CVE-2020-26834 json
SAP HANA Database, version - 2.0, does not correctly validate the username when performing SAML bearer token-based user authentication.
published 2020-12-09 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-19370
- cvss
- 4.2
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
SAP HANA Database, version - 2.0, does not correctly validate the username when performing SAML bearer token-based user authentication. It is possible to manipulate a valid existing SAML bearer token to authenticate as a user whose name is identical to the truncated username for whom the SAML bearer token was issued.
Exploit prediction
0.69% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 4.2 | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| NVD | 2.0 | 5.5 | AV:N/AC:L/Au:S/C:P/I:P/A:N |
Affected products
- SAP SE SAP HANA Database
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
wiki.scn.sap.com
/wiki/pages/viewpage.action?pageId=564757079
vendor-advisory
-
launchpad.support.sap.com
/#/notes/2978768
permissions-required
Sources
- CVE List CVE-2020-26834
- NVD CVE-2020-26834
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.