{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-12209 exists.","fix":"No fix has been published for CVE-2026-12209 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-12209 is a medium-severity code injection vulnerability in RubyLouvre avalon, published on 15 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-12209 and fix it if it is affected.\n\nWhat it is: CVE-2026-12209 is a medium-severity code injection vulnerability in RubyLouvre avalon, published on 15 Jun 2026. 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-2026-12209 exists.\n\nAffected product: RubyLouvre avalon. 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-2026-12209/ (Markdown: https://insights.sbomify.com/CVE-2026-12209/index.md)","id":"CVE-2026-12209","markdown":"https://insights.sbomify.com/CVE-2026-12209/index.md","name":"CVE-2026-12209","record":{"aliases":["GHSA-785f-3qgq-ghq3"],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript template library","requires_auth":"none","summary":"Remote attackers can exploit prototype pollution in the RubyLouvre avalon template filter to execute arbitrary code or escalate privileges.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"},{"id":"CWE-1321","name":"Improperly Controlled Modification of Object Prototype Attributes"}],"description":"A security vulnerability has been detected in RubyLouvre avalon up to 2.2.10. The impacted element is an unknown function of the file src/filters/index.js of the component Template Filter Handler. Such manipulation leads to improperly controlled modification of object prototype attributes. It is possible to launch the attack remotely. 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":null,"headline":"RubyLouvre avalon Template Filter index.js prototype pollution","id":"CVE-2026-12209","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"universal-tool-calling-protocol python-utcp utcp-gql/utcp-websocket server-side request forgery","id":"CVE-2026-12210"},"packages":[],"prev":{"headline":"jsonata-js jsonata Function Binding Frame System jsonata.js createFrame prototype pollution","id":"CVE-2026-12208"},"products":["avalon"],"published":"2026-06-15","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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-15","vendors":["RubyLouvre"]},"summary":"Remote attackers can exploit prototype pollution in the RubyLouvre avalon template filter to execute arbitrary code or escalate privileges.","url":"https://insights.sbomify.com/CVE-2026-12209/"}