CVE-2026-116876

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.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/d2a198f42184373bb8604450c46a13a2c28eafa3
https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-9824-67pm-c29j
https://www.vulncheck.com/advisories/semantic-mediawiki-2.5.0-before-7.3.1-missing-authorization-via-is-edit-protected
https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-9824-67pm-c29j

Configurations

No configuration.

History

31 Oct 2026, 03:17

Type	Values Removed	Values Added
References	~~() https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-9824-67pm-c29j -~~	() https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-9824-67pm-c29j -

27 Oct 2026, 11:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-27 11:17

Updated : 2026-10-31 03:17

NVD link : CVE-2026-116876

Mitre link : CVE-2026-116876

CVE.ORG link : CVE-2026-116876

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

{"id": "CVE-2026-116876", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-116876", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-31T02:33:12.665016Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 7.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"vendor": "SemanticMediaWiki", "product": "SemanticMediaWiki", "versions": [{"status": "affected", "version": "2.5.0", "lessThan": "7.3.1", "versionType": "semver"}, {"status": "unaffected", "version": "7.3.1", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-10-27T11:17:29.543", "references": [{"url": "https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/d2a198f42184373bb8604450c46a13a2c28eafa3", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-9824-67pm-c29j", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/semantic-mediawiki-2.5.0-before-7.3.1-missing-authorization-via-is-edit-protected", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-9824-67pm-c29j", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Undergoing Analysis", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-862"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-10-31T03:17:24.593", "sourceIdentifier": "disclosure@vulncheck.com"}