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Home/CWEs/CWE-409
Common Weakness Enumeration

CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)

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The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output.

Abstraction
Base
Related CVEs
25

▪ References & documentation

MITRE CWE definitionNVD CWE listing

▪ Related CVEs

CVE-2026-1526High

Security vulnerability in undici

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Security vulnerability in undici

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Security vulnerability in undici

CVE-2026-21441High

Security vulnerability in urllib3

CVE-2026-21441High

Security vulnerability in urllib3

CVE-2025-66471High

Security vulnerability in urllib3

CVE-2025-66471High

Security vulnerability in urllib3

CVE-2026-21441High

Security vulnerability in urllib3

CVE-2025-66471High

Security vulnerability in urllib3

CVE-2025-66471High

Security vulnerability in urllib3

CVE-2026-21441High

Security vulnerability in urllib3

CVE-2026-1526High

Security vulnerability in undici

CVE-2026-1526High

Security vulnerability in undici

CVE-2026-1526High

Security vulnerability in undici

CVE-2026-1526High

Security vulnerability in undici

CVE-2026-1526High

Security vulnerability in undici

CVE-2026-44432High

Security vulnerability in urllib3

CVE-2026-21441High

Security vulnerability in urllib3

CVE-2025-66471High

Security vulnerability in urllib3

CVE-2025-69223High

Security vulnerability in aiohttp

CVE-2026-54278High

Security vulnerability in aiohttp

GHSA-mf9v-mfxr-j63jHigh

Security vulnerability in urllib3

GHSA-38jv-5279-wg99High

Security vulnerability in urllib3

CVE-2026-1526High

Security vulnerability in undici

CVE-2026-32630Medium

Security vulnerability in file-type