CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2022-23631
Critical (9.8) in blitzjs. EPSS 2.7% chance of exploitation in the next 30 days. Fixed in superjson 1.8.1.
superjson is a program to allow JavaScript expressions to be serialized to a superset of JSON. In versions prior to 1.8.1 superjson allows input to run arbitrary code on any server using superjson input without prior authentication or knowledge. The only requirement is that the server implements at least one endpoint which uses superjson during request processing. This has been patched in superjson 1.8.1. Users are advised to update. There are no known workarounds for this issue.
Severity
- EPSS
- 2.7% chance of exploitation in the next 30 days; higher than 85% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-1321, CWE-94
- Published
- Modified
- Record from
- the NVD, synced
Affected
- blitzjs:blitz
- blitzjs:superjson
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-5888-ffcr-r425 | npm | superjson | <1.8.1 | 1.8.1 |
| GHSA-5888-ffcr-r425 | npm | blitz | <0.45.3 | 0.45.3 |
References
- https://github.com/advisories/GHSA-5888-ffcr-r425
- https://github.com/blitz-js/superjson/security/advisories/GHSA-5888-ffcr-r425
- https://www.sonarsource.com/blog/blitzjs-prototype-pollution/
- https://github.com/advisories/GHSA-5888-ffcr-r425
- https://github.com/blitz-js/superjson/security/advisories/GHSA-5888-ffcr-r425