{"answers":{"affected":"6 open source packages ship an affected version, including deno and deno_runtime. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-48934 exists.","fix":"Upgrade deno to a fixed version for your release line: 2.1.13 or 2.2.13.","what":"CVE-2025-48934 is a medium-severity vulnerability in denoland deno, published on 4 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-48934 and fix it if it is affected.\n\nWhat it is: CVE-2025-48934 is a medium-severity vulnerability in denoland deno, published on 4 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-48934 exists.\n\nAffected packages and fixed versions:\n- deno (crates.io): affected all versions; fixed in 2.1.13\n- deno (crates.io): affected all versions; fixed in 2.1.13\n- deno (crates.io): affected from 2.2.0; fixed in 2.2.13\n- deno (crates.io): affected from 2.2.0; fixed in 2.2.13\n- deno_runtime (crates.io): affected all versions; fixed in 0.212.0\n- deno_runtime (crates.io): affected all versions; fixed in 0.212.0\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/CVE-2025-48934/ (Markdown: https://insights.sbomify.com/CVE-2025-48934/index.md)","id":"CVE-2025-48934","markdown":"https://insights.sbomify.com/CVE-2025-48934/index.md","name":"CVE-2025-48934","record":{"aliases":["GHSA-7w8p-chxq-2789","JLSEC-2026-110"],"analysis":{"component_type":"developer_tool","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"Deno runtime","requires_auth":"none","summary":"Attackers can bypass --deny-env restrictions to read all environment variables, including secrets, via Deno.env.toObject().","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"deno","vendor":"deno"}],"cvss":{"score":5.5,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-201","name":"Insertion of Sensitive Information Into Sent Data"}],"description":"Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to versions 2.1.13 and 2.2.13, the `Deno.env.toObject` method ignores any variables listed in the `--deny-env` option of the `deno run` command. When looking at the documentation of the `--deny-env` option this might lead to a false impression that variables listed in the option are impossible to read. Software relying on the combination of both flags to allow access to most environment variables except a few sensitive ones will be vulnerable to malicious code trying to steal secrets using the `Deno.env.toObject()` method. Versions 2.1.13 and 2.2.13 contains a patch.","ecosystems":["crates.io"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Deno.env.toObject() ignores the variables listed in --deny-env and returns all environment variables","id":"CVE-2025-48934","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"security_feature_bypass","year":"2025"},"n_packages":6,"n_references":6,"next":{"headline":"Deno has --allow-read / --allow-write permission bypass in `node:sqlite`","id":"CVE-2025-48935"},"packages":[{"ecosystem":"crates.io","fixed":["2.1.13"],"introduced":["0"],"last_affected":[],"package":"deno","purl":null,"source":"GHSA-7w8p-chxq-2789"},{"ecosystem":"crates.io","fixed":["2.1.13"],"introduced":["0"],"last_affected":[],"package":"deno","purl":"pkg:cargo/deno","source":"GHSA-7w8p-chxq-2789"},{"ecosystem":"crates.io","fixed":["2.2.13"],"introduced":["2.2.0"],"last_affected":[],"package":"deno","purl":null,"source":"GHSA-7w8p-chxq-2789"},{"ecosystem":"crates.io","fixed":["2.2.13"],"introduced":["2.2.0"],"last_affected":[],"package":"deno","purl":"pkg:cargo/deno","source":"GHSA-7w8p-chxq-2789"},{"ecosystem":"crates.io","fixed":["0.212.0"],"introduced":["0"],"last_affected":[],"package":"deno_runtime","purl":null,"source":"GHSA-7w8p-chxq-2789"},{"ecosystem":"crates.io","fixed":["0.212.0"],"introduced":["0"],"last_affected":[],"package":"deno_runtime","purl":"pkg:cargo/deno_runtime","source":"GHSA-7w8p-chxq-2789"}],"prev":{"headline":"Weak cryptography in service","id":"CVE-2025-48931"},"products":["deno"],"published":"2025-06-04","related":[{"cvss_score":10,"headline":"Deno improperly handles resizable ArrayBuffer","id":"CVE-2023-28445","kev_date_added":null,"published":"2023-03-23"},{"cvss_score":10,"headline":"Sandbox bypass leading to arbitrary code execution in Deno","id":"CVE-2022-24783","kev_date_added":null,"published":"2022-03-25"},{"cvss_score":9.8,"headline":"Static imports inside dynamically imported modules do not adhere to permission checks","id":"CVE-2021-32619","kev_date_added":null,"published":"2021-05-28"},{"cvss_score":9.2,"headline":"Deno node:crypto doesn't finalize cipher","id":"CVE-2026-22863","kev_date_added":null,"published":"2026-01-15"},{"cvss_score":8.8,"headline":"Deno interactive permission prompt spoofing via improper ANSI stripping","id":"CVE-2024-27936","kev_date_added":null,"published":"2024-03-06"},{"cvss_score":8.8,"headline":"Deno is vulnerable to interactive `run` permission prompt spoofing via improper ANSI neutralization","id":"CVE-2023-28446","kev_date_added":null,"published":"2023-03-24"},{"cvss_score":8.6,"headline":"Deno missing \"--allow-net\" permission check for built-in Node modules","id":"CVE-2023-33966","kev_date_added":null,"published":"2023-05-31"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-06-04","vendors":["denoland"]},"summary":"Attackers can bypass --deny-env restrictions to read all environment variables, including secrets, via Deno.env.toObject().","url":"https://insights.sbomify.com/CVE-2025-48934/"}