CVE-2026-58519

MEDIUMNVD 5.46.9▲
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 82% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 4 sources updated this week
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.4Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - Cargo Extension allows Stored XSS.

This issue affects Mediawiki - Cargo Extension: from * before 3.9.1.

CVSS v3
5.4
EG Score
6.9(medium)
EPSS
18.4%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 6, 2026

Advisory Details (2)

Auto-updated Jul 1, 2026
No patch confirmed yet.
generic

⚓ T424140 CVE-2026-58519: Stored XSS through Cargo's map format

https://phabricator.wikimedia.org/T424140
generic
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1277612

Vendor Advisories for CVE-2026-58519(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 22× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 21:35 UTCNVD updateCVSS v3 → 5.4
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 13:31 UTCEG score recompute
  5. 2026-07-06 13:31 UTCGHSA enrichment
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-05 11:51 UTCEG score recompute
  9. 2026-07-05 11:51 UTCGHSA enrichment
  10. 2026-07-05 02:31 UTCEPSS rescore
  11. 2026-07-05 02:30 UTCEPSS rescore
  12. 2026-07-04 10:13 UTCEG score recompute
  13. 2026-07-04 10:13 UTCGHSA enrichment
  14. 2026-07-04 06:31 UTCEPSS rescore
  15. 2026-07-04 06:31 UTCEPSS rescore
  16. 2026-07-03 08:36 UTCEG score recompute
  17. 2026-07-03 08:36 UTCGHSA enrichment
  18. 2026-07-02 06:59 UTCEG score recompute
  19. 2026-07-02 06:59 UTCGHSA enrichment
  20. 2026-07-01 15:07 UTCEPSS rescore
  21. 2026-07-01 05:21 UTCEG score recompute
  22. 2026-07-01 05:20 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-58519?
CVE-2026-58519 is a medium vulnerability published on July 1, 2026. Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - Cargo Extension allows Stored XSS. This issue affects Mediawiki - Cargo Extension: from * before 3.9.1.
When was CVE-2026-58519 disclosed?
CVE-2026-58519 was first published in the National Vulnerability Database on July 1, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58519 actively exploited?
CVE-2026-58519 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-58519?
CVE-2026-58519 has a CVSS v3 base score of 5.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.9.
How do I remediate CVE-2026-58519?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58519, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-58519

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