Vulnerability · Published Jan 7, 2022 · Assigned by snyk
CVE-2021-23543Sandbox Bypass
Critical 9.8
In plain English
A critical-severity security flaw in realms-shim. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 79% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)1.8%top 21.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
All versions of package realms-shim are vulnerable to Sandbox Bypass via a Prototype Pollution attack vector.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | realms-shim | no fix listed | GHSA-q4j7-v27r-fgcx |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | realms-shim | 0 – before unspecified |
References
- https://www.npmjs.com/package/realms-shim x_refsource_MISC
- https://snyk.io/vuln/SNYK-JS-REALMSSHIM-2309908 x_refsource_MISC