How severe is CVE-2026-34938?

CVE-2026-34938 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-34938 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34938?

CVE-2026-34938 affects Praison Praisonaiagents. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34938?

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

Does CVE-2026-34938 have an EU (EUVD) identifier?

Yes. CVE-2026-34938 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18919.

When was CVE-2026-34938 published?

CVE-2026-34938 was published on 2026-04-03 and last updated on 2026-06-17.

CVE-2026-34938

CVE-2026-34938 is a critical-severity vulnerability in Praison Praisonaiagents with a CVSS 3.x base score of 10.0. 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-693.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18919
Weakness: CWE-693
Affected product: Praison Praisonaiagents
Published: 2026-04-03
Last modified: 2026-06-17

Description

PraisonAI is a multi-agent teams system. Prior to version 1.5.90, execute_code() in praisonai-agents runs attacker-controlled Python inside a three-layer sandbox that can be fully bypassed by passing a str subclass with an overridden startswith() method to the _safe_getattr wrapper, achieving arbitrary OS command execution on the host. This issue has been patched in version 1.5.90.

Frequently asked questions

What is CVE-2026-34938?: PraisonAI is a multi-agent teams system. Prior to version 1.5.90, execute_code() in praisonai-agents runs attacker-controlled Python inside a three-layer sandbox that can be fully bypassed by passing a str subclass with an overridden startswith() method to the _safe_getattr wrapper, achieving arbitrary OS command execution on the host. This issue has been patched in version 1.5.90.
How severe is CVE-2026-34938?: CVE-2026-34938 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-34938 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34938?: CVE-2026-34938 affects Praison Praisonaiagents. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34938?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-34938 have an EU (EUVD) identifier?: Yes. CVE-2026-34938 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18919.
When was CVE-2026-34938 published?: CVE-2026-34938 was published on 2026-04-03 and last updated on 2026-06-17.

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-6vh2-h83c-9294

Affected products (1)

cpe:2.3:a:praison:praisonaiagents:*:*:*:*:*:*:*:*

More vulnerabilities in Praison Praisonaiagents

CVE-2026-44335 — Critical (CVSS 9.8): PraisonAI is a multi-agent teams system. Prior to version 1.6.32, the URL checking logic in PraisonAI has a logical…
CVE-2026-40288 — Critical (CVSS 9.8): PraisonAI is a multi-agent teams system. In versions below 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents, the…
CVE-2026-40289 — Critical (CVSS 9.1): PraisonAI is a multi-agent teams system. In versions below 4.5.139 of PraisonAI and 1.5.140 of praisonaiagents, the…
CVE-2026-40111 — High (CVSS 8.8): PraisonAIAgents is a multi-agent teams system. Prior to 1.5.128, he memory hooks executor in praisonaiagents passes a…
CVE-2026-44339 — High (CVSS 8.6): PraisonAI is a multi-agent teams system. Prior to praisonai version 4.6.37 and praisonaiagents version 1.6.37,…
CVE-2026-34954 — High (CVSS 8.6): PraisonAI is a multi-agent teams system. Prior to version 1.5.95, FileTools.download_file() in praisonaiagents…

All CVEs affecting Praison Praisonaiagents →

Other CWE-693 (Protection Mechanism Failure) vulnerabilities

CVE-2026-47140 — Critical (CVSS 10.0): vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM blocks several dangerous Node.js builtins…
CVE-2026-34208 — Critical (CVSS 10.0): SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, SandboxJS blocks direct assignment to global objects…
CVE-2026-2761 — Critical (CVSS 10.0): Sandbox escape in the Graphics: WebRender component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33,…
CVE-2022-32845 — Critical (CVSS 10.0): This issue was addressed with improved checks. This issue is fixed in watchOS 8.7, iOS 15.6 and iPadOS 15.6, macOS…
CVE-2026-45102 — Critical (CVSS 9.9): OneUptime is an open-source monitoring and observability platform. Prior to 10.0.98, OneUptime uses the Node.js' vm…
CVE-2026-25115 — Critical (CVSS 9.9): n8n is an open source workflow automation platform. Prior to version 2.4.8, a vulnerability in the Python Code node…

Browse all CWE-693 (Protection Mechanism Failure) vulnerabilities →