SSRF in Mervinpraison Praisonai

CVE-2026-55535

PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, the Jobs API validate_webhook_url() path fails open on socket.gaierror and does not bind the validated address to the later request. An attacker webhook_url can later resolve to 127.0.0.1, 169.254.169.254, or another internal address. This issue is fixed in version 4.6.58.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-55535?
CVE-2026-55535 is a medium-severity vulnerability in Mervinpraison Praisonai, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.8/10. Published 2026-08-25.
How severe is CVE-2026-55535?
Medium severity. CVSS v3 base score is 6.8 out of 10.