Improper Neutralization of Null Byte or NUL Character Affecting commons-codec:commons-codec package, versions [1.22.0,1.23.0)
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JAVA-COMMONSCODEC-22391319
- published10 Nov 2026
- disclosed9 Nov 2026
- creditUnknown
Introduced: 9 Nov 2026
NewCVE-2026-124077 (opens in a new tab)How to fix?
Upgrade commons-codec:commons-codec to version 1.23.0 or higher.
Overview
commons-codec:commons-codec is a package that contains simple encoder and decoders for various formats such as Base64 and Hexadecimal.
Affected versions of this package are vulnerable to Improper Neutralization of Null Byte or NUL Character via the GitIdentifiers class in the digest component. An attacker can make distinct directory trees produce the same Git tree identifier or SWHID by supplying an entry name containing a NUL byte, which Git treats as the end of the name. This affects applications that build trees from externally supplied names, such as archive entries or direct API input; trees built by walking common file systems are not affected.