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MaaMCP CVE-2026-81847

| EUVDEUVD-2026-67298 LOW
Path Traversal (CWE-22)
2026-08-27 VulDB GHSA-gq99-8fvp-vvg9
2.0
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
2.0 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
vuln.today AI
5.5 MEDIUM

Network-reachable endpoint with low-privilege authentication required; UI:R maps CVSS 4.0 UI:P; no scope change; low CIA impact consistent with bounded path traversal.

3.1 AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

5
Severity Changed
Aug 28, 2026 - 00:22 NVD
MEDIUM LOW
CVSS changed
Aug 28, 2026 - 00:22 NVD
5.1 (MEDIUM) 2.0 (LOW)
Source Code Evidence Fetched
Aug 28, 2026 - 00:07 vuln.today
Analysis Generated
Aug 28, 2026 - 00:07 vuln.today
CVE Published
Aug 27, 2026 - 22:15 cve.org
MEDIUM 5.1

DescriptionCVE.org

A vulnerability was found in MAA-AI MaaMCP up to 1.1.1.dev6+g2e4a41287. The affected element is the function save_pipeline/load_pipeline of the file pipeline_tools.py. Performing a manipulation results in path traversal. The attack can be initiated remotely. The exploit has been made public and could be used. The patch is named c93ef45cba75295eba26d9ff1ffb9202a91c6150. To fix this issue, it is recommended to deploy a patch.

AnalysisAI

Path traversal in MAA-AI MaaMCP (versions up to 1.1.1.dev6+g2e4a41287) allows low-privileged remote users to read or write files outside the intended pipeline directory by supplying crafted path inputs to the save_pipeline and load_pipeline functions in pipeline_tools.py. Publicly available exploit code exists (referenced in GitHub issue #31), though no active exploitation has been confirmed by CISA KEV. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid low-privilege account on the MaaMCP service (PR:L per the CVSS 4.0 vector) and some form of passive user interaction (UI:P). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 5.1 (Medium) reflects a vulnerability with low complexity but meaningful mitigating prerequisites: low privileges are required (PR:L) and passive user interaction is needed (UI:P), ruling out unauthenticated mass exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the upstream fix by incorporating commit c93ef45cba75295eba26d9ff1ffb9202a91c6150, available at https://github.com/Zeeeepa/MaaMCP/commit/c93ef45cba75295eba26d9ff1ffb9202a91c6150. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-81847 vulnerability details – vuln.today

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