CVE-2026-74046

MEDIUMPre-NVD 4.94.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 76% 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
Elevated
4.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.9Exploit: Elevated riskExposed: 0

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

Wazuh 4.4.0 before 4.14.7 contains a denial of service vulnerability in the fdecompress_files() function within cluster.py that allows authenticated cluster peers to exhaust memory by supplying a malicious synchronization archive without decompressed size limits. Attackers holding a valid cluster Fernet key can upload a small, highly compressed zip bomb archive that forces wazuh-clusterd on the master node to decompress the full payload into memory, causing memory exhaustion and service disruption.

CVSS v3
4.9
EG Score
4.9(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity49% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 18, 2026

Advisory Details (3)

Auto-updated Aug 18, 2026
🔬 Proof of concept available. Patch available. Sources: github_pr, github.
generic

Wazuh 4.4.0 < 4.14.7 DoS via fdecompress_files() Zip Bomb | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wazuh-dos-via-fdecompress-files-zip-bomb
github_pr Patch Available

Bound decompressed size when processing sync archives

Patch available: wazuh/wazuh v5.0.0-beta3 (PR #37119 merged 2026-06-25)

https://github.com/wazuh/wazuh/pull/37119
github Patch Available🟡 PoC Available

zlib decompression bomb in cluster archive processing lets authenticated peer exhaust wazuh-clusterd memory · Advisory · wazuh/wazuh · GitHub

https://github.com/wazuh/wazuh/security/advisories/GHSA-mr7j-w2m4-vw5j

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 17× 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. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-25 09:26 UTCEG score recompute
  3. 2026-08-24 14:18 UTCEPSS rescore
  4. 2026-08-24 11:00 UTCEG score recompute
  5. 2026-08-23 12:34 UTCEG score recompute
  6. 2026-08-23 00:19 UTCEPSS rescore
  7. 2026-08-22 14:08 UTCEG score recompute
  8. 2026-08-21 23:49 UTCEPSS rescore
  9. 2026-08-21 15:41 UTCEG score recompute
  10. 2026-08-20 22:56 UTCEPSS rescore
  11. 2026-08-19 18:49 UTCEG score recompute
  12. 2026-08-19 17:04 UTCEPSS rescore
  13. 2026-08-18 20:22 UTCEG score recompute
  14. 2026-08-18 19:29 UTCEG score recompute
  15. 2026-08-18 18:23 UTCEG score recompute
  16. 2026-08-18 17:40 UTCEG score recompute
  17. 2026-08-18 17:39 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74046?
CVE-2026-74046 is a medium vulnerability published on August 18, 2026. Wazuh 4.4.0 before 4.14.7 contains a denial of service vulnerability in the fdecompress_files() function within cluster.py that allows authenticated cluster peers to exhaust memory by supplying a malicious synchronization archive without decompressed size limits. Attackers holding a valid cluster…
When was CVE-2026-74046 disclosed?
CVE-2026-74046 was first published in the National Vulnerability Database on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74046 actively exploited?
CVE-2026-74046 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 76.2% of all scored CVEs.
What is the CVSS score of CVE-2026-74046?
CVE-2026-74046 has a CVSS v3 base score of 4.9 (NVD).
How do I remediate CVE-2026-74046?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74046, 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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