CVE-2026-74030CWE-776

CVE-2026-74030

Medium · published October 13, 2026

CVSS v3.1
4.9
EPSS
0%
Percentile
33.4
In the wild
Unconfirmed
What it is

Wazuh from 3.9.0 before 4.14.8 contains an uncontrolled YAML alias expansion vulnerability in yaml2json_node that allows a manager-controlled policy to exhaust agent memory. Attackers controlling the manager can push a small SCA policy with nested aliases via merged.mg to OOM-kill wazuh-modulesd on every agent in a group.

The record
Technical detail
CVSS v3.1
4.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00403 · 33.4th percentile
Weakness
CWE-776 · Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
Published
2026-10-13T18:17Z
References (3)
https://github.com/wazuh/wazuh/releases/tag/v4.14.8 · [email protected]https://github.com/wazuh/wazuh/security/advisories/GHSA-x8v7-g49q-ff7j · [email protected]https://www.vulncheck.com/advisories/wazuh-3.9.0-before-4.14.8-memory-exhaustion-via-sca-yaml-alias-expansion · [email protected]
EPSS history
Timeline
  • 15 OCT 03:34Z
    EPSS moved — → 0%
    epss
  • 13 OCT 13:27Z
    Wazuh 3.9.0 before 4.14.8 Memory Exhaustion via SCA YAML Alias Expansion
    cvelistv5
  • 13 OCT 13:27Z
    Wazuh 3.9.0 before 4.14.8 Memory Exhaustion via SCA YAML Alias Expansion
    cvelistv5