes directives of the form (FILE:path content ) and writes to os.path.join('./core', file_path) without validating that file_path stays under ./core. A crafted ST file like (FILE:../../../etc/...

CVE-2026-71268

OpenPLC Runtime v3's compileprogram function webserver/openplc.py parses directives from uploaded Structured Text .st program files and writes the referenced content to with no validation that filepath stays within the ./core directory. A path-validation function, validatefilepath, exists elsewhe...

EUVD-2026-53353

OpenPLC Runtime v3's compileprogram function webserver/openplc.py parses FILE:path content directives from uploaded Structured Text .st program files and writes the referenced content to os.path.join'./core', filepath with no validation that filepath stays within the ./core directory. A crafted ....

CVE-2026-71268 OpenPLC Runtime v3 Path Traversal in Structured Text FILE Directive Leading to Arbitrary File Write

OpenPLC Runtime v3's compileprogram function webserver/openplc.py parses directives from uploaded Structured Text .st program files and writes the referenced content to with no validation that filepath stays within the ./core directory. A path-validation function, validatefilepath, exists elsewhe...

CVE-2026-71268 OpenPLC Runtime v3 Path Traversal in Structured Text FILE Directive Leading to Arbitrary File Write

OpenPLC Runtime v3's compileprogram function webserver/openplc.py parses directives from uploaded Structured Text .st program files and writes the referenced content to with no validation that filepath stays within the ./core directory. A path-validation function, validatefilepath, exists elsewhe...

CVE-2026-71268: Improper Limitation of a Pathname to a Restricted Directory

OpenPLC Runtime v3's compileprogram function webserver/openplc.py parses directives from uploaded Structured Text .st program files and writes the referenced content to with no validation that filepath stays within the ./core directory. A path-validation function, validatefilepath, exists elsewhe...

CVE-2026-11826

OpenPLCv3 contains a heap-based buffer overflow in the getData function in webserver/core/modbusmaster.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...

CVE-2026-11826 OpenPLC_v3 Heap-Based Buffer Overflow in Modbus Master getData()

OpenPLCv3 contains a heap-based buffer overflow in the getData function in webserver/core/modbusmaster.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...

CVE-2026-11826 OpenPLC_v3 Heap-Based Buffer Overflow in Modbus Master getData()

OpenPLCv3 contains a heap-based buffer overflow in the getData function in webserver/core/modbusmaster.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...

CVE-2026-11826

OpenPLC_v3 has a heap-based buffer overflow in getData() within webserver/core/modbus_master.cpp. getData() copies data between delimiters into a caller-supplied buffer without size/bounds checks. parseConfig() uses a 100-byte heap-allocated MB_device.dev_name; an authenticated user can POST an o...

CVE-2026-11826

OpenPLCv3 contains a heap-based buffer overflow in the getData function in webserver/core/modbusmaster.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...

EUVD-2026-45380

OpenPLCv3 contains a heap-based buffer overflow in the getData function in webserver/core/modbusmaster.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...

PT-2026-60966

OpenPLC v3 contains a heap-based buffer overflow in the getData function in webserver/core/modbus master.cpp. getData reads characters between two delimiters into a caller-supplied buffer with no size parameter and no bounds check. In parseConfig the function is invoked with the 100-byte...

EUVD-2026-43116

OpenPLC Runtime v3 contains an authenticated arbitrary file write vulnerability in the legacy web UI program‑upload workflow. The application stores an attacker‑supplied filename progfile directly into the Programs.File database field and later uses this value as the destination path for an...

CVE-2026-14480

OpenPLC Runtime v3 contains an authenticated arbitrary file write vulnerability in the legacy web UI program‑upload workflow. The application stores an attacker‑supplied filename progfile directly into the Programs.File database field and later uses this value as the destination path for an...