TI-2020-16004 Aliases CVE-2020-26173 GHSA-cj5x-6j3p-rgxm

An incorrect access control implementation in Tangro Business Workflow before 1.18.1…

LOW 21CWE-306Published 2020-12-18 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: Low · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-306.

Summary

An incorrect access control implementation in Tangro Business Workflow before 1.18.1 allows an attacker to download documents (PDF) by providing a valid document ID and token. No further authentication is required.

Why it matters now

EPSS 0.0074 54th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:tangro:business_workflow::::::::	before 1.18.1	Vulnerable	Tangro

cpe:2.3:a:tangro:business_workflow:*:*:*:*:*:*:*:* Versions before 1.18.1 Vulnerable ·Tangro

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-26173
2026-10-03 Alias added: GHSA-cj5x-6j3p-rgxm

References

Exploit 1

https://blog.to.com/advisory-tangro-bwf-1-17-5-multiple-vulnerabilities/

Other 1

https://www.tangro.de/

TI-2020-16005 tangro Business Workflow before 1.18.1 requests a list of allowed filetypes from the… CVSS 3.1HIGH 8.8
TI-2020-16006 In tangro Business Workflow before 1.18.1, an attacker can manipulate the value of PERSON… CVSS 3.1MEDIUM 6.5
TI-2020-16003 Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which… CVSS 3.1MEDIUM 6.5
TI-2020-16009 In tangro Business Workflow before 1.18.1, knowing an attachment ID, it is possible to… CVSS 3.1MEDIUM 5.3
TI-2020-16008 In tangro Business Workflow before 1.18.1, a user's profile contains some items that are… CVSS 3.1MEDIUM 4.3
TI-2020-16007 An issue was discovered in tangro Business Workflow before 1.18.1. CVSS 3.1MEDIUM 4.3

See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences