| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-rf6f-7fwh-wjgh | Prototype Pollution via parse() in NodeJS flatted |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Tue, 24 Mar 2026 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 23 Mar 2026 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:webreflection:flatted:*:*:*:*:*:node.js:*:* | |
| Metrics |
cvssV3_1
|
Mon, 23 Mar 2026 10:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Webreflection
Webreflection flatted |
|
| Vendors & Products |
Webreflection
Webreflection flatted |
Sat, 21 Mar 2026 05:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | flatted is a circular JSON parser. Prior to version 3.4.2, the parse() function in flatted can use attacker-controlled string values from the parsed JSON as direct array index keys, without validating that they are numeric. Since the internal input buffer is a JavaScript Array, accessing it with the key "__proto__" returns Array.prototype via the inherited getter. This object is then treated as a legitimate parsed value and assigned as a property of the output object, effectively leaking a live reference to Array.prototype to the consumer. Any code that subsequently writes to that property will pollute the global prototype. This issue has been patched in version 3.4.2. | |
| Title | flatted: Prototype Pollution via parse() | |
| Weaknesses | CWE-1321 | |
| References |
| |
| Metrics |
cvssV4_0
|
Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-03-24T17:57:22.866Z
Reserved: 2026-03-18T02:42:27.507Z
Link: CVE-2026-33228
Updated: 2026-03-24T17:57:13.490Z
Status : Analyzed
Published: 2026-03-20T23:16:46.510
Modified: 2026-03-23T19:14:31.040
Link: CVE-2026-33228
No data.
OpenCVE Enrichment
Updated: 2026-03-23T09:51:51Z
Github GHSA