CVE-2026-73397

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-18. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

Unauthenticated Deserialization of untrusted data in Youzify <= 1.3.7 versions.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 20, 2026

Advisory Details (1)

Auto-updated Aug 20, 2026
Patch available.
generic Patch Available

Deserialization of untrusted data in WordPress Youzify Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/youzify/vulnerability/wordpress-youzify-plugin-1-3-7-deserialization-of-untrusted-data-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-73397(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 25× in last 7d / 25× 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. 2026-08-21 03:56 UTCGHSA enrichment
  2. 2026-08-21 00:13 UTCEG score recompute
  3. 2026-08-21 00:13 UTCGHSA enrichment
  4. 2026-08-20 22:56 UTCEPSS rescore
  5. 2026-08-20 20:30 UTCGHSA enrichment
  6. 2026-08-20 16:47 UTCGHSA enrichment
  7. 2026-08-20 12:52 UTCGHSA enrichment
  8. 2026-08-20 09:09 UTCGHSA enrichment
  9. 2026-08-20 05:26 UTCGHSA enrichment
  10. 2026-08-20 01:42 UTCGHSA enrichment
  11. 2026-08-19 21:59 UTCGHSA enrichment
  12. 2026-08-19 18:15 UTCEG score recompute
  13. 2026-08-19 18:15 UTCGHSA enrichment
  14. 2026-08-19 17:04 UTCEPSS rescore
  15. 2026-08-19 13:46 UTCGHSA enrichment
  16. 2026-08-19 10:03 UTCGHSA enrichment
  17. 2026-08-19 06:19 UTCGHSA enrichment
  18. 2026-08-19 02:34 UTCGHSA enrichment
  19. 2026-08-18 22:46 UTCGHSA enrichment
  20. 2026-08-18 19:03 UTCEG score recompute
  21. 2026-08-18 19:03 UTCGHSA enrichment
  22. 2026-08-18 15:19 UTCEG score recompute
  23. 2026-08-18 14:50 UTCEG score recompute
  24. 2026-08-18 14:23 UTCEG score recompute
  25. 2026-08-18 14:20 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-73397?
CVE-2026-73397 is a critical vulnerability published on August 18, 2026. Unauthenticated Deserialization of untrusted data in Youzify <= 1.3.7 versions.
When was CVE-2026-73397 disclosed?
CVE-2026-73397 was first published in the National Vulnerability Database on August 18, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73397 actively exploited?
CVE-2026-73397 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 68.0% of all scored CVEs.
What is the CVSS score of CVE-2026-73397?
CVE-2026-73397 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-73397?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73397, 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-2026-73397

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