Medium severity · published Dec 9, 2020
CVE-2020-26834
SAP HANA Database, version - 2.0, does not correctly validate the username when performing SAML bearer token-based user authentication
5.4
CVSS
0.7%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HD
Hana Database · Sap
2.00 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-26834
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-26834
Permissions Required
https://launchpad.support.sap.com/#/notes/2978768
Vendor Advisory
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=564757079
More from Hana Database
9.8
CVE-2023-40309
Missing Authorization check in SAP CommonCryptoLib
8.8
CVE-2026-0492
Privilege escalation vulnerability in SAP HANA database
7.5
CVE-2023-40308
Memory Corruption vulnerability in SAP CommonCryptoLib
7.5
CVE-2019-0350
SAP HANA Database, versions 1.0, 2.0, allows an unauthorized attacker to send a malformed connection request, which crashes the indexserver of an SAP HANA instance, leading to…
7.5
CVE-2018-2424
SAP UI5 did not validate user input before adding it to the DOM structure