{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/70938?format=json","vulnerability_id":"VCID-bus5-3zxs-4qfc","summary":"Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 1.0.0 to before version 4.14.4, a heap-based out-of-bounds WRITE occurs in GetAlertData, resulting in writing a NULL byte exactly 1 byte before the start of the buffer allocated by strdup. Due to unsigned integer underflow and pointer arithmetic wrapping, the write lands at offset -1 from the buffer, corrupting heap metadata. A malicious actor can potentially leverage this issue through a compromised agent to cause denial of service or heap corruption by injecting a specially crafted alert into the alerts log file monitored by wazuh-logcollector. This issue has been patched in version 4.14.4.","aliases":[{"alias":"CVE-2026-26204"}],"fixed_packages":[],"affected_packages":[],"references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-26204","reference_id":"","reference_type":"","scores":[{"value":"0.00019","scoring_system":"epss","scoring_elements":"0.05334","published_at":"2026-06-14T12:55:00Z"},{"value":"0.00019","scoring_system":"epss","scoring_elements":"0.05332","published_at":"2026-06-11T12:55:00Z"},{"value":"0.00019","scoring_system":"epss","scoring_elements":"0.0535","published_at":"2026-06-12T12:55:00Z"},{"value":"0.00019","scoring_system":"epss","scoring_elements":"0.05344","published_at":"2026-06-13T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-26204"},{"reference_url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-j4c7-hwjw-8857","reference_id":"GHSA-j4c7-hwjw-8857","reference_type":"","scores":[{"value":"4.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-04-30T12:48:02Z/"}],"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-j4c7-hwjw-8857"},{"reference_url":"https://github.com/wazuh/wazuh/releases/tag/v4.14.4","reference_id":"v4.14.4","reference_type":"","scores":[{"value":"4.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-04-30T12:48:02Z/"}],"url":"https://github.com/wazuh/wazuh/releases/tag/v4.14.4"}],"weaknesses":[{"cwe_id":124,"name":"Buffer Underwrite ('Buffer Underflow')","description":"The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer."},{"cwe_id":191,"name":"Integer Underflow (Wrap or Wraparound)","description":"The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result."}],"exploits":[],"severity_range_score":"4.4 - 4.4","exploitability":null,"weighted_severity":null,"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-bus5-3zxs-4qfc"}