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CVE-2026-116890— Semantic MediaWiki 3.0.0 before 7.3.0 Missing Authorization via smwtask API

Quick assessment

Affected

SemanticMediaWiki SemanticMediaWiki

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Semantic MediaWiki 3.0.0 至 7.3.0（不含 7.3.0）版本在 api.php 的 smwtask 模块中存在授权缺失漏洞，允许未认证的攻击者执行仅限管理员运行的维护任务。攻击者可利用公开的匿名 CSRF 令牌读取内部存储统计信息、将 smw.entityIdDisposer 等任务加入队列，并执行已排队的任务，从而导致系统性能下降并篡改语义数据。

CVSS 7.3 · High Updated Oct 27, 2026

Possible ATT&CK Techniques 3 AI

T1070 · Indicator Removal T1068 · Exploitation for Privilege Escalation T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Semantic MediaWiki 3.0.0 before 7.3.0 Missing Authorization via smwtask API

Source: CVE Program / CVE List V5

Vulnerability Description

Semantic MediaWiki from 3.0.0 before 7.3.0 contains a missing authorization vulnerability in the api.php smwtask module that allows unauthenticated attackers to run admin-only maintenance tasks. Attackers can use the public anonymous CSRF token to read internal store statistics, enqueue jobs like smw.entityIdDisposer, and execute queued jobs, degrading performance and altering semantic data.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

授权机制缺失

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
SemanticMediaWiki	SemanticMediaWiki	3.0.0 ~ 7.3.0	-

II. Public POCs for CVE-2026-116890

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-116890

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Other References for CVE-2026-116890 (2)

https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-jr78-w6w5-m8f8 vendor-advisory
https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.0-missing-authorization-via-smwtask-api third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-116890

Same Patch Batch · SemanticMediaWiki · 2026-10-27 · 22 CVEs total

CVE-2026-116871	7.5 HIGH	Semantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:Ask
CVE-2026-116872	7.5 HIGH	Semantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact Filters
CVE-2026-116878	7.5 HIGH	Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via Special:PropertyLabelSimilar
CVE-2026-116873	7.3 HIGH	Semantic MediaWiki 7.3.0 Missing Authorization via smwtask API run-joblist and update
CVE-2026-116880	7.1 HIGH	Semantic MediaWiki 3.0.0 before 7.3.1 CSRF via Special:SMWAdmin Maintenance Actions
CVE-2026-116876	7.1 HIGH	Semantic MediaWiki 2.5.0 before 7.3.1 Missing Authorization via Is edit protected
CVE-2026-116877	6.5 MEDIUM	Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via #set_recurring_event
CVE-2026-116874	6.1 MEDIUM	SemanticMediaWiki 3.1.0 before 7.3.1 Reflected XSS via JsonResultPrinter Default Parameter
CVE-2026-116892	6.1 MEDIUM	SemanticMediaWiki 3.1.0 before 7.3.1 Reflected XSS via Special:Search smw Profile
CVE-2026-116884	6.1 MEDIUM	SemanticMediaWiki 5.0.0 before 7.3.1 Stored XSS via Tooltip Module data-* Attributes
CVE-2026-116881	6.1 MEDIUM	Semantic MediaWiki 3.0.0 before 7.3.1 XSS via Property-Value Autocomplete
CVE-2026-116885	6.1 MEDIUM	Semantic MediaWiki before 7.3.1 Reflected XSS via Special:SMWAdmin id Parameter
CVE-2026-116889	6.1 MEDIUM	SemanticMediaWiki 2.5.0 before 7.3.1 Stored XSS via Special:Browse Code Property
CVE-2026-116891	6.1 MEDIUM	SemanticMediaWiki 4.2.0 before 7.2.1 Reflected XSS via Special:FacetedSearch cstate
CVE-2026-116875	6.1 MEDIUM	SemanticMediaWiki 3.0.0 before 7.3.1 Reflected XSS via Special:Ask Separator Parameters
CVE-2026-116886	5.4 MEDIUM	Semantic MediaWiki before 7.3.1 Stored XSS via External Identifier in Special:Browse
CVE-2026-116879	5.4 MEDIUM	Semantic MediaWiki 7.3.0 before 7.3.1 Missing Authorization via smwtask Update Task
CVE-2026-116887	5.4 MEDIUM	Semantic MediaWiki 3.0.0 before 7.3.1 Stored XSS via Special:Browse Keyword Property
CVE-2026-116883	4.8 MEDIUM	Semantic MediaWiki 3.1.0 before 7.3.1 Stored XSS via Schema Descriptions
CVE-2026-116882	4.8 MEDIUM	Semantic MediaWiki 4.2.0 before 7.3.1 Stored XSS via FacetedSearch Exploration Labels

Showing top 20 of 22 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: SemanticMediaWiki

Same vendor: SemanticMediaWiki

Same weakness: CWE-862