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Tracking
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-9hj4-r449-hfvc | Ruby JSON: JSON::ResumableParser#partial_value dereferences a freed input buffer and crashes on truncated duplicate-key streams |
Fri, 07 Aug 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Fri, 07 Aug 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Ruby
Ruby json |
|
| Vendors & Products |
Ruby
Ruby json |
Fri, 07 Aug 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partial_value reconstructs an incomplete object containing duplicate keys, the duplicate-key warning path calls cursor_position, which dereferences those stale pointers. This results in a heap-use-after-free and can terminate the Ruby process. An attacker who can supply JSON stream data to an application using JSON::ResumableParser may cause process termination when the application calls partial_value on incomplete attacker-controlled input containing duplicate object keys. This issue has been fixed in version 2.21.2. | |
| Title | Ruby JSON: JSON::ResumableParser#partial_value dereferences a freed input buffer and crashes on truncated duplicate-key streams | |
| Weaknesses | CWE-416 | |
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-07T21:02:06.463Z
Reserved: 2026-08-07T18:26:53.523Z
Link: CVE-2026-71847
Updated: 2026-08-07T20:57:05.891Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-08-07T20:45:03Z
-
CWE-416
Use After Free
Github GHSA