RCE in Blitz-Js Superjson
CVE-2022-23631
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.
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.023 (81.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Blitz-js Superjson — versions < 1.8.0
- Blitzjs Blitz
- Blitzjs Superjson
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)
- security-advisories@github.com (Exploit, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2022-23631?
- CVE-2022-23631 is a critical-severity vulnerability in Blitz-Js Superjson, classified under Code Injection. CVSS score: 9.0/10. Published 2022-02-09.
- How severe is CVE-2022-23631?
- Critical severity. CVSS v3 base score is 9.0 out of 10.