CVE-2026-114348

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{"bugzilla": {"description": "webpack-dev-server: webpack-dev-server: Information disclosure via malformed Host header", "id": "2558806", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2558806"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "status": "draft"}, "cwe": "CWE-209", "details": ["A flaw was found in webpack-dev-server. An unauthenticated remote attacker can exploit improper Host header validation in the open-editor endpoint to obtain sensitive technical information. By sending a request with a specially crafted Host header, the attacker triggers an internal server error that returns a full error stack trace. This exposes environment details, including local file system paths, module locations, and internal source code references."], "name": "CVE-2026-114348", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "prometheus3.13", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-10-22T09:38:37Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-114348\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-114348\nhttps://cna.openjsf.org/security-advisories.html\nhttps://github.com/webpack/webpack-dev-server/security/advisories/GHSA-wqhc-fvfg-56q6"], "threat_severity": "Moderate"}

{"created": "2026-10-22T10:45:04.076453+00:00", "updated": "2026-10-22T10:45:04.076468+00:00", "vendors": []}