praisonaiagents has a web_crawl SSRF protection bypass via unchecked redirect targets

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

7.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N · score source

EPSS

• CVE-2026-55523: 0.47% estimated exploitation activity in the next 30 days; percentile 40.57 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary praisonaiagents.tools.webcrawltools.webcrawl() validates the initial URL and blocks direct loopback/private destinations by default, but the default httpx fallback still uses httpx.Client(followredirects=True) and does not revalidate redirect targets. An attacker-controlled public URL can pass the initial host check, redirect to loopback/private/cloud metadata infrastructure, and have the redirected response body returned by webcrawl(). This appears to be an incomplete fix / patch bypass for the published webcrawl SSRF class (GHSA-qq9r-63f6-v542 / CVE-2026-40160, and GHSA-8f4v-xfm9-3244). Affected Component Package: File: Functions: Affected Versions Validated affected: - praisonaiagents 1.5.128 via repository tag v4.5.128; - praisonaiagents 1.6.40 via repository tag v4.6.40; - praisonaiagents 1.6.56 via repository tag v4.6.56; - current origin/main commit 095653d78a01cc6c80ff5b2dd20a8e5619686ddc. Suggested affected range for maintainer confirmation: No patched version is…

Published by the source

25 Aug 2026, 14:18 UTC

Last modified by the source

25 Aug 2026, 14:18 UTC

Source last checked

26 Oct 2026, 13:50 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-8hjw-25cg-g52h

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# Patch Next advisory brief: CVE-2026-55523

Advisory: praisonaiagents has a `web_crawl` SSRF protection bypass via unchecked redirect targets
IDs: CVE-2026-55523, GHSA-8hjw-25cg-g52h
Record: https://patchnext.com/advisories/cve-2026-55523 (revision 1, source checked 26 Oct 2026, 13:50 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: praisonaiagents 1.6.58. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI praisonaiagents: affected >= 1.5.128, < 1.6.58; fixed in 1.6.58

## 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://github.com/advisories/GHSA-8hjw-25cg-g52h (GitHub-reviewed advisory GHSA-8hjw-25cg-g52h lists affected ranges: PyPI praisonaiagents >=1.5.128 <1.6.58)

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