---
id: CVE-2026-82285
title: >-
  BISHENG Unauthenticated Server-Side Request Forgery via Workflow Report
  Callback
summary: >-
  bisheng through 2.6.0-fix2 contains a server-side request forgery
  vulnerability in the POST /api/v1/workflow/report/callback endpoint that lacks
  authentication and applies no URL scheme restrictions or host filtering.
  Unauthenticated att…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-918
vendor: dataelement
product: bisheng
affected:
  - bisheng <= 2.6.0-fix2
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-08-31T18:48:03.817822Z'
exploitAvailable: true
published: '2026-08-28'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T14:20:15.156Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-82285'
references:
  - url: 'https://github.com/dataelement/bisheng/issues/2190'
    label: 'GitHub Issue #2190'
  - url: 'https://github.com/dataelement/bisheng'
  - url: >-
      https://github.com/dataelement/bisheng/blob/3f27641987c7363d2d7b7b1a8c3c3dbe09c60fd7/src/backend/bisheng/api/v1/workflow.py
    label: 'Vulnerable code: workflow.py'
  - url: >-
      https://www.vulncheck.com/advisories/bisheng-unauthenticated-server-side-request-forgery-via-workflow-report-callback
    label: >-
      VulnCheck Advisory: BISHENG Unauthenticated Server-Side Request Forgery
      via Workflow Report Callback
tags:
  - cve.org
  - exploit-available
epss: 0.00544
epssPercentile: 0.43217
ingestedAt: '2026-09-24T15:45:56.693Z'
---

## Overview

bisheng through 2.6.0-fix2 contains a server-side request forgery vulnerability in the POST /api/v1/workflow/report/callback endpoint that lacks authentication and applies no URL scheme restrictions or host filtering. Unauthenticated attackers can supply arbitrary URLs to enumerate internal network services and cloud metadata endpoints, then retrieve captured responses from object storage using caller-supplied object names.

## Affected

- `bisheng <= 2.6.0-fix2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.