Information Exposure 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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- published24 Feb 2026
- disclosed24 Feb 2026
- creditUnknown
Introduced: 24 Feb 2026
CVE-2026-27642 (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 Information Exposure via the supi parameter. An attacker can cause internal URL parsing errors and expose system-level error details by injecting control characters, such as %00, into requests. This can be used for service fingerprinting.