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CVE-2026-56840— PraisonAI: HTTPApproval dashboard renders tool arguments as raw HTML, allowing approval-page XSS to approve dangerous tools

Quick assessment

Affected
MervinPraison PraisonAI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PraisonAI 是一个多智能体团队协作系统。在版本 4.5.2 至 4.6.59 之前的版本中， 组件将待审批的工具参数直接渲染到审批仪表板的 HTML 中。攻击者可控制的工具参数可借此向该页面注入 JavaScript。当人工用户打开审批 URL 以检查存在风险的工具请求时，注入的脚本将在仪表板所属的源上下文中执行，并可向同一请求的 端点发起 POST 请求，导致 HTTPApproval 返回 （即批准该请求）。该漏洞已在版本 4.6.59 中修复。

CVSS 8.8 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
MervinPraison PraisonAI >= 4.5.2, < 4.6.59 affected
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I. Basic Information for CVE-2026-56840

Vulnerability Information
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Vulnerability Title
PraisonAI: HTTPApproval dashboard renders tool arguments as raw HTML, allowing approval-page XSS to approve dangerous tools
Source: CVE Program / CVE List V5
Vulnerability Description
PraisonAI is a multi-agent teams system. From version 4.5.2 to before version 4.6.59, 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/{request_id}/decide endpoint, causing HTTPApproval to return approved=True. This issue has been patched in version 4.6.59.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
MervinPraison PraisonAI >= 4.5.2, < 4.6.59 -

II. Public POCs for CVE-2026-56840

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III. Intelligence Information for CVE-2026-56840

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Vendor Advisories for CVE-2026-56840 (1)

Same Patch Batch · MervinPraison · 2026-10-23 · 16 CVEs total

CVE-2026-57116 9.8 CRITICAL PraisonAI: AgentOS remains unauthenticated after GHSA-pm96 patched version and allows remo
CVE-2026-56832 8.8 HIGH PraisonAI DiscordApproval accepts unrelated channel messages as dangerous-tool approvals
CVE-2026-57117 8.8 HIGH PraisonAI: Compute-bridged file tools allow shell command injection
CVE-2026-57144 8.8 HIGH PraisonAI SandlockSandbox falls back to unrestricted subprocess execution when Landlock is
CVE-2026-56837 8.6 HIGH PraisonAI LinearBot processes unsigned webhooks when LINEAR_WEBHOOK_SECRET is missing
CVE-2026-56835 8.3 HIGH PraisonAI Slack app_mention bypasses configured user/channel authorization
CVE-2026-56836 8.2 HIGH PraisonAI recipe serve Typer command bypasses the non-localhost authentication guard
CVE-2026-57113 8.1 HIGH PraisonAI GitHub template cache path traversal allows outside-cache file write and directo
CVE-2026-57121 8.1 HIGH PraisonAI: Missing ownership check on DELETE endpoints allows members to delete others' co
CVE-2026-56838 7.8 HIGH PraisonAI recipe.run_stream skips dangerous-tool policy enforcement
CVE-2026-57142 7.8 HIGH PraisonAI recipe workflow policy can be bypassed by declaring and YAML-approving dangerous
CVE-2026-56833 7.5 HIGH PraisonAI Dynamic Context history and terminal tools read files outside configured storage
CVE-2026-56834 7.5 HIGH PraisonAI dynamic-context artifact tools read arbitrary host files outside artifact storag
CVE-2026-57146 7.5 HIGH PraisonAI A2U incomplete authentication fix leaves current serve command unauthenticated b
CVE-2026-57114 7.2 HIGH PraisonAI: Jobs webhook SSRF protection bypass via DNS rebinding

IV. Related Vulnerabilities

Same product: PraisonAI
Same vendor: MervinPraison
Same weakness: CWE-79

V. Comments for CVE-2026-56840

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