# CVE-2026-116873: Semantic MediaWiki 7.3.0 Missing Authorization via smwtask API run-joblist and update

Status: published. Published: 2026-10-27. Updated: 2026-11-02.

Semantic MediaWiki from 7.3.0 before 7.3.1 contains a missing authorization vulnerability in the smwtask API module that allows unauthenticated attackers to run queued jobs and force store updates. Attackers can use the public anonymous CSRF token with run-joblist to execute arbitrary job types in unbounded counts, or invoke update on sysop-protected pages, leaking page titles and exhausting resources.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- SemanticMediaWiki / SemanticMediaWiki: ≥ 7.3.0; < 7.3.1 (affected, semver); 7.3.1 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 7.3 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.19% as of 2026-11-02; percentile 8.75%

- SSVC: exploitation poc; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-862

## Exploit evidence

- exploit: https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-rjqv-6r83-pg8v (ADP: CISA-ADP)

## References

- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-rjqv-6r83-pg8v (CNA: VulnCheck; vendor-advisory)

- https://www.vulncheck.com/advisories/semantic-mediawiki-7.3.0-missing-authorization-via-smwtask-api-run-joblist-and-update (CNA: VulnCheck; third-party-advisory)

- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-rjqv-6r83-pg8v (ADP: CISA-ADP; exploit)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-116873; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-116873; retrieved 2026-11-02; source updated Not reported

Revision: b096f9f4807b7d7178269473ba950a92347c004116d2feaa21d77c97a30195cc

Canonical: https://y2.dev/cve/CVE-2026-116873

## Agent and API access

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- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.