PraisonAI: SSRF protection bypass in `spider_tools._host_is_blocked()` via DNS-resolved hostnames (`127.0.0.1.nip.io`)
Summary
| CVE | CVE-2026-55526 |
|---|---|
| State | PUBLISHED |
| Assigner | GitHub_M |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-25 15:16:33 UTC |
| Updated | 2026-08-25 20:16:57 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 8.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Problem Types: CWE-350 | CWE-918 | CWE-350 CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 8.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N |
| 3.1 | CNA | DECLARED | 8.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
ChangedConfidentiality
HighIntegrity
LowAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | MervinPraison | PraisonAI | affected < 4.6.58 | Not specified |
| CNA | MervinPraison | Praisonaiagents | affected < 1.6.58 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/MervinPraison/PraisonAI/commit/2f9677abb2ea68eab864ee8b6a828f... | [email protected] | github.com | |
| github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x44h-65qv-cw74 | [email protected] | github.com | |
| github.com/MervinPraison/PraisonAI/releases/tag/v4.6.58 | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.