{"answers":{"affected":"2 open source packages ship an affected version, including realms-shim.","exploited":"There is no known exploitation of GHSA-7cg8-pq9v-x98q in the wild and no public exploit code.","fix":"Upgrade realms-shim to 1.2.1 or later.","what":"GHSA-7cg8-pq9v-x98q is a code injection vulnerability in realms-shim, published on 21 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for GHSA-7cg8-pq9v-x98q and fix it if it is affected.\n\nWhat it is: GHSA-7cg8-pq9v-x98q is a code injection vulnerability in realms-shim, published on 21 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of GHSA-7cg8-pq9v-x98q in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- realms-shim (npm): affected all versions; fixed in 1.2.1\n- realms-shim (npm): affected all versions; fixed in 1.2.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/GHSA-7cg8-pq9v-x98q/ (Markdown: https://insights.sbomify.com/GHSA-7cg8-pq9v-x98q/index.md)","id":"GHSA-7cg8-pq9v-x98q","markdown":"https://insights.sbomify.com/GHSA-7cg8-pq9v-x98q/index.md","name":"GHSA-7cg8-pq9v-x98q","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript sandbox library","requires_auth":"none","summary":"Attackers can break out of the realms-shim sandbox by providing a malicious rewriter function, leading to arbitrary code execution.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Versions of `realms-shim` prior to 1.2.1 are vulnerable to a Sandbox Breakout. The Realms evaluation function has an option to apply Babel-like transformations to the source code before it reaches the evaluator. One portion of this transform pipeline exposed a primal-Realm object to the rewriting function. Confined code which used the evaluator itself could provide a malicious rewriter function that captured this object, and use it to breach the sandbox.\n\n## Recommendation\n\nUpgrade to version 1.2.1 or later.","ecosystems":["npm"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":true,"headline":"Sandbox Breakout in realms-shim","id":"GHSA-7cg8-pq9v-x98q","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"npm","product":null,"products":[],"type":"code_injection","year":"2019"},"n_packages":2,"n_references":null,"packages":[{"ecosystem":"npm","fixed":["1.2.1"],"introduced":["0"],"last_affected":[],"package":"realms-shim","purl":null,"source":"GHSA-7cg8-pq9v-x98q"},{"ecosystem":"npm","fixed":["1.2.1"],"introduced":["0"],"last_affected":[],"package":"realms-shim","purl":"pkg:npm/realms-shim","source":"GHSA-7cg8-pq9v-x98q"}],"products":null,"published":"2019-10-21","related":[],"sources":[{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"Attackers can break out of the realms-shim sandbox by providing a malicious rewriter function, leading to arbitrary code execution.","url":"https://insights.sbomify.com/GHSA-7cg8-pq9v-x98q/"}