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CVE

CVE-2026-25142

SandboxJS Prototype Pollution -> Sandbox Escape -> RCE
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CVE

CVE-2026-25142

SandboxJS Prototype Pollution -> Sandbox Escape -> RCE

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.27, SanboxJS does not properly restrict lookupGetter which can be used to obtain prototypes, which can be used for escaping the sandbox / remote code execution. This vulnerability is fixed in 0.8.27.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
10
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
10
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Related Resources

No items found.

References

https://github.com/nyariv/SandboxJS/blob/f212a38fb5a6d4bc2bc2e2466c0c011ce8d41072/src/executor.ts#L368-L398, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25142.json, https://github.com/nyariv/SandboxJS/security/advisories/GHSA-9p4w-fq8m-2hp7, https://nvd.nist.gov/vuln/detail/CVE-2026-25142, https://github.com/nyariv/SandboxJS/commit/75c8009db32e6829b0ad92ca13bf458178442bd3

Severity

10

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
10
EPSS Probability
0.0022%
EPSS Percentile
0.44428%
Introduced Version
0
Fix Available
75c8009db32e6829b0ad92ca13bf458178442bd3

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