---
title: "CVE-2023-50422: Improper JWT Signature Validation in SAP Security Services Library"
url: https://erroneo.us/security/cve/CVE-2023-50422/
description: "CVE-2023-50422 (com.sap.cloud.security:java-security (Maven)): SAP BTP Security Services Integration Library ([Java]…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-12-12
date_modified: 2026-02-25
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-50422"
kev: false
cvss: 9.3
epss: 0.01355
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-50422: Improper JWT Signature Validation in SAP Security Services Library

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 1.4% , percentile 71: FIRST’s model estimates a 1.4% chance of exploitation activity in the next 30 days, higher than 71% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes com.sap.cloud.security:java-security (Maven) < 2.17.0, fixed in 2.17.0 ; com.sap.cloud.security:java-security (Maven) >= 3.0.0, < 3.3.0, fixed in 3.3.0 ; com.sap.cloud.security:spring-security (Maven) < 2.17.0, fixed in 2.17.0 ; com.sap.cloud.security:spring-security (Maven) >= 3.0.0, < 3.3.0, fixed in 3.3.0 . Check your lockfile, including transitive dependencies.

## What it is

SAP BTP Security Services Integration Library ([Java] cloud-security-services-integration-library) - versions below 2.17.0 and versions from 3.0.0 to before 3.3.0, allow under certain conditions an escalation of privileges. On successful exploitation, an unauthenticated attacker can obtain arbitrary permissions within the application.

## Affected packages

- Maven `com.sap.cloud.security:java-security` < 2.17.0 → fixed: 2.17.0
- Maven `com.sap.cloud.security:java-security` >= 3.0.0, < 3.3.0 → fixed: 3.3.0
- Maven `com.sap.cloud.security:spring-security` < 2.17.0 → fixed: 2.17.0
- Maven `com.sap.cloud.security:spring-security` >= 3.0.0, < 3.3.0 → fixed: 3.3.0
- Maven `com.sap.cloud.security.xsuaa:spring-xsuaa` < 2.17.0 → fixed: 2.17.0
- Maven `com.sap.cloud.security.xsuaa:spring-xsuaa` >= 3.0.0, < 3.3.0 → fixed: 3.3.0

## Affected products (CVE record)

- SAP_SE cloud-security-services-integration-library: < 2.17.0, 3.0.0 < 3.3.0

## Severity

- sap CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.35% probability of exploitation activity in the next 30 days; percentile 71.

## Sources

- [me.sap.com](https://me.sap.com/notes/3411067)
- [github.com](https://github.com/SAP/cloud-security-services-integration-library/security/advisories/GHSA-59c9-pxq8-9c73)
- [GitHub Advisory GHSA-59c9-pxq8-9c73](https://github.com/advisories/GHSA-59c9-pxq8-9c73)
- [CVE.org record CVE-2023-50422](https://www.cve.org/CVERecord?id=CVE-2023-50422)
- [NVD entry CVE-2023-50422](https://nvd.nist.gov/vuln/detail/CVE-2023-50422)
- [sap.com](https://www.sap.com/documents/2022/02/fa865ea4-167e-0010-bca6-c68f7e60039b.html)
- [github.com](https://github.com/SAP/cloud-security-services-integration-library/)
- [mvnrepository.com](https://mvnrepository.com/artifact/com.sap.cloud.security/java-security)
- [mvnrepository.com](https://mvnrepository.com/artifact/com.sap.cloud.security/spring-security)
- [mvnrepository.com](https://mvnrepository.com/artifact/com.sap.cloud.security.xsuaa/spring-xsuaa)
- [blogs.sap.com](https://blogs.sap.com/2023/12/12/unveiling-critical-security-updates-sap-btp-security-note-3411067/)
- [me.sap.com](https://me.sap.com/notes/3413475)
- [github.com](https://github.com/SAP/cloud-security-services-integration-library/commit/4b3e42ab23df6418243b29908b1a2582818d9360)
- [github.com](https://github.com/SAP/cloud-security-services-integration-library/commit/7ce9601979c30ae269a1cbaf7cf33486d10736f1)
- [en.wikipedia.org](https://en.wikipedia.org/wiki/JSON_Web_Token)

---
Source page: https://erroneo.us/security/cve/CVE-2023-50422/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt