high
CVE-2026-21441
urllib3 decompression-bomb safeguards bypassed when following HTTP redirects (streaming API)
- Severity
- high
- Affected product
- urllib3
- Affected versions
- urllib3 ≥ 1.22, < 2.6.3
- Fixed in
- urllib3 2.6.3
- Detection basis
- Component version range
- Shipped rule
- urllib3: urllib3 decompression-bomb safeguards bypassed when following HTTP redirects (streaming API)
- Added to NewScan
- 2026-09-30
- Detected by
- NewScan — free, self-hosted
How NewScan reports it
COMPONENT VERSION RANGE
NewScan fingerprints urllib3 from its response and reports this CVE when the detected version falls inside the affected range below.
References
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