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fkie_cve-2026-57126

PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.58, SpiderTools._validate_url calls _host_is_blocked, which checks literal host encodings but does not resolve DNS names before scrape_page, crawl, extract_links, extract_text, or URL-mention fetches connect. An attacker-controlled hostname resolving to a loopback, private, link-local, or cloud-metadata address therefore bypasses the SSRF policy without a rebinding race and can expose internal responses to the agent. This issue is fixed in praisonaiagents 1.6.58.

GHSA-vxgj-xg5c-p4h7 — praisonaiagents: SSRF guard validates literal IPs only and never resolves DNS

Affected: PyPI: praisonaiagents

# praisonaiagents: SSRF guard validates literal IPs only and never resolves DNS

**Researcher:** Kai Aizen — SnailSploit (@SnailSploit), Adversarial & Offensive Security Research **Target:** https://github.com/MervinPraison/PraisonAI **Weakness:** CWE-918 Server-Side Request Forgery (SSRF).

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## Summary

The SSRF guard shared by PraisonAI's web tools (`SpiderTools._validate_url` → `_host_is_blocked` in `praisonaiagents/tools/spider_tools.py`) inspects only **literal IP-address encodings** of the URL host. It never resolves DNS names. Any hostname whose A/AAAA record points at an internal, loopback, link-local, or cloud-metadata address passes validation and the request is issued to that target. A static internal A record is sufficient — no DNS-rebinding race is required.

The guard's own docstring claims it returns `True` "when hostname **resolves to** loopback/private/internal targets," but no resolution is performed. The fix for CVE-2026-47390 added more *encodings of literal IPs* (decimal integer, `0x` hex, `inet_aton`); it did not address the *class* "host is a name that resolves to a forbidden address."

The same guard is reached through two tool surfaces: - `scrape_page` / `crawl` / `extract_links` / `extract_text` (spider tools) - the `@url` mention fetch in `praisonaiagents/tools/mentions.py` (which calls the identical `SpiderTools._validate_url` then `urllib.request.urlopen`)

The correct pattern already exists in the same package: `file_tools.py` resolves the h…

PYSEC-2026-3535 — praisonaiagents: SSRF guard validates literal IPs only and never resolves DNS

Affected: PyPI: praisonaiagents

# praisonaiagents: SSRF guard validates literal IPs only and never resolves DNS

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## Summary

The correct pattern already exists in the same package: `file_tools.py` resolves the h…