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

CWE-502

https://access.redhat.com/security/cve/CVE-2025-56005

https://bugzilla.redhat.com/show_bug.cgi?id=2431308

https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-56005.json

[{"vendor":"Red Hat","product":"Migration Toolkit for Containers","defaultStatus":"affected","cpes":["cpe:/a:redhat:rhmt:1"]},{"vendor":"Red Hat","product":"Migration Toolkit for Virtualization","defaultStatus":"affected","cpes":["cpe:/a:redhat:migration_toolkit_virtualization:2"]},{"vendor":"Red Hat","product":"OpenShift Developer Tools and Services","defaultStatus":"affected","cpes":["cpe:/a:redhat:ocp_tools"]},{"vendor":"Red Hat","product":"OpenShift Pipelines","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_pipelines:1"]},{"vendor":"Red Hat","product":"Red Hat Advanced Cluster Security 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:advanced_cluster_security:4"]},{"vendor":"Red Hat","product":"Red Hat Ceph Storage 7","defaultStatus":"affected","cpes":["cpe:/a:redhat:ceph_storage:7"]},{"vendor":"Red Hat","product":"Red Hat Ceph Storage 8","defaultStatus":"affected","cpes":["cpe:/a:redhat:ceph_storage:8"]},{"vendor":"Red Hat","product":"Red Hat Certification Program for Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/a:redhat:certifications:9"]},{"vendor":"Red Hat","product":"Red Hat Directory Server 13","defaultStatus":"affected","cpes":["cpe:/a:redhat:directory_server:13"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AI (RHEL AI) 3","defaultStatus":"affected","cpes":["cpe:/a:redhat:enterprise_linux_ai:3"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift GitOps","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_gitops:1"]},{"vend

{"timestamp":"2026-01-20T18:47:19.926886Z","id":"CVE-2025-56005","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]

disputed

An undocumented and unsafe feature in the PLY (Python Lex-Yacc) library 3.11 allows Remote Code Execution (RCE) via the `picklefile` parameter in the `yacc()` function. This parameter accepts a `.pkl` file that is deserialized with `pickle.load()` without validation. Because `pickle` allows execution of embedded code via `__reduce__()`, an attacker can achieve code execution by passing a malicious pickle file. The parameter is not mentioned in official documentation or the GitHub repository, yet it is active in the PyPI version. This introduces a stealthy backdoor and persistence risk.

An undocumented and unsafe feature in the PLY (Python Lex-Yacc) library 3.11 allows Remote Code Execution (RCE) via the `picklefile` parameter in the `yacc()` function. This parameter accepts a `.pkl` file that is deserialized with `pickle.load()` without validation. Because `pickle` allows execution of embedded code via `__reduce__()`, an attacker can achieve code execution by passing a malicious pickle file. The parameter is not mentioned in official documentation or the GitHub repository, yet it is active in the PyPI version. This introduces a stealthy backdoor and persistence risk. NOTE: A third-party states that this vulnerability should be rejected because the proof of concept does not demonstrate arbitrary code execution and fails to complete successfully.

https://github.com/tom025/ply_exploit_rejection/issues/1

http://www.openwall.com/lists/oss-security/2026/01/30/1

OR
          *cpe:2.3:a:dabeaz:ply:3.11:*:*:*:*:*:*:*

CVE: http://www.openwall.com/lists/oss-security/2026/01/23/4 Types: Exploit, Mailing List

CVE: http://www.openwall.com/lists/oss-security/2026/01/23/5 Types: Mailing List

CVE: http://www.openwall.com/lists/oss-security/2026/01/28/5 Types: Exploit, Mailing List

CVE: http://www.openwall.com/lists/oss-security/2026/01/29/1 Types: Exploit, Mailing List

CVE: http://www.openwall.com/lists/oss-security/2026/01/29/2 Types: Mailing List

MITRE: https://github.com/bohmiiidd/Undocumented-RCE-in-PLY Types: Exploit, Third Party Advisory

MITRE: https://github.com/bohmiiidd/Undocumument_RCE_PLY-yacc-CVE-2025-56005 Types: Exploit, Third Party Advisory

MITRE: https://github.com/tom025/ply_exploit_rejection Types: Exploit, Mitigation, Third Party Advisory

http://www.openwall.com/lists/oss-security/2026/01/29/2

http://www.openwall.com/lists/oss-security/2026/01/29/1

http://www.openwall.com/lists/oss-security/2026/01/28/5

https://github.com/bohmiiidd/Undocumument_RCE_PLY-yacc-CVE-2025-56005

https://github.com/tom025/ply_exploit_rejection

http://www.openwall.com/lists/oss-security/2026/01/23/5

http://www.openwall.com/lists/oss-security/2026/01/23/4

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

CWE-502

An undocumented and unsafe feature in the PLY (Python Lex-Yacc) library 3.11 allows Remote Code Execution (RCE) via the `picklefile` parameter in the `yacc()` function. This parameter accepts a `.pkl` file that is deserialized with `pickle.load()` without validation. Because `pickle` allows execution of embedded code via `__reduce__()`, an attacker can achieve code execution by passing a malicious pickle file. The parameter is not mentioned in official documentation or the GitHub repository, yet it is active in the PyPI version. This introduces a stealthy backdoor and persistence risk.

https://github.com/bohmiiidd/Undocumented-RCE-in-PLY