What is CVE-2026-61426?

CVE-2026-61426 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Information Disclosure. CVSS score: 8.6/10. Published 2026-07-11.

How severe is CVE-2026-61426?

High severity. CVSS v3 base score is 8.6 out of 10.

Information disclosure in Mervinpraison Praisonai

CVE-2026-61426

PraisonAI before 1.7.3 contains an insecure default configuration that binds to all interfaces with no API key requirement and wildcard CORS. Unauthenticated attackers can call GET /api/agents to read agent instructions and system prompts, or POST /api/chat to invoke agents without authentication.

Vulnerability class: Information Disclosure

Published 2026-07-11 · last modified 2026-07-13.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L.

EPSS exploit prediction

EPSS: 0.005 (39.4th percentile), scored 2026-10-12.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Mervinpraison Praisonai — versions 0, 1.7.3

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

github.com/MervinPraison/PraisonAI/security/advisories/GHSA-6wjp-v33h-5cvq (vendor-advisory)
www.vulncheck.com/advisories/praisonai-before-unauthenticated-agent-access-via-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-61426?: CVE-2026-61426 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Information Disclosure. CVSS score: 8.6/10. Published 2026-07-11.
How severe is CVE-2026-61426?: High severity. CVSS v3 base score is 8.6 out of 10.