{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13502 exists.","fix":"No fix published yet.","what":"CVE-2026-13502 is a low-severity 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-2026-13502 and fix it if it is affected.\n\nWhat it is: CVE-2026-13502 is a low-severity 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-2026-13502 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-2026-13502/ (Markdown: https://insights.sbomify.com/CVE-2026-13502/index.md)","id":"CVE-2026-13502","markdown":"https://insights.sbomify.com/CVE-2026-13502/index.md","name":"CVE-2026-13502","record":{"aliases":["DEBIAN-CVE-2026-13502","GHSA-h73j-vjhq-j9vg","UBUNTU-CVE-2026-13502"],"analysis":{"component_type":"developer_tool","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"ANTLR4 Maven Plugin","requires_auth":"low_privilege","summary":"A time-of-check time-of-use race condition in the ANTLR4 Maven Plugin allows local attackers to potentially execute arbitrary code via deserialization.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":2,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:L/AC:H/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-367","name":"Time-of-check Time-of-use (TOCTOU) Race Condition"},{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization"}],"description":"A flaw has been found in antlr ANTLR4 up to 4.13.2. This affects the function ObjectInputStream.readObject of the file antlr4-maven-plugin/src/main/java/org/antlr/mojo/antlr4/GrammarDependencies.java of the component Maven Plugin. This manipulation causes time-of-check time-of-use. The attack is restricted to local execution. A high degree of complexity is needed for the attack. It is indicated that the exploitability is difficult. The exploit has been published 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 Maven Plugin GrammarDependencies.java ObjectInputStream.readObject toctou","id":"CVE-2026-13502","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"race_condition","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"antlr ANTLR4 tokenVocab Grammar Option TokenVocabParser.java getImportedVocabFile path traversal","id":"CVE-2026-13503"},"packages":[],"prev":{"headline":"antlr ANTLR4 gofmt GoTarget.java GoTarget command injection","id":"CVE-2026-13501"},"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":"A time-of-check time-of-use race condition in the ANTLR4 Maven Plugin allows local attackers to potentially execute arbitrary code via deserialization.","url":"https://insights.sbomify.com/CVE-2026-13502/"}