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High, CVSS 8.5amended

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

CVE-2026-57126GHSA-vxgj-xg5c-p4h7

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (praisonaiagents 1.6.59), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
8.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
EPSS
  • CVE-2026-57126: 0.38% estimated exploitation activity in the next 30 days; percentile 31.93 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

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). --- Summary The SSRF guard shared by PraisonAI's web tools (SpiderTools.validateurl → hostisblocked in praisonaiagents/tools/spidertools.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, inetaton); it…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-vxgj-xg5c-p4h7

  2. Revision 1 · created ·

    Published from osv record GHSA-vxgj-xg5c-p4h7

Agent brief

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# Patch Next advisory brief: CVE-2026-57126

Advisory: praisonaiagents: SSRF guard validates literal IPs only and never resolves DNS
IDs: CVE-2026-57126, GHSA-vxgj-xg5c-p4h7
Record: https://patchnext.com/advisories/cve-2026-57126 (revision 2, source checked 26 Oct 2026, 13:49 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: praisonaiagents 1.6.59. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI praisonaiagents: affected <= 1.6.48; fixed in 1.6.59

## Suggested inspection (read-only)
- `python -m pip show praisonaiagents`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on praisonaiagents.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-vxgj-xg5c-p4h7 (OSV record GHSA-vxgj-xg5c-p4h7 lists affected ranges: PyPI praisonaiagents >=0 <1.6.59 (fixed))
- Verified: https://github.com/advisories/GHSA-vxgj-xg5c-p4h7 (GitHub-reviewed advisory GHSA-vxgj-xg5c-p4h7 lists affected ranges: PyPI praisonaiagents >=0 <=1.6.48)

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