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CVE-2026-86259— OpenMAIC before 1.0.1 SSRF via Environment-Gated URL Validation

Quick assessment

Affected
THU-MAIC OpenMAIC
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.

OpenMAIC 在 1.0.1 之前，在非生产环境中会跳过服务端请求伪造（SSRF）验证，这使得未认证的 attacker 能够访问云实例元数据服务。攻击者可以通过 请求头或 参数提供任意云服务商的 URL，从而访问敏感的云凭据和元数据信息。

CVSS 7.5 · High

Affected Version Matrix 2

VendorProduct Version RangeStatus
THU-MAIC OpenMAIC < 1.0.1 affected
1.0.1 unaffected
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I. Basic Information for CVE-2026-86259

Vulnerability Information
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Vulnerability Title
OpenMAIC before 1.0.1 SSRF via Environment-Gated URL Validation
Source: CVE Program / CVE List V5
Vulnerability Description
OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds, allowing unauthenticated attackers to reach cloud instance metadata services. Attackers can supply arbitrary provider URLs via the x-base-url header or baseUrl parameter to access sensitive cloud credentials and metadata.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
THU-MAIC OpenMAIC 0 ~ 1.0.1 -

II. Public POCs for CVE-2026-86259

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III. Intelligence Information for CVE-2026-86259

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Patches & Fixes for CVE-2026-86259 (1)

Vendor Advisories for CVE-2026-86259 (2)

Vendor Pages for CVE-2026-86259 (1)

Other References for CVE-2026-86259 (1)

IV. Related Vulnerabilities

Same weakness: CWE-918

V. Comments for CVE-2026-86259

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