CVE-2026-58298

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-07-03. NVD baseline CVSS 8.2; sources differ by 1.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 6 sources updated this week
7.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.2Exploit: 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') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

CVSS v3
7.2
EG Score
7.2(high)
EPSS
19.6%
KEV
Not listed

Published

July 3, 2026

Last Modified

July 7, 2026

Advisory Details (1)

Auto-updated Jul 6, 2026
Patch available. Sources: microsoft.
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58298

Vendor Advisories for CVE-2026-58298(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.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 29× in last 7d / 29× 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. 2026-07-07 03:31 UTCMITRE cvelistV5CVSS v3 → 7.2
  2. 2026-07-06 23:53 UTCEG score recompute
  3. 2026-07-06 23:53 UTCVendor advisory
  4. 2026-07-06 23:53 UTCGHSA enrichment
  5. 2026-07-06 21:35 UTCNVD updateCVSS v3 → 8.2
  6. 2026-07-06 16:27 UTCEPSS rescore
  7. 2026-07-06 16:27 UTCEPSS rescore
  8. 2026-07-06 11:38 UTCEG score recompute
  9. 2026-07-06 11:38 UTCVendor advisory
  10. 2026-07-06 11:38 UTCGHSA enrichment
  11. 2026-07-06 02:23 UTCEPSS rescore
  12. 2026-07-06 02:23 UTCEPSS rescore
  13. 2026-07-05 23:23 UTCEG score recompute
  14. 2026-07-05 23:23 UTCVendor advisory
  15. 2026-07-05 23:23 UTCGHSA enrichment
  16. 2026-07-05 11:10 UTCEG score recompute
  17. 2026-07-05 11:10 UTCVendor advisory
  18. 2026-07-05 11:10 UTCGHSA enrichment
  19. 2026-07-05 02:31 UTCEPSS rescore
  20. 2026-07-05 02:30 UTCEPSS rescore
  21. 2026-07-04 22:57 UTCEG score recompute
  22. 2026-07-04 22:57 UTCVendor advisory
  23. 2026-07-04 22:57 UTCGHSA enrichment
  24. 2026-07-04 10:44 UTCEG score recompute
  25. 2026-07-04 10:44 UTCVendor advisory
Show 4 more
  1. 2026-07-04 10:44 UTCGHSA enrichment
  2. 2026-07-03 22:27 UTCEG score recompute
  3. 2026-07-03 22:27 UTCVendor advisory
  4. 2026-07-03 22:27 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-58298?
CVE-2026-58298 is a high vulnerability published on July 3, 2026. Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
When was CVE-2026-58298 disclosed?
CVE-2026-58298 was first published in the National Vulnerability Database on July 3, 2026, with the most recent update on July 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58298 actively exploited?
CVE-2026-58298 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-58298?
CVE-2026-58298 has a CVSS v4.0 base score of 7.2 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-58298?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58298, 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-2026-58298

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