Vulnerability · Published Aug 28, 2026 · Assigned by VulnCheck

CVE-2026-82285BISHENG Unauthenticated Server-Side Request Forgery via Workflow Report Callback

High 8.2

In plain English

A high-severity server-side request forgery in bisheng from dataelement. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)0.5%top 54.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
dataelement	bisheng	0 – through 2.6.0-fix2

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

References

GitHub Issue #2190 issue-tracking
https://github.com/dataelement/bisheng product
Vulnerable code: workflow.py technical-description
VulnCheck Advisory: BISHENG Unauthenticated Server-Side Request Forgery via Workflow Report Callback third-party-advisory