{"id":"CVE-2026-116876","kind":"vulnerability","aliases":["CVE-2026-116876"],"related":[],"title":"Semantic MediaWiki: ordinary editors can lock pages permanently via annotation","description":"Semantic MediaWiki from 2.5.0 before 7.3.1 contains an improper authorization vulnerability that allows ordinary editors to permanently protect pages by adding an Is edit protected annotation. When $smwgEditProtectionRight is enabled, EditProtectionUpdater applies indefinite edit and move restrictions without checking the author's rights, locking other editors and administrators out.","summary":"Semantic MediaWiki from 2.5.0 before 7.3.1 lets any ordinary editor add an 'Is edit protected' annotation that sets indefinite edit and move restrictions on a page. The check that the author holds the right to protect pages is missing, so the editor locks out other editors and administrators.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["mediawiki","package","php","self-hosted","semantic-mediawiki"],"not_affected_if":["default-config","patched-version"],"how_to_check":"- Check the installed Semantic MediaWiki version in Special:Version or in composer.lock for `mediawiki/semantic-media-wiki`\n- Check whether `$smwgEditProtectionRight` is set in LocalSettings.php (unknown if the sources do not say which default applies)","fix":"- Upgrade Semantic MediaWiki to `7.3.1` or later\n- Until upgraded, leave `$smwgEditProtectionRight` disabled (unknown whether this fully closes the flaw)","status":"open","published_at":"2026-10-27T11:17:29+00:00","first_seen_at":"2026-10-27T11:31:27+00:00","triaged_at":"2026-10-27T11:31:54+00:00","updated_at":"2026-10-27T11:31:54+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-27T11:31:54Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade Semantic MediaWiki to `7.3.1` or later\n- Until upgraded, leave `$smwgEditProtectionRight` disabled (unknown whether this fully closes the flaw)","reach":"network","title":"Semantic MediaWiki: ordinary editors can lock pages permanently via annotation","impact":"medium","summary":"Semantic MediaWiki from 2.5.0 before 7.3.1 lets any ordinary editor add an 'Is edit protected' annotation that sets indefinite edit and move restrictions on a page. The check that the author holds the right to protect pages is missing, so the editor locks out other editors and administrators.","category":"package","nicknames":[],"who_cares":["mediawiki","semantic-mediawiki","self-hosted","php"],"confidence":0.7,"needs_auth":"yes","worst_case":"Ordinary editors permanently lock pages against other editors and admins","analyst_note":"","how_to_check":"- Check the installed Semantic MediaWiki version in Special:Version or in composer.lock for `mediawiki/semantic-media-wiki`\n- Check whether `$smwgEditProtectionRight` is set in LocalSettings.php (unknown if the sources do not say which default applies)","needs_analyst":false,"not_affected_if":["default-config","patched-version"],"who_is_affected":"Wikis running Semantic MediaWiki between 2.5.0 and 7.3.1 are exposed, and the flaw only matters when `$smwgEditProtectionRight` is enabled. Wikis that do not enable that setting, or that already run 7.3.1 or later, can skip it. Wikis where untrusted or broadly granted editors can change pages are the ones most at risk.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"unknown"},"cost_usd":0.000653,"input_tokens":3358,"output_tokens":635,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-116876':13A,16A '-2026':12A,15A '2.5.0':29B,77C '7.3.1':31B,79C 'add':36B,94C 'administr':73B,121C 'allow':86C 'annot':10A,41B,99C 'appli':105C 'author':56B,83C,114C 'check':53B,112C 'contain':80C 'cve':11A,14A 'edit':39B,45B,97C,107C 'editor':4A,35B,67B,71B,88C,119C 'editprotectionupdat':104C 'enabl':103C 'hold':57B 'host':22B 'improp':82C 'indefinit':44B,106C 'let':32B 'lock':6A,68B,117C 'mediawiki':2A,17B,25B,27B,75C 'miss':64B 'move':47B,109C 'ordinari':3A,34B,87C 'packag':18B 'page':7A,51B,62B,92C 'perman':8A,90C 'php':19B 'protect':40B,61B,91C,98C 'restrict':48B,110C 'right':59B,116C 'self':21B 'self-host':20B 'semant':1A,24B,26B,74C 'semantic-mediawiki':23B 'set':43B 'smwgeditprotectionright':101C 'via':9A 'vulner':84C 'without':111C","nicknames":[],"mitigations":[],"who_affected":"Wikis running Semantic MediaWiki between 2.5.0 and 7.3.1 are exposed, and the flaw only matters when `$smwgEditProtectionRight` is enabled. Wikis that do not enable that setting, or that already run 7.3.1 or later, can skip it. Wikis where untrusted or broadly granted editors can change pages are the ones most at risk.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T11:17:29+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/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","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-116876","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116876","severity":null,"published_at":"2026-10-27T11:17:29+00:00","modified_at":"2026-10-27T11:17:29+00:00","first_seen_at":"2026-10-27T11:31:27+00:00","fetched_at":"2026-10-27T11:31:27+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}