CVE-2026-42390

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-06-25. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

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

An invalid zone might pass ZONEMD validation while it should not. This is only relevant if ZoneToCache is configured with ZONEMD validation.

CVSS v3
5.3
EG Score
5.3(high)
EPSS
11.6%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 25, 2026

References (1)

Vendor Advisories for CVE-2026-42390(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 / 36× 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 21:24 UTCEG score recompute
  2. 2026-07-06 21:24 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 20:53 UTCEG score recompute
  8. 2026-07-05 20:53 UTCGHSA enrichment
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-04 20:20 UTCEG score recompute
  11. 2026-07-04 20:20 UTCGHSA enrichment
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-03 19:50 UTCEG score recompute
  14. 2026-07-03 19:50 UTCGHSA enrichment
  15. 2026-07-02 19:21 UTCEG score recompute
  16. 2026-07-02 19:21 UTCGHSA enrichment
  17. 2026-07-01 18:50 UTCEG score recompute
  18. 2026-07-01 18:50 UTCGHSA enrichment
  19. 2026-07-01 15:06 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 18:20 UTCEG score recompute
  22. 2026-06-30 18:20 UTCGHSA enrichment
  23. 2026-06-29 17:50 UTCEG score recompute
  24. 2026-06-29 17:50 UTCGHSA enrichment
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 11 more
  1. 2026-06-28 17:20 UTCEG score recompute
  2. 2026-06-28 17:20 UTCGHSA enrichment
  3. 2026-06-28 14:07 UTCEPSS rescore
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-27 16:50 UTCEG score recompute
  6. 2026-06-27 16:50 UTCGHSA enrichment
  7. 2026-06-27 03:08 UTCEPSS rescore
  8. 2026-06-26 16:19 UTCEG score recompute
  9. 2026-06-26 16:19 UTCGHSA enrichment
  10. 2026-06-25 15:49 UTCEG score recompute
  11. 2026-06-25 15:49 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-42390?
CVE-2026-42390 is a medium vulnerability published on June 25, 2026. An invalid zone might pass ZONEMD validation while it should not. This is only relevant if ZoneToCache is configured with ZONEMD validation.
When was CVE-2026-42390 disclosed?
CVE-2026-42390 was first published in the National Vulnerability Database on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42390 actively exploited?
CVE-2026-42390 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42390?
CVE-2026-42390 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-42390?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42390, 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-2026-42390

Explore →

Is Your Infrastructure Affected by CVE-2026-42390?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs