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CVE-2026-94093— DLR-RM stable-baselines3 save_util.py VecNormalize.load deserialization

Quick assessment

Affected
DLR-RM stable-baselines3
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 DLR-RM stable-baselines3 中检测到一项安全漏洞，影响版本最高至 2.9.0。该漏洞影响 文件中的函数 、 和 。该漏洞可导致反序列化操作被恶意利用。攻击者可能远程发起此类攻击。利用方法已公开披露，因此存在被实际利用的风险。 在 v2.9.0 版本中，PyTorch 张量加载路径已通过启用 得到加固，但该加固措施随后在主分支中通过 PR #1913“临时修复：回退使用 weights_only=True 的加载方式”[已阻塞] 被撤销，以兼容 PyTorch 1.13。因此，即使在“安全”

CVSS 6.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-94093

Vulnerability Information
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Vulnerability Title
DLR-RM stable-baselines3 save_util.py VecNormalize.load deserialization
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in DLR-RM stable-baselines3 up to 2.9.0. This affects the function PPO.load/load_replay_buffer/VecNormalize.load of the file save_util.py. Such manipulation leads to deserialization. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. In v2.9.0 the PyTorch tensor load path is hardened (weights_only=True), but that hardening was later reverted on master via PR #1913 "Hotfix: revert loading with weights_only=True" [blocked] to fix PyTorch 1.13 compat - so even the one "safe" path is inconsistent across versions. #2281 was closed as a duplicate of #1831 since both are unsafe pickle deserialization - but #1831's fix (PR #41) only gated the Hugging Face Hub loader in the separate huggingface_sb3 package. This finding covers the core stable_baselines3 load APIs (PPO.load, load_replay_buffer, VecNormalize.load), which have no safe mode or gate and remained exploitable in v2.9.0 until the outstanding hardening (PR #2264) ships.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
DLR-RM stable-baselines3 2.0 cpe:2.3:a:dlr-rm:stable-baselines3:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-94093

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III. Intelligence Information for CVE-2026-94093

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Vendor Advisories for CVE-2026-94093 (1)

Other References for CVE-2026-94093 (1)

IV. Related Vulnerabilities

Same weakness: CWE-502

V. Comments for CVE-2026-94093

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