CVE-2020-26172
Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which allows...
Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which allows an attacker to reuse the token when a session is active. The JWT token does not contain an expiration timestamp.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which allows an attacker to reuse the token when a session is active. The JWT token does not contain an expiration timestamp.
- Record
CVE-2020-26172- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AC:H/AV:N/A:N/C:L/I:L/PR:N/S:U/UI:R - Updated
- 2026-11-02
EUVDEUVD-2020-18797
Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which allows an attacker to reuse the token when a session is active. The JWT token does not contain an expiration timestamp.
- Record
EUVD-2020-18797- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AC:H/AV:N/A:N/C:L/I:L/PR:N/S:U/UI:R - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jj37-qmmg-fmgp No score
Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which allows...
Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which allows an attacker to reuse the token when a session is active. The JWT token does not contain an expiration timestamp.
- Record
GHSA-jj37-qmmg-fmgp- Weakness
- CWE-294
- Updated
- 2026-11-02
NVD
Every login in tangro Business Workflow before 1.18.1 generates the same JWT token, which allows an attacker to reuse the token when a session is active. The JWT token does not contain an expiration timestamp.
- Record
CVE-2020-26172- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - CVSS 2.0
- 6.4 Medium
AV:N/AC:L/Au:N/C:P/I:P/A:N - Weakness
- CWE-294
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-26172 is a medium vulnerability (CVSS 4.2) in Tangro Business Workflow, published December 18, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.66%, the 51st percentile. No source names a fixed version.