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OpenAdvisories
High · 8.5 CVE-2026-55526 EUVD-2026-65499GHSA-x44h-65qv-cw74PYSEC-2026-3905

PraisonAI: SSRF protection bypass in `spider_tools._host_is_blocked()` via DNS-resolved hostnames (`127.0.0.1.nip.io`)

Published Aug 25, 2026 · Updated Aug 25, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
MervinPraison PraisonAI < 4.6.58 —
MervinPraison praisonaiagents < 1.6.58 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI praisonaiagents < 1.6.58 1.6.58 GHSA-x44h-65qv-cw74

References