How severe is CVE-2026-40088?

CVE-2026-40088 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-40088 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40088?

CVE-2026-40088 affects Praison Praisonai. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40088?

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-2026-40088 have an EU (EUVD) identifier?

Yes. CVE-2026-40088 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21064.

When was CVE-2026-40088 published?

CVE-2026-40088 was published on 2026-04-09 and last updated on 2026-06-17.

CVE-2026-40088

CVE-2026-40088 is a critical-severity vulnerability in Praison Praisonai with a CVSS 3.x base score of 9.6. 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21064
Weakness: CWE-78
Affected product: Praison Praisonai
Published: 2026-04-09
Last modified: 2026-06-17

Description

PraisonAI is a multi-agent teams system. Prior to 4.5.121, the execute_command function and workflow shell execution are exposed to user-controlled input via agent workflows, YAML definitions, and LLM-generated tool calls, allowing attackers to inject arbitrary shell commands through shell metacharacters. This vulnerability is fixed in 4.5.121.

Frequently asked questions

What is CVE-2026-40088?: PraisonAI is a multi-agent teams system. Prior to 4.5.121, the execute_command function and workflow shell execution are exposed to user-controlled input via agent workflows, YAML definitions, and LLM-generated tool calls, allowing attackers to inject arbitrary shell commands through shell metacharacters. This vulnerability is fixed in 4.5.121.
How severe is CVE-2026-40088?: CVE-2026-40088 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-40088 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40088?: CVE-2026-40088 affects Praison Praisonai. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40088?: 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-2026-40088 have an EU (EUVD) identifier?: Yes. CVE-2026-40088 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21064.
When was CVE-2026-40088 published?: CVE-2026-40088 was published on 2026-04-09 and last updated on 2026-06-17.

References

Affected products (1)

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

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