CVE-2026-16297

MEDIUMPre-NVD 4.14.1—
EchelonGraph scoreHIGH confidence

Score 4.1 from GitHub Security Advisory published 2026-08-03. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
4.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.1Exploit: None knownExposed: 0

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

The Clearfy Cache WordPress plugin before 2.4.3 does not restrict the classes allowed when unserializing settings-import data, allowing users with administrator access to perform PHP Object Injection attacks, which may lead to remote code execution when a suitable gadget chain is present in the environment.

CVSS v3
4.1
EG Score
4.1(high)
EG Risk
23(Track)
EG Risk 23/100SSVC: 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
Severity41% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

August 3, 2026

Last Modified

August 3, 2026

Advisory Details (1)

Auto-updated Aug 3, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Clearfy < 2.4.3 – Admin+ PHP Object Injection via Settings Import | CVE 2026-16297 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/3daf62cd-eefe-49ec-89f7-b13f88111853/

Vendor Advisories for CVE-2026-16297(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 20× in last 7d / 54× 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 02:42 UTCEG score recompute
  2. 2026-08-21 02:42 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 02:09 UTCEG score recompute
  5. 2026-08-20 02:09 UTCGHSA enrichment
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-19 01:37 UTCEG score recompute
  8. 2026-08-19 01:37 UTCGHSA enrichment
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-18 01:05 UTCEG score recompute
  11. 2026-08-18 01:05 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-17 00:33 UTCEG score recompute
  14. 2026-08-17 00:33 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 02:14 UTCEPSS rescore
  17. 2026-08-16 00:01 UTCEG score recompute
  18. 2026-08-16 00:01 UTCGHSA enrichment
  19. 2026-08-15 01:30 UTCEPSS rescore
  20. 2026-08-14 23:28 UTCGHSA enrichment
  21. 2026-08-13 22:56 UTCEG score recompute
  22. 2026-08-13 22:56 UTCGHSA enrichment
  23. 2026-08-13 22:00 UTCEPSS rescore
  24. 2026-08-12 22:25 UTCEG score recompute
  25. 2026-08-12 22:25 UTCGHSA enrichment
Show 29 more
  1. 2026-08-12 13:50 UTCEPSS rescore
  2. 2026-08-11 21:53 UTCEG score recompute
  3. 2026-08-11 21:53 UTCGHSA enrichment
  4. 2026-08-11 13:42 UTCEPSS rescore
  5. 2026-08-11 00:00 UTCEPSS rescore
  6. 2026-08-10 21:21 UTCGHSA enrichment
  7. 2026-08-09 20:49 UTCEG score recompute
  8. 2026-08-09 20:49 UTCGHSA enrichment
  9. 2026-08-09 13:46 UTCEPSS rescore
  10. 2026-08-08 20:18 UTCEG score recompute
  11. 2026-08-08 20:18 UTCGHSA enrichment
  12. 2026-08-08 16:37 UTCEPSS rescore
  13. 2026-08-07 19:46 UTCEG score recompute
  14. 2026-08-07 19:46 UTCGHSA enrichment
  15. 2026-08-06 19:14 UTCEG score recompute
  16. 2026-08-06 19:14 UTCGHSA enrichment
  17. 2026-08-06 13:46 UTCEPSS rescore
  18. 2026-08-05 19:17 UTCEPSS rescore
  19. 2026-08-05 18:42 UTCGHSA enrichment
  20. 2026-08-04 18:10 UTCEG score recompute
  21. 2026-08-04 18:10 UTCGHSA enrichment
  22. 2026-08-04 15:10 UTCEPSS rescore
  23. 2026-08-04 10:38 UTCEPSS rescore
  24. 2026-08-03 17:38 UTCEG score recompute▲ 4.10
  25. 2026-08-03 17:38 UTCGHSA enrichment
  26. 2026-08-03 17:36 UTCNVD updateCVSS v3 → 4.1 · severity → MEDIUM
  27. 2026-08-03 07:22 UTCNVD update
  28. 2026-08-03 06:34 UTCEG score recompute
  29. 2026-08-03 06:33 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-16297?
CVE-2026-16297 is a medium vulnerability published on August 3, 2026. The Clearfy Cache WordPress plugin before 2.4.3 does not restrict the classes allowed when unserializing settings-import data, allowing users with administrator access to perform PHP Object Injection attacks, which may lead to remote code execution when a suitable gadget chain is present in the…
When was CVE-2026-16297 disclosed?
CVE-2026-16297 was first published in the National Vulnerability Database on August 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16297 actively exploited?
CVE-2026-16297 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 85.9% of all scored CVEs.
What is the CVSS score of CVE-2026-16297?
CVE-2026-16297 has a CVSS v3.1 base score of 4.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-16297?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16297, 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

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