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
- Mervinpraison Praisonai — versions < 4.6.58
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM)
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.