CVE-2026-61439
PraisonAI before 4.6.78 Prompt Injection Defense Bypass
- State
- Published
- Severity
- 8.7 High
- Published
- Jul 11, 2026
- Updated
- Jul 14, 2026
- Reserved
- Jul 9, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-1188 Initialization of a Resource with an Insecure Default
Affected Products
| Product | Versions |
|---|---|
PraisonAIMervinPraison |
|
References
- GitHub Security Advisory (GHSA-fj8f-m44g-c479)vendor-advisory
- VulnCheck Advisory: PraisonAI before 4.6.78 Prompt Injection Defense Bypassthird-party-advisory
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