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    CVE-2026-116878

    Semantic MediaWiki from 2.5.0 before 7.3.1 contains an uncontrolled resource consumption vulnerability that allows anonymous attackers to force quadratic computation by supplying a zero limit to Special:PropertyLabelSimilarity. Attackers can send repeated requests with limit=0 to bypass the SQL LIMIT and trigger pairwise similar_text() comparisons, exhausting PHP CPU, memory, and database connections.

    Published:Oct 27, 2026
    Last Modified:Oct 27, 2026
    EPS:Oct 27, 2026
    EPSS Score:
    CVSS Score:7.5

    Affected Products

    Vendor
    Semantic-mediawiki
    Product
    Semantic Mediawiki

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-116889 (CVSS 5.3) — SemanticMediaWiki from 2.5.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows use…
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    CVE-2026-116887 (CVSS 5.3) — Semantic MediaWiki from 3.0.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows us…
    CVE-2026-116886 (CVSS 5.3) — Semantic MediaWiki from 2.5.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows us…
    CVE-2026-116885 (CVSS 5.3) — Semantic MediaWiki from 3.1.0 before 7.3.1 contains a reflected cross-site scripting vulnerability in the Spec…
    CVE-2026-116884 (CVSS 5.3) — SemanticMediaWiki from 5.0.0 before 7.3.1 contains a stored cross-site scripting vulnerability in ext.smw.tool…
    CVE-2026-116883 (CVSS 4.8) — Semantic MediaWiki from 3.1.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows au…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High