{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13501 exists.","fix":"No fix published yet.","what":"CVE-2026-13501 is a medium-severity command injection vulnerability in ANTLR4, published on 28 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-13501 and fix it if it is affected.\n\nWhat it is: CVE-2026-13501 is a medium-severity command injection vulnerability in ANTLR4, published on 28 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13501 exists.\n\nAffected product: ANTLR4. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-13501/ (Markdown: https://insights.sbomify.com/CVE-2026-13501/index.md)","id":"CVE-2026-13501","markdown":"https://insights.sbomify.com/CVE-2026-13501/index.md","name":"CVE-2026-13501","record":{"aliases":["DEBIAN-CVE-2026-13501","GHSA-q226-w36v-hhxv","UBUNTU-CVE-2026-13501"],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"ANTLR4 parser generator","requires_auth":"low_privilege","summary":"Local attackers can execute arbitrary commands via the gofmt component in ANTLR4, posing a risk to developers using the library.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":4.8,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-77","name":"Improper Neutralization of Special Elements used in a Command"},{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"A security vulnerability has been detected in antlr ANTLR4 up to 4.13.2. Affected by this vulnerability is the function GoTarget of the file tool/src/org/antlr/v4/codegen/target/GoTarget.java of the component gofmt. The manipulation leads to command injection. The attack can only be performed from a local environment. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"antlr ANTLR4 gofmt GoTarget.java GoTarget command injection","id":"CVE-2026-13501","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"antlr ANTLR4 Maven Plugin GrammarDependencies.java ObjectInputStream.readObject toctou","id":"CVE-2026-13502"},"packages":[],"prev":{"headline":"antlr ANTLR4 Grammar Action Block OutputFile.java code injection","id":"CVE-2026-13500"},"products":["ANTLR4"],"published":"2026-06-28","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-29","vendors":["antlr"]},"summary":"Local attackers can execute arbitrary commands via the gofmt component in ANTLR4, posing a risk to developers using the library.","url":"https://insights.sbomify.com/CVE-2026-13501/"}