{"id":"AZL-74967","summary":"CVE-2025-55131 affecting package nodejs18 for versions less than 18.20.3-11","details":"A flaw in Node.js's buffer allocation logic can expose uninitialized memory when allocations are interrupted, when using the `vm` module with the timeout option. Under specific timing conditions, buffers allocated with `Buffer.alloc` and other `TypedArray` instances like `Uint8Array` may contain leftover data from previous operations, allowing in-process secrets like tokens or passwords to leak or causing data corruption. While exploitation typically requires precise timing or in-process code execution, it can become remotely exploitable when untrusted input influences workload and timeouts, leading to potential confidentiality and integrity impact.","modified":"2026-04-21T04:38:49.949451Z","published":"2026-01-20T21:16:03Z","upstream":["CVE-2025-55131"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55131"}],"affected":[{"package":{"name":"nodejs18","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/nodejs18"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"18.20.3-11"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-74967.json"}}],"schema_version":"1.7.5"}