{"id":"CVE-2025-29790","aliases":["EUVD-2025-6706","GHSA-vqqr-fgmh-f626"],"status":"published","title":"Contao allows cross-site scripting through SVG uploads","description":"Contao is an Open Source CMS. Users can upload SVG files with malicious code, which is then executed in the back end and/or front end. This vulnerability is fixed in Contao 4.13.54, 5.3.30, or 5.5.6.","severity":{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00225,"percentile":0.13237,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2025-03-18T18:36:34Z","modified":"2026-10-28T02:31:09Z","fixes":[{"ecosystem":"Packagist","package":"contao/core-bundle","fixed_in":["4.13.54","5.3.30","5.5.6"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.13.54"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.3.0"},{"fixed":"5.3.30"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"fixed":"5.5.6"}]}]},{"source":"osv","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.13.54"}]}],"versions":["4.0.0","4.0.1","4.0.2","4.0.3","4.0.4","4.1.0","4.1.0-RC1","4.1.0-beta1","4.1.1","4.1.2","4.1.3","4.10.0","4.10.0-RC1","4.10.0-RC2","4.10.0-RC3","4.10.0-RC4","4.10.1","4.10.2","4.10.3","4.10.4","4.10.5","4.10.6","4.10.7","4.11.0","4.11.0-RC1","4.11.0-RC2","4.11.1","4.11.2","4.11.3","4.11.4","4.11.5","4.11.6","4.11.7","4.11.8","4.11.9","4.12.0","4.12.0-RC1","4.12.0-RC2","4.12.0-RC3","4.12.1","4.12.2","4.12.3","4.12.4","4.12.5","4.12.6","4.12.7","4.13.0","4.13.0-RC1","4.13.0-RC2","4.13.0-RC3","4.13.1","4.13.10","4.13.11","4.13.12","4.13.13","4.13.14","4.13.15","4.13.16","4.13.17","4.13.18","4.13.19","4.13.2","4.13.20","4.13.21","4.13.22","4.13.23","4.13.24","4.13.25","4.13.26","4.13.27","4.13.28","4.13.29","4.13.3","4.13.30","4.13.31","4.13.32","4.13.33","4.13.34","4.13.35","4.13.36","4.13.37","4.13.38","4.13.39","4.13.4","4.13.40","4.13.41","4.13.42","4.13.43","4.13.44","4.13.45","4.13.46","4.13.47","4.13.48","4.13.49","4.13.5","4.13.50","4.13.51","4.13.52","4.13.53","4.13.6","4.13.7","4.13.8","4.13.9","4.2.0","4.2.0-RC1","4.2.0-beta1","4.2.1","4.2.2","4.2.3","4.2.4","4.2.5","4.3.0","4.3.0-RC1","4.3.1","4.3.10","4.3.11","4.3.2","4.3.3","4.3.4","4.3.5","4.3.6","4.3.7","4.3.8","4.3.9","4.4.0","4.4.0-RC1","4.4.0-RC2","4.4.0-beta1","4.4.1","4.4.10","4.4.11","4.4.12","4.4.13","4.4.14","4.4.15","4.4.16","4.4.17","4.4.18","4.4.19","4.4.2","4.4.20","4.4.21","4.4.22","4.4.23","4.4.24","4.4.25","4.4.26","4.4.27","4.4.28","4.4.29","4.4.3","4.4.30","4.4.31","4.4.32","4.4.33","4.4.34","4.4.35","4.4.36","4.4.37","4.4.38","4.4.39","4.4.4","4.4.40","4.4.41","4.4.42","4.4.43","4.4.44","4.4.45","4.4.46","4.4.47","4.4.48","4.4.49","4.4.5","4.4.50","4.4.51","4.4.52","4.4.53","4.4.54","4.4.55","4.4.56","4.4.57","4.4.6","4.4.7","4.4.8","4.4.9","4.5.0","4.5.0-RC1","4.5.0-RC2","4.5.0-beta1","4.5.0-beta2","4.5.0-beta3","4.5.1","4.5.10","4.5.11","4.5.12","4.5.13","4.5.14","4.5.2","4.5.3","4.5.4","4.5.5","4.5.6","4.5.7","4.5.8","4.5.9","4.6.0","4.6.0-RC1","4.6.0-RC2","4.6.0-RC3","4.6.1","4.6.10","4.6.11","4.6.12","4.6.13","4.6.14","4.6.2","4.6.3","4.6.4","4.6.5","4.6.6","4.6.7","4.6.8","4.6.9","4.7.0","4.7.0-RC1","4.7.0-RC2","4.7.0-RC3","4.7.0-RC4","4.7.1","4.7.2","4.7.3","4.7.4","4.7.5","4.7.6","4.7.7","4.8.0","4.8.0-RC1","4.8.0-RC2","4.8.1","4.8.2","4.8.3","4.8.4","4.8.5","4.8.6","4.8.7","4.8.8","4.9.0","4.9.0-RC1","4.9.0-RC2","4.9.1","4.9.10","4.9.11","4.9.12","4.9.13","4.9.14","4.9.15","4.9.16","4.9.17","4.9.18","4.9.19","4.9.2","4.9.20","4.9.21","4.9.22","4.9.23","4.9.24","4.9.25","4.9.26","4.9.27","4.9.28","4.9.29","4.9.3","4.9.30","4.9.31","4.9.32","4.9.33","4.9.34","4.9.35","4.9.36","4.9.37","4.9.38","4.9.39","4.9.4","4.9.40","4.9.41","4.9.42","4.9.5","4.9.6","4.9.7","4.9.8","4.9.9"]},{"source":"osv","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.3.0"},{"fixed":"5.3.30"}]}],"versions":["5.3.0","5.3.1","5.3.10","5.3.11","5.3.12","5.3.13","5.3.14","5.3.15","5.3.16","5.3.17","5.3.18","5.3.19","5.3.2","5.3.20","5.3.21","5.3.22","5.3.23","5.3.24","5.3.25","5.3.26","5.3.27","5.3.28","5.3.29","5.3.3","5.3.4","5.3.5","5.3.6","5.3.7","5.3.8","5.3.9"]},{"source":"osv","ecosystem":"Packagist","package":"contao/core-bundle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.4.0"},{"fixed":"5.5.6"}]}],"versions":["5.4.0","5.4.1","5.4.10","5.4.11","5.4.12","5.4.13","5.4.14","5.4.2","5.4.3","5.4.4","5.4.5","5.4.6","5.4.7","5.4.8","5.4.9","5.5.0","5.5.0-RC1","5.5.0-RC2","5.5.0-RC3","5.5.0-RC4","5.5.1","5.5.2","5.5.3","5.5.4","5.5.5"]}],"products":[{"vendor":"contao","product":"contao"}],"references":[{"url":"https://github.com/contao/contao/security/advisories/GHSA-vqqr-fgmh-f626","tags":["x_refsource_CONFIRM","Patch","Third