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High, CVSS 8.8amended

PraisonAI: HTTPApproval dashboard renders tool arguments as raw HTML, allowing approval-page XSS to approve dangerous tools

CVE-2026-56840GHSA-63v4-w882-g4x2

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (praisonai 4.6.59), 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

  • PyPI praisonai

    Affected
    >= 4.5.2, <= 4.6.58
    Fixed in
    4.6.59

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
8.8 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
  • CVE-2026-56840: 0.38% estimated exploitation activity in the next 30 days; percentile 31.51 (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.

HTTPApproval dashboard renders tool arguments as raw HTML, allowing approval-page XSS to approve dangerous tools Summary praisonai.bots.HTTPApproval renders pending tool approval arguments directly into the approval dashboard HTML. An attacker-controlled tool argument can inject JavaScript into that page. When a human opens the approval URL to inspect the risky tool request, the script runs in the dashboard origin and can POST to the same request's /approve/{requestid}/decide endpoint, causing HTTPApproval to return approved=True. The local PoV uses a harmless touch /tmp/prai010

command prefix and stops at the approval decision. It does not execute the command. Affected Versions Proposed affected range: = 4.5.2, <= 4.6.57. Validated affected: - current head 2f9677abb2ea68eab864ee8b6a828fd0141612e1 (v4.6.57-4-g2f9677ab) - v4.5.2 - v4.5.3 - v4.5.124 - v4.5.126 - v4.5.128 - v4.6.10 - v4.6.56 - v4.6.57 v4.5.0 and v4.5.1 do not contain the HTTPApproval backend. Impact An attacker who…

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

    Amended from ghsa record GHSA-63v4-w882-g4x2

  2. Revision 1 · created ·

    Published from osv record GHSA-63v4-w882-g4x2

Agent brief

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# Patch Next advisory brief: CVE-2026-56840

Advisory: PraisonAI: HTTPApproval dashboard renders tool arguments as raw HTML, allowing approval-page XSS to approve dangerous tools
IDs: CVE-2026-56840, GHSA-63v4-w882-g4x2
Record: https://patchnext.com/advisories/cve-2026-56840 (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 8.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: praisonai 4.6.59. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI praisonai: affected >= 4.5.2, <= 4.6.58; fixed in 4.6.59

## Suggested inspection (read-only)
- `python -m pip show praisonai`: 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 praisonai.
- 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-63v4-w882-g4x2 (OSV record GHSA-63v4-w882-g4x2 lists affected ranges: PyPI praisonai >=4.5.2 <4.6.59 (fixed))
- Verified: https://github.com/advisories/GHSA-63v4-w882-g4x2 (GitHub-reviewed advisory GHSA-63v4-w882-g4x2 lists affected ranges: PyPI praisonai >=4.5.2 <=4.6.58)

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