CVE-2026-54237

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.8%, top 47% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.3Exploit: None knownExposed: 0

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

Wavelog is web-based amateur radio logging software. From 1.8 until 2.4.2, Wavelog exposes /install/ajax.php and /install/includes/interface_assets/triggers.php after installation without an installation lock or permission check. Unsanitized input reaches write_config() and write_configfile() in install/includes/core/core_class.php, allowing a remote unauthenticated attacker to read or write log files and place attacker-controlled content into PHP configuration files. The resulting PHP configuration content can execute on the server. This issue is fixed in version 2.4.2.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
57(Track)
EG Risk 57/100SSVC: 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
Severity93% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
53%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 24, 2026

Advisory Details (4)

Auto-updated Sep 23, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available

Unauthenticated Remote Code Execution · Advisory · wavelog/wavelog · GitHub

https://github.com/wavelog/wavelog/security/advisories/GHSA-jxjv-chgm-rh36
github_release Patch Available

Release 2.4.2

Patch available: wavelog/wavelog 2.4.2

https://github.com/wavelog/wavelog/releases/tag/2.4.2
github_pr Patch Available

Release 2.4.2

Patch available: wavelog/wavelog 2.4.2 (PR #3228 merged 2026-05-09)

https://github.com/wavelog/wavelog/pull/3228
github_commit Patch Available

commit 9661efa86eff (wavelog/wavelog)

Patch available: wavelog/wavelog 2.4.2 (contains commit 9661efa86eff)

https://github.com/wavelog/wavelog/commit/9661efa86eff4598bd1a7ad8ca4ec60e76b6fb25

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 16× 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. 2026-09-24 16:15 UTCEG score recompute
  2. 2026-09-24 14:04 UTCEPSS rescore
  3. 2026-09-23 19:32 UTCEG score recompute
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-22 18:43 UTCEG score recompute
  6. 2026-09-21 22:01 UTCEG score recompute
  7. 2026-09-20 21:06 UTCEG score recompute
  8. 2026-09-20 20:16 UTCEPSS rescore
  9. 2026-09-19 16:08 UTCEG score recompute
  10. 2026-09-18 23:36 UTCEG score recompute
  11. 2026-09-18 19:28 UTCEG score recompute
  12. 2026-09-18 19:28 UTCEPSS rescore
  13. 2026-09-18 18:44 UTCEG score recompute
  14. 2026-09-17 21:20 UTCEG score recompute
  15. 2026-09-17 20:25 UTCEG score recompute
  16. 2026-09-17 20:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54237?
CVE-2026-54237 is a critical vulnerability published on September 17, 2026. Wavelog is web-based amateur radio logging software. From 1.8 until 2.4.2, Wavelog exposes /install/ajax.php and /install/includes/interfaceassets/triggers.php after installation without an installation lock or permission check. Unsanitized input reaches writeconfig() and writeconfigfile() in…
When was CVE-2026-54237 disclosed?
CVE-2026-54237 was first published in the National Vulnerability Database on September 17, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54237 actively exploited?
CVE-2026-54237 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 46.6% of all scored CVEs.
What is the CVSS score of CVE-2026-54237?
CVE-2026-54237 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-54237?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54237, 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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