Party Advisory","advisory","web"]},{"url":"https://contao.org/en/security-advisories/cross-site-scripting-through-svg-uploads","tags":["x_refsource_MISC","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-29790","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-vqqr-fgmh-f626"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/29xxx/CVE-2025-29790.json","tags":["advisory"]},{"url":"https://github.com/contao/contao","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-29790","title":"Contao allows cross-site scripting through SVG uploads","description":"Contao is an Open Source CMS. Users can upload SVG files with malicious code, which is then executed in the back end and/or front end. This vulnerability is fixed in Contao 4.13.54, 5.3.30, or 5.5.6.","status":"published","published":"2025-03-18T18:36:34.279Z","modified":"2025-03-18T18:48:39.399Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:32:45.797843Z"}],"euvd":[{"id":"EUVD-2025-6706","description":"Contao is an Open Source CMS. Users can upload SVG files with malicious code, which is then executed in the back end and/or front end. This vulnerability is fixed in Contao 4.13.54, 5.3.30, or 5.5.6.","status":"published","published":"2025-03-18T18:36:34Z","modified":"2025-03-18T18:48:39Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium"}],"updated_at":"2026-11-02T20:52:59.954045Z"}],"ghsa":[{"id":"GHSA-vqqr-fgmh-f626","title":"Contao Vulnerable to Cross-Site Scripting (XSS) through SVG uploads","description":"### Impact\n\nUsers can upload SVG files with malicious code, which is then executed in the back end and/or front end.\n\n### Patches\n\nUpdate to Contao 4.13.54, 5.3.30 or 5.5.6.\n\n### Workarounds\n\nRemove `svg,svgz` from the allowed upload file types in the system settings and from `contao.editable_files` in the `config.yaml`.\n\n### References\n\nhttps://contao.org/en/security-advisories/cross-site-scripting-through-svg-uploads\n\n### For more information\n\nIf you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).","status":"published","published":"2025-03-18T21:07:17Z","modified":"2025-03-19T15:41:48Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:38:35.74197Z"}],"nvd":[{"id":"CVE-2025-29790","description":"Contao is an Open Source CMS. Users can upload SVG files with malicious code, which is then executed in the back end and/or front end. This vulnerability is fixed in Contao 4.13.54, 5.3.30, or 5.5.6.","status":"published","published":"2025-03-18T19:15:50.813Z","modified":"2026-06-17T09:05:40.58Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:10:54.744127Z"}],"osv":[{"id":"CVE-2025-29790","title":"Contao allows cross-site scripting through SVG uploads","description":"Contao is an Open Source CMS. Users can upload SVG files with malicious code, which is then executed in the back end and/or front end. This vulnerability is fixed in Contao 4.13.54, 5.3.30, or 5.5.6.","status":"published","published":"2025-03-18T18:36:34.279Z","modified":"2026-10-28T02:31:09.156853944Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:47.708311Z"},{"id":"GHSA-vqqr-fgmh-f626","title":"Contao Vulnerable to Cross-Site Scripting (XSS) through SVG uploads","description":"### Impact\n\nUsers can upload SVG files with malicious code, which is then executed in the back end and/or front end.\n\n### Patches\n\nUpdate to Contao 4.13.54, 5.3.30 or 5.5.6.\n\n### Workarounds\n\nRemove `svg,svgz` from the allowed upload file types in the system settings and from `contao.editable_files` in the `config.yaml`.\n\n### References\n\nhttps://contao.org/en/security-advisories/cross-site-scripting-through-svg-uploads\n\n### For more information\n\nIf you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).","status":"published","published":"2025-03-18T21:07:17Z","modified":"2025-04-17T12:50:19.196893Z","cvss":[{"version":"4.0","score":4.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:57.694388Z"}]}}