{"id":"CVE-2026-45138","state":"PUBLISHED","title":"CI4MS: Stored XSS in Blog Content via Broken `html_purify` Validation Rule","description":"CI4MS is a CodeIgniter 4-based content management system skeleton. Prior to version 0.31.9.0, the custom `html_purify` validation rule used to sanitize blog post bodies relies on by-reference mutation (`?string &$str`), but CodeIgniter 4's validator passes a local copy of the value, so the sanitized text is silently discarded. The Blog controller writes `$lanData['content']` directly into `blog_langs.content`, and the public template echoes it without escaping — yielding stored XSS executable in any visitor's browser, including the superadmin when previewing or editing posts. Version 0.31.9.0 patches the issue.","publishedAt":"2026-07-19T23:18:51.312Z","updatedAt":"2026-07-20T13:18:54.966Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["ci4-cms-erp ci4ms"],"affected":[{"vendor":"ci4-cms-erp","product":"ci4ms","versions":[{"version":"< 0.31.9.0","status":"affected"}]}],"references":["https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-2m69-jmvh-6chr","https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.9.0"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45138.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45138","state":"PUBLISHED","datePublished":"2026-07-19T23:18:51.312Z","dateUpdated":"2026-07-20T13:18:54.966Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-08T20:44:38.962Z"},"containers":{"cna":{"title":"CI4MS: Stored XSS in Blog Content via Broken `html_purify` Validation Rule","descriptions":[{"lang":"en","value":"CI4MS is a CodeIgniter 4-based content management system skeleton. Prior to version 0.31.9.0, the custom `html_purify` validation rule used to sanitize blog post bodies relies on by-reference mutation (`?string &$str`), but CodeIgniter 4's validator passes a local copy of the value, so the sanitized text is silently discarded. The Blog controller writes `$lanData['content']` directly into `blog_langs.content`, and the public template echoes it without escaping — yielding stored XSS executable in any visitor's browser, including the superadmin when previewing or editing posts. Version 0.31.9.0 patches the issue."}],"affected":[{"vendor":"ci4-cms-erp","product":"ci4ms","versions":[{"version":"< 0.31.9.0","status":"affected"}]}],"references":[{"url":"https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-2m69-jmvh-6chr","name":"https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-2m69-jmvh-6chr","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.9.0","name":"https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.9.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-19T23:18:51.312Z"},"source":{"advisory":"GHSA-2m69-jmvh-6chr","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-2m69-jmvh-6chr","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-20T13:18:37.167276Z","id":"CVE-2026-45138","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-20T13:18:54.966Z"}}]}}}