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

Should you act?

Critical and remotely reachable

No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• 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.

From the GitHub advisory

Impact SAP BTP Security Services Integration Library ([Java] cloud-security-services-integration-library) allows under certain conditions an escalation of privileges. On successful exploitation, an unauthenticated attacker can obtain arbitrary permissions within the application.

Patches Upgrade to patched version >= 2.17.0 or >= 3.3.0 We always recommend to upgrade to the latest released version.

Workarounds No workarounds

References https://www.cve.org/CVERecord?id=CVE-2023-50422

Weakness type: CWE-749, CWE-269.

Product: com.sap.cloud.security:java-security (Maven) · Assigned by: sap · Published: 2023-12-12

Affected and fixed versions

Severity scores

• Attack vector: network (remotely reachable)
• Attack complexity: low
• Attack requirements: none
• Privileges required: none (no login)
• User interaction: none

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• 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.

Timeline

• 2023-12-12 — CVE record published by sap
• 2023-12-13 — GitHub-reviewed advisory GHSA-59c9-pxq8-9c73 published (critical)
• 2026-02-25 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vendor and project advisories, patches

1. me.sap.com me.sap.com
2. github.com github.com

Vulnerability records

1. GitHub Advisory GHSA-59c9-pxq8-9c73 github.com
2. CVE.org record CVE-2023-50422 cve.org
3. NVD entry CVE-2023-50422 nvd.nist.gov

Other references from the CVE record and advisory

1. sap.com sap.com
2. github.com github.com
3. mvnrepository.com mvnrepository.com
4. mvnrepository.com mvnrepository.com
5. mvnrepository.com mvnrepository.com
6. blogs.sap.com blogs.sap.com
7. me.sap.com me.sap.com
8. github.com github.com
9. github.com github.com
10. en.wikipedia.org en.wikipedia.org

Critical Maven advisories · Today’s Security Digest