High
PraisonAI: SSRF protection bypass in `spider_tools._host_is_blocked()` via DNS-resolved hostnames (`127.0.0.1.nip.io`)
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-55526
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 02:46 UTC · Revision 1
Source evidence
PraisonAI: SSRF protection bypass in `spider_tools._host_is_blocked()` via DNS-resolved hostnames (`127.0.0.1.nip.io`)
core-osv · Original sourcePublished 25 Aug 2026, 14:36 UTC
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.
osv:CVE-2026-55526
Complete source record
{
"id": "ca9181c7a0b13f7bfb69b3ca815b036e7b2d1db53c217574be45662ec578fbeb",
"url": "https://osv.dev/vulnerability/CVE-2026-55526",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "PraisonAI: SSRF protection bypass in `spider_tools._host_is_blocked()` via DNS-resolved hostnames (`127.0.0.1.nip.io`)",
"summary": "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.",
"evidence": "osv:CVE-2026-55526",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-55526",
"aliases": [
"CVE-2026-55526",
"GHSA-x44h-65qv-cw74",
"PYSEC-2026-3905"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N"
}
],
"affected": [
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"modified": "2026-10-28T02:30:25.470798331Z",
"provider": "osv",
"references": [
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"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55526.json",
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}
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"evidence": "/id"
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},
"source_id": "core-osv",
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"published_at": "2026-08-25T14:36:09.934+00:00"
}