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Vulnerability record · CVE-2020-26834 · published 9 December 2020

CVE-2020-26834: Sap hana database improper authentication vulnerability

Sap · Hana Database

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.

5.4 CVSS 3.1 Medium EPSS 0.69% · top 49.1% CWE-287 · Improper authentication
5.4CVSS 3.1 base score, v2 5.5
0.69%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://launchpad.support.sap.com/#/notes/2978768 Permissions Required
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=564757079 Vendor Advisory
https://launchpad.support.sap.com/#/notes/2978768 Permissions Required
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=564757079 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-26834), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.