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Bidda Sovereign Intelligence · 10,085 Verified Nodes · 39 Sovereign Pillars

MITRE CAPEC-209: XSS Using MIME Type Mismatch (Detailed Attack Pattern - Medium Severity)

MITRE CAPEC-209 (XSS Using MIME Type Mismatch) is a detailed-level attack pattern in the MITRE Common Attack Pattern Enumeration and Classification. An…

What MITRE CAPEC-209: XSS Using MIME Type Mismatch (Detailed Attack Pattern - Medium Severity) requires

MITRE CAPEC-209 (XSS Using MIME Type Mismatch) is a detailed-level attack pattern in the MITRE Common Attack Pattern Enumeration and Classification. An adversary creates a file with scripting content but where the specified MIME type of the file is such that scripting is not expected. The adversary tricks the victim into accessing a URL that responds with the script file. Some browsers will detect that the specified MIME type of the file does not match the actual type of its content and will automatically switch to using an interpreter for the real content type. Likelihood of attack: Unknown. Typical severity: Medium. Maps to weaknesses CWE-79, CWE-20, CWE-646.

Pillar: Cybersecurity · Authority: MITRE Corporation · Version: 1.0.0 · Last updated: 2026-05-25

Primary source: https://capec.mitre.org/data/definitions/209.html

SHA-256 integrity: dd28ed7bd5be728fbd7b320eb2586d6a64fca629a2fe5ceab13f04be9c462d15

Primary Citations — 10 traced to source

MITRE CAPEC-209: XSS Using MIME Type Mismatch (https://capec.mitre.org/data/definitions/209.html)
CWE-79: underlying weakness (http://cwe.mitre.org/data/definitions/79.html)

+ 8 more citations (full bibliography, deterministic workflow, actionable schema and crosswalks) included in the vault unlock — $0.01 via Skyfire / L402 / Direct Base USDC.

Access

Discovery (free): /api/v1/nodes/mitre-capec-capec-209-xss-using-mime-type-mismatch.json — 6-field metadata
Vault (full node): /api/v1/vault/nodes/mitre-capec-capec-209-xss-using-mime-type-mismatch.json — full 13-key payload, $0.01 USDC (L402/Skyfire/Direct Base)
Canonical URL: https://bidda.com/intelligence/mitre-capec-capec-209-xss-using-mime-type-mismatch
Back to registry: Browse all 10,085 compliance nodes

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