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Vulnerabilities

CVE-2026-31221

High ⚡ Exploit Available
CWE-502 — Weakness Type
Published: May 12, 2026  ·  Modified: May 19, 2026  ·  Source: NVD
CVSS v3
7.8
🔗 NVD Official
📄 Description (English)

PyTorch-Lightning versions 2.6.0 and earlier contain an insecure deserialization vulnerability (CWE-502) in the checkpoint loading mechanism. The LightningModule.load_from_checkpoint() method, which is commonly used to load saved model states, internally calls torch.load() without setting the security-restrictive weights_only=True parameter. This default behavior allows the deserialization of arbitrary Python objects via the Pickle module. A remote attacker can exploit this by providing a maliciously crafted checkpoint file, leading to arbitrary code execution on the victim's system when the file is loaded.

🤖 AI Executive Summary

PyTorch-Lightning versions 2.6.0 and earlier contain an insecure deserialization vulnerability in checkpoint loading that allows arbitrary code execution through maliciously crafted checkpoint files. Attackers can exploit the LightningModule.load_from_checkpoint() method which uses unsafe torch.load() without weights_only=True parameter.

📄 Description (Arabic)

تحتوي ثغرة CVE-2026-31221 على ضعف في آلية فك التسلسل غير الآمنة في PyTorch-Lightning حيث تستخدم دالة torch.load() بدون تفعيل معامل الأمان weights_only=True. يمكن للمهاجمين إنشاء ملفات نقاط تفتيش ضارة تحتوي على كائنات Python عشوائية يتم تنفيذها عند التحميل. هذا يؤدي إلى تنفيذ كود عشوائي كامل على أنظمة الضحايا.

🤖 ملخص تنفيذي (AI)

PyTorch-Lightning الإصدارات 2.6.0 وما قبلها تحتوي على ثغرة فك تسلسل غير آمنة في آلية تحميل نقاط التفتيش تسمح بتنفيذ كود عشوائي. يمكن للمهاجمين استغلال طريقة LightningModule.load_from_checkpoint() التي تستخدم torch.load() غير الآمنة.

🤖 AI Intelligence Analysis Analyzed: May 15, 2026 19:35
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
government banking energy telecom healthcare
⚖️ Saudi Risk Score (AI)
9.0
/ 10.0
🔧 Remediation Steps (English)
Upgrade PyTorch-Lightning to version 2.6.1 or later immediately. Implement strict file validation and integrity checks before loading checkpoint files. Restrict checkpoint file sources to trusted locations only. Monitor and log all checkpoint loading operations. Consider using sandboxed environments for model inference. Validate checkpoint file signatures using cryptographic methods.
🔧 خطوات المعالجة (العربية)
قم بترقية PyTorch-Lightning إلى الإصدار 2.6.1 أو أحدث فوراً. طبق التحقق الصارم من صحة الملفات قبل تحميل نقاط التفتيش. قيد مصادر ملفات نقاط التفتيش للمواقع الموثوقة فقط. راقب وسجل جميع عمليات تحميل نقاط التفتيش. استخدم بيئات معزولة لاستدلال النموذج. تحقق من توقيعات ملفات نقاط التفتيش باستخدام الطرق التشفيرية.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.7.1 A.7.2 A.12.2.1 A.14.2.1
🔵 SAMA CSF
ID.BE-1 PR.DS-1 PR.DS-2 DE.CM-1
🟡 ISO 27001:2022
A.6.1.1 A.12.2.1 A.12.4.1 A.14.2.1
📦 Affected Products / CPE 1 entries
lightningai:pytorch_lightning
📊 CVSS Score
7.8
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack VectorL — Low / Local
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionR — Required
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.8
CWECWE-502
EPSS0.19%
Exploit ✓ Yes
Patch ✗ No
Published 2026-05-12
Source Feed nvd
Views 1
🇸🇦 Saudi Risk Score
9.0
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
exploit-available CWE-502
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