SSRF in Mervinpraison Praisonai
CVE-2026-55537
PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, JobSubmitRequest.validate_webhook_url() accepts webhook_url when resolution raises socket.gaierror because the exception path uses except socket.gaierror: pass. JobExecutor._send_webhook() later performs a fresh lookup, allowing DNS changes to direct the request to an internal service. 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 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/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-2026-55537?
- CVE-2026-55537 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.1/10. Published 2026-08-25.
- How severe is CVE-2026-55537?
- High severity. CVSS v3 base score is 7.1 out of 10.