CVE-2026-47413: praisonai-platform: Any workspace member can add arbitrary user as owner via POST /workspaces/{id}/members

Should you act?

Critical, preconditions apply

Severe if exploited, but exploitation needs conditions that may not apply to you. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• Not in CISA KEV, but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
• EPSS 0.4%, percentile 29: FIRST’s model estimates a 0.4% chance of exploitation activity in the next 30 days, higher than 29% of all scored CVEs (low). EPSS is a probability, not a verdict.
• Needs an account (low (any account)). Exposure depends on who can log in.
• Only applies if your dependency tree includes praisonai-platform (PyPI) < 0.1.4, fixed in 0.1.4. Check your lockfile, including transitive dependencies.

What it is

PraisonAI Platform is the platform layer for the PraisonAI multi-agent teams system. Versions prior to 0.1.4 have aprivilege escalation / cross-tenant member injection. The POST /workspaces/{workspaceid}/members endpoint is gated only by requireworkspacemember(workspaceid) (default minrole="member") and forwards the request body's userid and role straight into MemberService.add(workspaceid, userid, role), which has no caller-permission check. A user with the lowest workspace privilege can add any user (including a new attacker-controlled second account, or an existing account they want to grief) as owner of the workspace. PraisonAI Platform version 0.1.4 patches the issue.

From the GitHub advisory

Summary

Type: Privilege escalation / cross-tenant member injection. The POST /workspaces/{workspaceid}/members endpoint is gated only by requireworkspacemember(workspaceid) (default minrole="member") and forwards the request body's userid and role straight into MemberService.add(workspaceid, userid, role), which has no caller-permission check. A user with the lowest workspace privilege can add any user (including a new attacker-controlled second account, or an existing account they want to grief) as owner of the workspace. File: src/praisonai-platform/praisonaiplatform/api/routes/workspaces.py, lines 92-101; services/memberservice.py, lines 26-38. Root cause: MemberService.add validates only that role is in VALIDROLES = {"owner", "admin", "member"} — the value, not the caller's right to assign it. The route's Depends(requireworkspacemember) resolves to the default minrole="member". So a member-level token plus one POST gives the attacker an alternate identity with owner role inside the same workspace, bypassing every owner-only operation that would otherwise gate them.

Affected Code

File 1: src/praisonai-platform/praisonaiplatform/api/routes/workspaces.py, lines 92-101.

File 2: src/praisonai-platform/praisonaiplatform/services/memberservice.py, lines 26-38.

Weakness type: CWE-269, CWE-862.

Product: praisonai-platform (PyPI) · Assigned by: GitHub_M · Published: 2026-07-21

Affected and fixed versions

Severity scores

• Attack vector: network (remotely reachable)
• Attack complexity: low
• Privileges required: low (any account)
• User interaction: none
• Scope: changed (can affect other components)

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
• CISA SSVC assessment: exploitation poc, automatable no, technical impact total.
• FIRST EPSS (model of 2026-10-21): 0.36% probability of exploitation activity in the next 30 days; percentile 29.

Timeline

• 2026-06-01 — GitHub-reviewed advisory GHSA-8g2p-pqm3-fcfh published (critical)
• 2026-07-21 — CVE record published by GitHub_M
• 2026-07-22 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vulnerability records

1. GitHub Advisory GHSA-8g2p-pqm3-fcfh github.com
2. CVE.org record CVE-2026-47413 cve.org
3. NVD entry CVE-2026-47413 nvd.nist.gov

Other references from the CVE record and advisory

1. github.com github.com
2. github.com github.com

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