EUVD-2026-5589

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, there is a sandbox escape vulnerability due to a mismatch between the key on which the validation is performed and the key used for accessing properties. Even though the key used in property accesses is annotated as string, this is...

CVE-2026-25641 SandboxJS has a sandbox escape via TOCTOU bug on keys in property accesses

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, there is a sandbox escape vulnerability due to a mismatch between the key on which the validation is performed and the key used for accessing properties. Even though the key used in property accesses is annotated as string, this is...

CVE-2026-25641 SandboxJS has a sandbox escape via TOCTOU bug on keys in property accesses

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, there is a sandbox escape vulnerability due to a mismatch between the key on which the validation is performed and the key used for accessing properties. Even though the key used in property accesses is annotated as string, this is...

CVE-2026-25520: Improper Neutralization of Special Elements in Output Used by a Downstream Component

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, The return values of functions aren't wrapped. Object.values/Object.entries can be used to get an Array containing the host's Function constructor, by using Array.prototype.at you can obtain the hosts Function constructor, which can b...

CVE-2026-25587: Improper Control of Generation of Code

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, as Map is in SAFEPROTOYPES, it's prototype can be obtained via Map.prototype. By overwriting Map.prototype.has the sandbox can be escaped. This vulnerability is fixed in 0.8.29...

CVE-2026-25641: Time-of-check Time-of-use (TOCTOU) Race Condition

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, there is a sandbox escape vulnerability due to a mismatch between the key on which the validation is performed and the key used for accessing properties. Even though the key used in property accesses is annotated as string, this is...

SandboxJS security vulnerability

SandboxJS is a security assessment tool developed by nyariv. Versions of SandboxJS prior to 0.8.29 contained a security vulnerability that could lead to sandbox escape by overriding Map.prototype.has...

SandboxJS security vulnerability

SandboxJS is a security assessment tool developed by nyariv’s individual developer. Versions of SandboxJS prior to 0.8.29 contained a security vulnerability. This vulnerability stemmed from the use of hasOwnProperty to mask objects in the sandbox, allowing sandbox escape and disabling the prototy...

SandboxJS security vulnerability

SandboxJS is a security assessment tool developed by nyariv. Versions of SandboxJS prior to 0.8.29 contained a security vulnerability. This vulnerability stemmed from the execution of validation keys that did not match the keys used to access properties, which could lead to sandbox escape...

SandboxJS security vulnerability

SandboxJS is a security assessment tool developed by nyariv’s individual developer. Versions of SandboxJS prior to 0.8.29 contained security vulnerabilities; these vulnerabilities stemmed from unboxed function return values, which could allow arbitrary code to be executed outside of the sandbox...

CVE-2026-25586: Improper Neutralization of Special Elements in Output Used by a Downstream Component

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, a sandbox escape is possible by shadowing hasOwnProperty on a sandbox object, which disables prototype whitelist enforcement in the property-access path. This permits direct access to proto and other blocked prototype properties,...

@afidos/nestjs-event-notifications (>=2.2.1, <=2.2.2), @mieweb/wikigdrive (>=2.15.0, <=2.17.1) +3 more potentially affected by CVE-2026-25641 via @nyariv/sandboxjs (>=0.5.3, <=0.8.25)

@nyariv/sandboxjs NPM version =0.5.3, =2.2.1, =2.15.0, =0.2.0, =11.0.0, =12.0.1 Source cves: CVE-2026-25641 Source advisory: GHSA-7X3H-RM86-3342...

@afidos/nestjs-event-notifications (>=2.2.1, <=2.2.2), @mieweb/wikigdrive (>=2.15.0, <=2.17.1) +3 more potentially affected by CVE-2026-25641 via @nyariv/sandboxjs (>=0.5.3, <=0.8.25)

@nyariv/sandboxjs NPM version =0.5.3, =2.2.1, =2.15.0, =0.2.0, =11.0.0, =12.0.1 Source cves: CVE-2026-25641 Source advisory: SNYK:JS-NYARIVSANDBOXJS-15248293...

@afidos/nestjs-event-notifications (>=2.2.1, <=2.2.2), @mieweb/wikigdrive (>=2.15.0, <=2.17.1) +3 more potentially affected by CVE-2026-25641 via @nyariv/sandboxjs (>=0.5.3, <=0.8.25)

@nyariv/sandboxjs NPM version =0.5.3, =2.2.1, =2.15.0, =0.2.0, =11.0.0, =12.0.1 Source cves: CVE-2026-25641 Source advisory: OSV:GHSA-7X3H-RM86-3342...

Time-of-check Time-of-use (TOCTOU) Race Condition

Overview @nyariv/sandboxjs is a Javascript sandboxing library. Affected versions of this package are vulnerable to Time-of-check Time-of-use TOCTOU Race Condition in addOps and other methods in executor.ts, which do not enforce the type of property keys. An attacker can execute arbitrary code on...

GHSA-7X3H-RM86-3342 @nyariv/sandboxjs vulnerable to sandbox escape via TOCTOU bug on keys in property accesses

Summary A sandbox escape vulnerabilities due to a mismatch between the key on which the validation is performed and the key used for accessing properties. Details Even though the key used in property accesses b in the code below is annotated as string, this is never enforced:...

@afidos/nestjs-event-notifications (>=2.2.1, <=2.2.2), @mieweb/wikigdrive (>=2.15.0, <=2.17.1) +3 more potentially affected by CVE-2026-25587 via @nyariv/sandboxjs (>=0.5.3, <=0.8.25)

@nyariv/sandboxjs NPM version =0.5.3, =2.2.1, =2.15.0, =0.2.0, =11.0.0, =12.0.1 Source cves: CVE-2026-25587 Source advisory: GHSA-66H4-QJ4X-38XP...

@afidos/nestjs-event-notifications (>=2.2.1, <=2.2.2), @mieweb/wikigdrive (>=2.15.0, <=2.17.1) +3 more potentially affected by CVE-2026-25142 +1 more via @nyariv/sandboxjs (>=0.5.3, <=0.8.25)

@nyariv/sandboxjs NPM version =0.5.3, =2.2.1, =2.15.0, =0.2.0, =11.0.0, =12.0.1 Source cves: CVE-2026-25142, CVE-2026-25587 Source advisory: SNYK:JS-NYARIVSANDBOXJS-15248292...

@afidos/nestjs-event-notifications (>=2.2.1, <=2.2.2), @mieweb/wikigdrive (>=2.15.0, <=2.17.1) +3 more potentially affected by CVE-2026-25587 via @nyariv/sandboxjs (>=0.5.3, <=0.8.25)

@nyariv/sandboxjs NPM version =0.5.3, =2.2.1, =2.15.0, =0.2.0, =11.0.0, =12.0.1 Source cves: CVE-2026-25587 Source advisory: OSV:GHSA-66H4-QJ4X-38XP...

Arbitrary Code Injection

Overview @nyariv/sandboxjs is a Javascript sandboxing library. Affected versions of this package are vulnerable to Arbitrary Code Injection by overriding the Map.prototype.has method. An attacker can execute arbitrary code on the underlying operating system because Map is included in SAFEPROTOYPE...