{"id":"CVE-2023-26478","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-26478","generatedAt":"2026-10-23T06:08:34.240Z","title":"This class is not supported to be exposed to users without the `programing` right. `com.xpn.xwiki.api.Attachment` should be used instead and takes case of checking the user's rights before performing dangerous operations.","description":"XWiki Platform is a generic wiki platform. Starting in version 14.3-rc-1, `org.xwiki.store.script.TemporaryAttachmentsScriptService#uploadTemporaryAttachment` returns an instance of `com.xpn.xwiki.doc.XWikiAttachment`. This class is not supported to be exposed to users without the `programing` right.\n`com.xpn.xwiki.api.Attachment` should be used instead and takes case of checking the user's rights before performing dangerous operations. This has been patched in versions 14.9-rc-1 and 14.4.6. There are no known workarounds for this issue.","published":"2023-03-02T18:15:11.000Z","lastModified":"2026-06-17T05:43:25.000Z","status":"Modified","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-749"],"affected":["xwiki/xwiki"],"epss":{"score":0.0067,"percentile":0.51378,"date":"2026-10-22","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.67%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/xwiki/xwiki-platform/commit/3c73c59e39b6436b1074d8834cf276916010014d","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-8692-g6g9-gm5p","tags":["Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://jira.xwiki.org/browse/XWIKI-20180","tags":["Exploit","Issue Tracking","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/xwiki/xwiki-platform/commit/3c73c59e39b6436b1074d8834cf276916010014d","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-8692-g6g9-gm5p","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://jira.xwiki.org/browse/XWIKI-20180","tags":["Exploit","Issue Tracking","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-26478","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}