CVE-2026-44288 (GCVE-0-2026-44288)
Vulnerability from cvelistv5
Published
2026-05-13 14:37
Modified
2026-05-13 18:33
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-176 - Improper Handling of Unicode Encoding
Summary
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs includes a minimal UTF-8 decoder that accepted overlong UTF-8 byte sequences and decoded them to their canonical characters instead of replacing them. An attacker who can provide protobuf binary data decoded through the affected UTF-8 path may be able to bypass application-level checks that inspect raw bytes before protobuf string decoding. For example, bytes that do not contain certain ASCII characters could decode to strings containing those characters. This vulnerability is fixed in 7.5.6 and 8.0.2.
References
Impacted products
Vendor Product Version
protobufjs protobuf.js Version: < 7.5.6
Version: >= 8.0.0, < 8.0.2
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