What’s Vulnerable › Vulnerabilities

CVE-2026-50268: Steeltoe: OAEP setting silently selects PKCS#1 v1.5 padding

• Severity: low (CVSS 1.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-17 · updated 2026-10-26
• Weakness: CWE-256

Description

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. In Steeltoe.Configuration.Encryption 4.0.0 through 4.1.0, configuring `encrypt:rsa:algorithm=OAEP` does not enable OAEP encryption. Due to an incorrect BouncyCastle transformation string, the `OAEP` setting selects PKCS#1 v1.5, which is the same algorithm as the `DEFAULT` setting. Steeltoe.Configuration.Encryption version 4.2.0 patches the issue.

Affected products

• SteeltoeOSS Steeltoe.Configuration.Encryption: from 4.0.0, < 4.2.0

References

• https://github.com/SteeltoeOSS/Steeltoe/commit/6cfee5cccddf8f9a31de69b0ca5ccdd771b73e5b
• https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-4j9m-h44m-2hv8

Get alerted when CVE-2026-50268 or the next vulnerability affects your stack