How severe is CVE-2026-40149?

CVE-2026-40149 has a CVSS 3.x base score of 7.9, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.

Is CVE-2026-40149 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40149?

CVE-2026-40149 affects Praison Praisonai. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40149?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-40149 have an EU (EUVD) identifier?

Yes. CVE-2026-40149 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21168.

When was CVE-2026-40149 published?

CVE-2026-40149 was published on 2026-04-09 and last updated on 2026-06-17.

CVE-2026-40149

CVE-2026-40149 is a high-severity vulnerability in Praison Praisonai with a CVSS 3.x base score of 7.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-396.

Key facts

Severity: High (CVSS 3.x base score 7.9)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21168
Weakness: CWE-396
Affected product: Praison Praisonai
Published: 2026-04-09
Last modified: 2026-06-17

Description

PraisonAI is a multi-agent teams system. Prior to 4.5.128, the gateway's /api/approval/allow-list endpoint permits unauthenticated modification of the tool approval allowlist when no auth_token is configured (the default). By adding dangerous tool names (e.g., shell_exec, file_write) to the allowlist, an attacker can cause the ExecApprovalManager to auto-approve all future agent invocations of those tools, bypassing the human-in-the-loop safety mechanism that the approval system is specifically designed to enforce. This vulnerability is fixed in 4.5.128.

Frequently asked questions

What is CVE-2026-40149?: PraisonAI is a multi-agent teams system. Prior to 4.5.128, the gateway's /api/approval/allow-list endpoint permits unauthenticated modification of the tool approval allowlist when no auth_token is configured (the default). By adding dangerous tool names (e.g., shell_exec, file_write) to the allowlist, an attacker can cause the ExecApprovalManager to auto-approve all future agent invocations of those tools, bypassing the human-in-the-loop safety mechanism that the approval system is specifically designed to enforce. This vulnerability is fixed in 4.5.128.
How severe is CVE-2026-40149?: CVE-2026-40149 has a CVSS 3.x base score of 7.9, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.
Is CVE-2026-40149 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40149?: CVE-2026-40149 affects Praison Praisonai. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40149?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-40149 have an EU (EUVD) identifier?: Yes. CVE-2026-40149 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21168.
When was CVE-2026-40149 published?: CVE-2026-40149 was published on 2026-04-09 and last updated on 2026-06-17.

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-4wr3-f4p3-5wjh

Affected products (1)

cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:*

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