OpenMAIC before 1.0.1 SSRF via Environment-Gated URL Validation

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-86259
StatePUBLISHED
AssignerVulnCheck
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-06 13:17:10 UTC
Updated2026-09-10 19:58:20 UTC
DescriptionOpenMAIC 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.

Risk And Classification

Primary CVSS: v4.0 9 CRITICAL from [email protected]

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.002540000 probability, percentile 0.169960000 (date 2026-09-10)

Problem Types: CWE-306 | CWE-918 | CWE-918 Server-Side Request Forgery (SSRF) | CWE-306 Missing Authentication for Critical Function

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary9CRITICALCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:N/SA:N/E:X/C...
4.0CNACVSS9CRITICALCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:N/SA:N
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
3.1CNACVSS7.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
Low
Availability
None
Sub Conf.
High
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA THU-MAIC OpenMAIC affected 1.0.1 semver Not specified
CNA THU-MAIC OpenMAIC unaffected 1.0.1 semver Not specified

References

ReferenceSourceLinkTags
www.vulncheck.com/advisories/openmaic-before-1.0.1-ssrf-via-environment-gated-u... [email protected] www.vulncheck.com
github.com/THU-MAIC/OpenMAIC/releases/tag/v1.0.1 [email protected] github.com
github.com/THU-MAIC/OpenMAIC/blob/v1.0.0/middleware.ts [email protected] github.com
github.com/THU-MAIC/OpenMAIC/blob/v1.0.0/app/api/generate/image/route.ts [email protected] github.com
github.com/THU-MAIC/OpenMAIC [email protected] github.com
github.com/THU-MAIC/OpenMAIC/security/advisories/GHSA-9m7h-vh2h-rc3w 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Tong Hoang Gia (en)

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