Improper Neutralization of Null Byte or NUL Character Affecting github.com/free5gc/udm/internal/sbi package, versions <1.4.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMFREE5GCUDMINTERNALSBI-15763377
- published25 Mar 2026
- disclosed23 Mar 2026
- creditUnknown
Introduced: 23 Mar 2026
CVE-2026-33191 (opens in a new tab)How to fix?
Upgrade github.com/free5gc/udm/internal/sbi to version 1.4.2 or higher.
Overview
Affected versions of this package are vulnerable to Improper Neutralization of Null Byte or NUL Character via the URL path parameter handling process. An attacker can cause the application to return a 500 Internal Server Error by injecting a null byte into the URL path parameter.