How severe is CVE-2026-40116?

CVE-2026-40116 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-40116 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40116?

CVE-2026-40116 affects Praison Praisonai. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40116?

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-2026-40116 have an EU (EUVD) identifier?

Yes. CVE-2026-40116 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21162.

When was CVE-2026-40116 published?

CVE-2026-40116 was published on 2026-04-09 and last updated on 2026-06-17.

CVE-2026-40116

CVE-2026-40116 is a high-severity vulnerability in Praison Praisonai with a CVSS 3.x base score of 7.5. 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-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21162
Weakness: CWE-770
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 /media-stream WebSocket endpoint in PraisonAI's call module accepts connections from any client without authentication or Twilio signature validation. Each connection opens an authenticated session to OpenAI's Realtime API using the server's API key. There are no limits on concurrent connections, message rate, or message size, allowing an unauthenticated attacker to exhaust server resources and drain the victim's OpenAI API credits. This vulnerability is fixed in 4.5.128.

Frequently asked questions

What is CVE-2026-40116?: PraisonAI is a multi-agent teams system. Prior to 4.5.128, the /media-stream WebSocket endpoint in PraisonAI's call module accepts connections from any client without authentication or Twilio signature validation. Each connection opens an authenticated session to OpenAI's Realtime API using the server's API key. There are no limits on concurrent connections, message rate, or message size, allowing an unauthenticated attacker to exhaust server resources and drain the victim's OpenAI API credits. This vulnerability is fixed in 4.5.128.
How severe is CVE-2026-40116?: CVE-2026-40116 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-40116 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40116?: CVE-2026-40116 affects Praison Praisonai. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40116?: 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-2026-40116 have an EU (EUVD) identifier?: Yes. CVE-2026-40116 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21162.
When was CVE-2026-40116 published?: CVE-2026-40116 was published on 2026-04-09 and last updated on 2026-06-17.

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-q5r4-47m9-5mc7

Affected products (1)

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

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