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{"bugzilla": {"description": "bandit: Bandit: HTTP Request Smuggling via Duplicate Content-Length Headers", "id": "2464590", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464590"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-444", "details": ["A flaw was found in Bandit, an HTTP server. This vulnerability allows for HTTP request smuggling due to the server's inconsistent handling of duplicate Content-Length headers in HTTP requests. An unauthenticated attacker can exploit this by sending a specially crafted request. If Bandit is operating behind a proxy that interprets these headers differently, the attacker can bypass security mechanisms like Web Application Firewalls (WAFs), access controls, and rate limiting, potentially leading to unauthorized actions or access."], "name": "CVE-2026-39805", "public_date": "2026-05-01T20:34:29Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-39805\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-39805\nhttps://cna.erlef.org/cves/CVE-2026-39805.html\nhttps://github.com/mtrudel/bandit/commit/f2ca636eb6df385219957e8934e9fc6efa1630d1\nhttps://github.com/mtrudel/bandit/security/advisories/GHSA-c67r-gc9j-2qf7\nhttps://osv.dev/vulnerability/EEF-CVE-2026-39805"], "statement": "This IMPORTANT HTTP request smuggling vulnerability in Bandit allows attackers to bypass security controls when the server sits behind certain proxies. Exploitation requires high complexity (specific proxy behavior) but no authentication. Impact is high to confidentiality and integrity through bypassed security mechanisms. Affects Bandit versions before 1.11.0.", "threat_severity": "Important"}

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