Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Versions of java-security, spring-security and spring-xsuaa before 2.17.0, and from 3.0.0 before 3.3.0, do not properly validate JWT signatures under certain conditions. An unauthenticated attacker can exploit this to obtain arbitrary permissions within the application. Upgrade to 2.17.0 or 3.3.0 or later; no workaround is listed.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 9.1 | Critical | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | CNA (sap) |
- CISA KEV Not listed.
- EPSS 0.014, the 71st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:19 UTC First seen by agentprime
- 31 Oct 2026, 14:19 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-59c9-pxq8-9c73
- OSV: GHSA-59c9-pxq8-9c73
- github.com/SAP/cloud-security-services-integration-library/security/advisories/GHSA-59c9-pxq8-9c73
- nvd.nist.gov/vuln/detail/CVE-2023-50422
- github.com/SAP/cloud-security-services-integration-library/commit/4b3e42ab23df6418243b29908b1a2582818d9360
- github.com/SAP/cloud-security-services-integration-library/commit/7ce9601979c30ae269a1cbaf7cf33486d10736f1
- blogs.sap.com/2023/12/12/unveiling-critical-security-updates-sap-btp-security-note-3411067
- en.wikipedia.org/wiki/JSON_Web_Token
- github.com/SAP/cloud-security-services-integration-library
- me.sap.com/notes/3411067
- me.sap.com/notes/3413475
- mvnrepository.com/artifact/com.sap.cloud.security.xsuaa/spring-xsuaa
- mvnrepository.com/artifact/com.sap.cloud.security/java-security
- mvnrepository.com/artifact/com.sap.cloud.security/spring-security