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CVE-2022-23631

24
FAUCET Score

CVE-2022-23631 is a critical vulnerability in superjson versions prior to 1.8.1, affecting products like blitzjs blitz and blitzjs superjson. It allows unauthenticated attackers to execute arbitrary code on a server by sending specially crafted input, provided the server processes superjson data. With a CVSS score of 9.8 (CRITICAL), this vulnerability has a network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.45.3CPE matchmatch criteria
cpe:2.3:a:blitzjs:blitz:*:*:*:*:*:node.js:*:*
< 1.8.1CPE matchmatch criteria
cpe:2.3:a:blitzjs:superjson:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

9.0CRITICAL

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.33%
Probability of exploitation in next 30 days
EPSS Percentile
81.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0233 is in the 71st percentile among its peer group of 36,835 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

npmpatch availablevia ghsa
Product: superjsonFixed in: 1.8.1
npmpatch availablevia ghsa
Product: blitzFixed in: 0.45.3

Vendor Advisories (1)

npmGHSA-5888-ffcr-r425critical

Prototype Pollution leading to Remote Code Execution in superjson

Feb 9, 2022

References

github.com / advisories/GHSA-5888-ffcr-r425
ExploitThird Party Advisory
github.com / blitz-js/superjson/security/advisories/GHSA-5888-ffcr-r425
ExploitThird Party Advisory
sonarsource.com / blog/blitzjs-prototype-pollution
ExploitThird Party Advisory