CVE-2026-82285

HIGH 8.2

BISHENG Unauthenticated Server-Side Request Forgery via Workflow Report Callback

CVSS Score

8.2

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	dataelement
Product	bisheng
Published	Aug 28, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Affected Versions

dataelement / bisheng

0 ≤ 2.6.0-fix2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/dataelement/bisheng/issues/2190 github.com: https://github.com/dataelement/bisheng github.com: https://github.com/dataelement/bisheng/blob/3f27641987c7363d2d7b7b1a8c3c3dbe09c60fd7/src/backend/bisheng/api/v1/workflow.py vulncheck.com: https://www.vulncheck.com/advisories/bisheng-unauthenticated-server-side-request-forgery-via-workflow-report-callback

Credits

🔍 George Chen