PraisonAI: SSRF in web_crawl tool via redirect-following and DNS rebinding (validate-then-fetch gap) (CVE-2026-55524) | HOL Guard CVE

High · CVSS 7.5CVE-2026-55524GHSA-VG6P-V9VM-6FGJ

PraisonAI: SSRF in web_crawl tool via redirect-following and DNS rebinding (validate-then-fetch gap)

Answer in brief

CVE-2026-55524 records a High severity (CVSS 7.5) vulnerability in PraisonAI: SSRF in web_crawl tool via redirect-following and DNS rebinding (validate-then-fetch gap). The current sources do not mark it as known exploited. The current feed maps MervinPraison/PraisonAI (generic), praisonaiagents (pip). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 5, 2026Updated Sep 8, 2026Source checked Sep 19, 2026First seen by HOL Aug 5, 2026Material review Sep 8, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.5
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps MervinPraison/PraisonAI (generic), praisonaiagents (pip). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
MervinPraison/PraisonAIgeneric	< 1.6.58	Not reported
praisonaiagentspip	<1.6.58	1.6.58

Recommended response

Check inventory. Check lockfiles and deployed manifests for MervinPraison/PraisonAI, praisonaiagents.
Review the reported fix. Update praisonaiagents to 1.6.58 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 5, 2026

Sources and claim methodology

Upstream source description

PraisonAI is a multi-agent teams system. In versions prior to 1.6.58, the web_crawl tool performs its SSRF check only on the initially supplied URL, allowing the protection to be bypassed so the tool connects to attacker-chosen internal destinations. The check resolves the hostname once with socket.gethostbyname and rejects private/loopback/link-local results, but then passes the URL to a fetcher using httpx.Client(follow_redirects=True) (or urllib.request.urlopen when httpx is absent, which also follows redirects) that re-resolves the hostname at connect time with no further validation. This validate-here/fetch-there gap is exploitable through both HTTP redirects and DNS rebinding. If an attacker can influence URLs passed to web_crawl(), directly or through an agent/tool workflow, they can cause the PraisonAI host to fetch loopback, private-network, or cloud metadata endpoints reachable from that host, with the response body returned in the web_crawl() result. This issue has been fixed in version 1.6.58.

Quoted source text, attributed separately from HOL analysis.