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{"bugzilla": {"description": "nodejs: Node.js: Denial of Service vulnerability", "id": "2510857", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2510857"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-617", "details": ["A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchronous `node:zlib` APIs, causing the entire process to crash. All 11 synchronous zlib functions are affected.\nRepeated exploitation of this condition can result in a denial of service.\nThis vulnerability affects Node.js **22.x**, **24.x**, and **26.x**.", "A flaw was found in Node.js. A malicious actor could exploit this vulnerability by providing a specially crafted input to the synchronous `node:zlib` APIs. This could cause the Node.js process to crash, leading to a denial of service and making the application unavailable to users."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-58045", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "nodejs22", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "nodejs24", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "nodejs:22/nodejs", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "nodejs:24/nodejs", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "nodejs:22/nodejs", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "nodejs:24/nodejs", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "nodejs22", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "nodejs24", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "nodejs26", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-08-04T00:49:58Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-58045\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-58045\nhttps://nodejs.org/en/blog/vulnerability/july-2026-security-releases"], "statement": "This flaw strictly impacts Availability with zero effect on Confidentiality or Integrity (C:N, I:N, A:H). Practical exploitation occurs when an application passes attacker-controlled typed array objects into synchronous `node:zlib` functions, triggering an internal assertion and crashing the Node.js process. Applications using asynchronous `node:zlib` routines or processing standard binary buffers are unaffected. Both Red Hat and CVEOrg scores align at 6.2 (Moderate) with a Local attack vector (AV:L), reflecting that an attacker must be able to inject malformed array structures directly into the application's synchronous data stream.", "threat_severity": "Moderate"}