CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2022-2421
Critical (9.8) in socket socket.io-parser. EPSS 1.6% chance of exploitation in the next 30 days. Fixed in socket.io-parser 3.3.3, 3.4.2, 4.0.5.
Due to improper type validation in attachment parsing the Socket.io js library, it is possible to overwrite the _placeholder object which allows an attacker to place references to functions at arbitrary places in the resulting query object.
Severity
- EPSS
- 1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)
- CWE
- CWE-89
- Published
- Modified
- Record from
- the NVD, synced
Affected
- socket:socket.io-parser
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-qm95-pgcg-qqfq | npm | socket.io-parser | >=4.0.0 <4.0.5 | 4.0.5 |
| GHSA-qm95-pgcg-qqfq | npm | socket.io-parser | >=4.1.0 <4.2.1 | 4.2.1 |
| GHSA-qm95-pgcg-qqfq | npm | socket.io-parser | <3.3.3 | 3.3.3 |
| GHSA-qm95-pgcg-qqfq | npm | socket.io-parser | >=3.4.0 <3.4.2 | 3.4.2 |