What is CVE-2026-55526?

CVE-2026-55526 is a high-severity vulnerability in Mervinpraison Praisonai, classified under CWE-350. CVSS score: 8.5/10. Published 2026-08-25.

How severe is CVE-2026-55526?

High severity. CVSS v3 base score is 8.5 out of 10.

SSRF in Mervinpraison Praisonai

CVE-2026-55526

PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.58, spider_tools._host_is_blocked() does not resolve ordinary hostnames before scrape_page fetches them. A hostname such as 127.0.0.1.nip.io passes validation and resolves to loopback, permitting internal HTTP access. The fix uses socket.getaddrinfo and fails closed on DNS errors. This issue is fixed in version 1.6.58.

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.

Affected products

Mervinpraison Praisonai — versions < 4.6.58
Mervinpraison Praisonaiagents — versions < 1.6.58

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-55526?: CVE-2026-55526 is a high-severity vulnerability in Mervinpraison Praisonai, classified under CWE-350. CVSS score: 8.5/10. Published 2026-08-25.
How severe is CVE-2026-55526?: High severity. CVSS v3 base score is 8.5 out of 10.