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CVE-2026-62677— Omnigent: Unvalidated os_env.cwd in agent bundle yields arbitrary host filesystem access on runners without OMNIGENT_RUNNER_WORKSPACE

Quick assessment

Affected
omnigent-ai omnigent
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Omnigent 是一个开源的 AI 代理框架和元测试平台，用于编排代码代理（coding agents）。在 0.3.0 版本之前，经过身份认证的用户可以上传一个会话作用域的代理包（agent bundle），其 值设置为绝对路径或包含路径遍历序列（如 ）。这是因为 会原样存储该值，而 并未对其进行任何限制。 在 环境变量未设置（或未定义）的运行器环境中， 会保留攻击者控制的恶意路径，并且 会将解析后的路径用作环境根目录和 （目录树复制）的源路径。随后， 检查机制会将该由攻击者选择的根目录视为可信，从而导致 、

CVSS 8.8 · High EPSS 0.45% · P37

Affected Version Matrix 1

VendorProduct Version RangeStatus
omnigent-ai omnigent < 0.3.0 affected
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I. Basic Information for CVE-2026-62677

Vulnerability Information
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Vulnerability Title
Omnigent: Unvalidated os_env.cwd in agent bundle yields arbitrary host filesystem access on runners without OMNIGENT_RUNNER_WORKSPACE
Source: CVE Program / CVE List V5
Vulnerability Description
Omnigent is an open-source AI agent framework and meta-harness for orchestrating coding agents. Prior to 0.3.0, an authenticated user can upload a session-scoped agent bundle with an absolute or traversal-containing os_env.cwd value because omnigent/spec/parser.py stores the value verbatim and omnigent/spec/validator.py does not constrain it. On a runner where OMNIGENT_RUNNER_WORKSPACE is unset, omnigent/runner/resource_registry.py preserves the attacker-controlled path and omnigent/inner/os_env.py uses the resolved path as the environment root and copytree source. The _assert_within_cwd check then treats that attacker-selected root as trusted, allowing sys_os_read, write, edit, and shell tools to access runner files and environment secrets outside the intended workspace. This issue is fixed in version 0.3.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
omnigent-ai omnigent < 0.3.0 -

II. Public POCs for CVE-2026-62677

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7752 chars
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III. Intelligence Information for CVE-2026-62677

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Patches & Fixes for CVE-2026-62677 (2)

Vendor Advisories for CVE-2026-62677 (1)

Vendor Pages for CVE-2026-62677 (1)

Same Patch Batch · omnigent-ai · 2026-08-21 · 4 CVEs total

CVE-2026-62674 9.0 CRITICAL Omnigent: Shared Agent Bundle Overwrite Leads to Authenticated Runner RCE
CVE-2026-62675 8.8 HIGH Omnigent: Uploaded Agent Bundle Allows Authenticated Runner RCE via Python Callable Tools
CVE-2026-62676 7.1 HIGH Omnigent Guardrail policy bypass: shell-command parser fails open in policies/builtins/_sh

IV. Related Vulnerabilities

Same product: omnigent
Same vendor: omnigent-ai
Same weakness: CWE-22

V. Comments for CVE-2026-62677

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