{"id":"CVE-2026-12209","state":"PUBLISHED","title":"RubyLouvre avalon Template Filter index.js prototype pollution","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.","publishedAt":"2026-06-15T02:15:07.361Z","updatedAt":"2026-06-15T12:52:28.046Z","severity":{"score":6.9,"label":"Medium","version":"4.0","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","source":"VulDB"},"assigner":"VulDB","products":["RubyLouvre avalon"],"affected":[{"vendor":"RubyLouvre","product":"avalon","versions":[{"version":"2.2.0","status":"affected"},{"version":"2.2.1","status":"affected"},{"version":"2.2.2","status":"affected"},{"version":"2.2.3","status":"affected"},{"version":"2.2.4","status":"affected"},{"version":"2.2.5","status":"affected"},{"version":"2.2.6","status":"affected"},{"version":"2.2.7","status":"affected"},{"version":"2.2.8","status":"affected"},{"version":"2.2.9","status":"affected"},{"version":"2.2.10","status":"affected"}],"cpes":["cpe:2.3:a:rubylouvre:avalon:*:*:*:*:*:*:*:*"],"modules":["Template Filter Handler"]}],"references":["https://vuldb.com/vuln/370851","https://vuldb.com/vuln/370851/cti","https://vuldb.com/cve/CVE-2026-12209","https://vuldb.com/submit/832447","https://github.com/OriginSecurityX/avalon-filter-rce"],"weaknesses":["CWE-1321","CWE-94"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/12xxx/CVE-2026-12209.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-12209","state":"PUBLISHED","datePublished":"2026-06-15T02:15:07.361Z","dateUpdated":"2026-06-15T12:52:28.046Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-06-14T12:27:55.933Z"},"containers":{"cna":{"title":"RubyLouvre avalon Template Filter index.js prototype pollution","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"RubyLouvre","product":"avalon","versions":[{"version":"2.2.0","status":"affected"},{"version":"2.2.1","status":"affected"},{"version":"2.2.2","status":"affected"},{"version":"2.2.3","status":"affected"},{"version":"2.2.4","status":"affected"},{"version":"2.2.5","status":"affected"},{"version":"2.2.6","status":"affected"},{"version":"2.2.7","status":"affected"},{"version":"2.2.8","status":"affected"},{"version":"2.2.9","status":"affected"},{"version":"2.2.10","status":"affected"}],"cpes":["cpe:2.3:a:rubylouvre:avalon:*:*:*:*:*:*:*:*"],"modules":["Template Filter Handler"]}],"references":[{"url":"https://vuldb.com/vuln/370851","name":"VDB-370851 | RubyLouvre avalon Template Filter index.js prototype pollution","tags":["vdb-entry"]},{"url":"https://vuldb.com/vuln/370851/cti","name":"VDB-370851 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-12209","name":"CVE-2026-12209 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/832447","name":"Submit #832447 | RubyLouvre avalon 0.9.9 - 2.2.10 Code Injection / Prototype Pollution","tags":["third-party-advisory"]},{"url":"https://github.com/OriginSecurityX/avalon-filter-rce","tags":["exploit"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":6.9,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":5.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":5.3,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":5,"vectorString":"AV:N/AC:L/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1321","type":"CWE","lang":"en","description":"Improperly Controlled Modification of Object Prototype Attributes"}]},{"descriptions":[{"cweId":"CWE-94","type":"CWE","lang":"en","description":"Code Injection"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-06-15T02:15:07.361Z"},"timeline":[{"time":"2026-06-14T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-06-14T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-06-14T14:32:59.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Frederick (VulDB User)","type":"reporter"},{"lang":"en","value":"VulDB CNA Team","type":"coordinator"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-15T12:52:08.917862Z","id":"CVE-2026-12209","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-15T12:52:28.046Z"}}]}}}