CVE-2026-39573

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-17. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: NoneExposed: 0

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

Unauthenticated PHP Object Injection in Mildhill <= 1.5 versions.

CVSS v3
8.1
EG Score
8.1(high)
EPSS
31.5%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 17, 2026

References (1)

Vendor Advisories for CVE-2026-39573(1)

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

Frequently asked(5)

What is CVE-2026-39573?
CVE-2026-39573 is a high vulnerability published on June 17, 2026. Unauthenticated PHP Object Injection in Mildhill <= 1.5 versions.
When was CVE-2026-39573 disclosed?
CVE-2026-39573 was first published in the National Vulnerability Database on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39573 actively exploited?
CVE-2026-39573 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 31.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-39573?
CVE-2026-39573 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-39573?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39573, 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.

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