CVE-2026-47390: PraisonAI is a multi-agent teams system. Prior to version 4.6.40 of PraisonAI, corresponding to version 1.6.40 of praisonaiagents, `spider_tools` URL…

PriorityP428medium5.5CVSS 3.1

AVLACLPRNUIRSUCHINAN

EPSS

0.18%

7.2th percentile

PraisonAI is a multi-agent teams system. Prior to version 4.6.40 of PraisonAI, corresponding to version 1.6.40 of praisonaiagents, `spider_tools` URL validation can be bypassed using alternate loopback host encodings. The tool contains a URL validation function intended to block local or unsafe targets before fetching attacker-controlled URLs. However, the validation only blocks a small set of exact host strings such as `localhost` and `127.0.0.1`. It does not normalize hostnames, resolve DNS, parse numeric IPv4 variants, or validate the final resolved IP address before making the request. As a result, certain URLs may bypass the protection and still reach loopback services. After the weak validation passes, `scrape_page()` calls `requests.Session.get()` on the attacker-controlled URL. This allows an attacker who can influence URLs passed to `scrape_page`, `crawl`, or `extract_text` to induce SSRF requests against loopback-only services. This is a server-side request forgery protection bypass. PraisonAI version 4.6.40 and praisonaiagents version 1.6.40 contain a patch.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
mervinpraison	praisonai	< 4.6.40	4.6.40
mervinpraison	praisonai	>= 0 < 4.6.40	4.6.40
mervinpraison	praisonaiagents	< 1.6.40	1.6.40
mervinpraison	praisonaiagents	>= 0 < 1.6.40	1.6.40
mervinpraison	praisonaiagents	>= 0 < 1.6.59	1.6.59

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