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Vulnerability record · CVE-2026-61439 · published 11 July 2026

CVE-2026-61439: Insecure default initialization vulnerability

PraisonAI versions before 4.6.78 contain a prompt injection defense misconfiguration where the block threshold defaults to CRITICAL severity, allowing HIGH-level threats to pass through unblocked. Attackers can submit single-vector prompt injection attacks such as instruction overrides or financial manipulation that trigger HIGH severity detection but are logged without blocking, enabling system prompt extraction and unauthorized tool invocations.

8.7 CVSS 4.0 High EPSS 0.43% · top 65.0% CWE-1188 · Insecure default initialization Deferred
8.7CVSS 4.0 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
14 Jul 2026Last modified by NVD

Description

PraisonAI versions before 4.6.78 contain a prompt injection defense misconfiguration where the block threshold defaults to CRITICAL severity, allowing HIGH-level threats to pass through unblocked. Attackers can submit single-vector prompt injection attacks such as instruction overrides or financial manipulation that trigger HIGH severity detection but are logged without blocking, enabling system prompt extraction and unauthorized tool invocations.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-fj8f-m44g-c479
https://www.vulncheck.com/advisories/praisonai-before-prompt-injection-defense-bypass
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-fj8f-m44g-c479

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Source: NIST National Vulnerability Database (record CVE-2026-61439), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.