CVE-2026-48506
- Source
- https://cve.org/CVERecord?id=CVE-2026-48506
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48506.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-48506
- Aliases
- Downstream
- Published
- 2026-06-22T21:17:35.305Z
- Modified
- 2026-07-15T01:48:52.813959211Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- MessagePack-CSharp: MessagePackReader.Skip can recurse without enforcing maximum object graph depth
- Details
-
MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, MessagePackReader.TrySkip() recursively descends into nested arrays and maps without incrementing the reader depth or calling the configured depth checks. This bypasses MessagePackSecurity.MaximumObjectGraphDepth, the library's documented protection against deeply nested object graphs. Many generated and dynamic formatters call reader.Skip() when they encounter unknown map keys, unknown array members, ignored fields, or data that should be skipped for forward compatibility. A deeply nested value in one of these skipped positions can therefore cause unbounded recursion and an uncatchable StackOverflowException. This vulnerability is fixed in 2.5.301 and 3.1.7.
- Database specific
{ "cwe_ids": [ "CWE-674" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48506.json", "cna_assigner": "GitHub_M" }- References
Affected packages
Git / github.com/messagepack-csharp/messagepack-csharp
Affected ranges
- Type
- GIT
- Repo
- https://github.com/messagepack-csharp/messagepack-csharp
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedFixed
- Database specific
{ "cpe": "cpe:2.3:a:messagepack:messagepack:*:*:*:*:*:c\\#:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "2.5.301" }, { "introduced": "3.0.3" }, { "fixed": "3.1.7" } ], "source": "CPE_RANGE" }