CVE-2026-21441
HighAdvisory
Published 7 Jan 2026In the index since 5 Sept 2026
- Severity
- High
- worst across findings
- CVSS
- 8.9
- base score, highest
- EPSS
- 0.030
- 86th percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 836
- of 17,787 indexed, latest versions
- Container images
- 893
- deployed by those charts
- Fix available
- 5 of 5
- affected packages
Decompression-bomb safeguards bypassed when following HTTP redirects (streaming API)
Carried by container images the latest versions of 836 of 17,787 indexed charts deploy, on 893 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| py3-pipapk | 25.0.1-r0, 25.2-r0, 26.0.1-r1 | 26.1.1-r0 | 3 |
| urllib3pypi | 1.22, 1.23, 1.24, 1.24.1+47 more | 2.6.3 | 864 |
| python-pipdeb | 9.0.1-2.3~ubuntu1, 9.0.1-2.3~ubuntu1.18.04.1, 9.0.1-2.3~ubuntu1.18.04.2, 9.0.1-2.3~ubuntu1.18.04.4+14 more | 9.0.1-2.3~ubuntu1.18.04.8+esm8 | 60 |
| python-urllib3deb | 1.22-1ubuntu0.18.04.1, 1.22-1ubuntu0.18.04.2, 1.25.8-2ubuntu0.1, 1.25.8-2ubuntu0.2+8 more | 1.25.8-2ubuntu0.4+esm3, 1.26.5-1~exp1+deb11u3, 1.26.5-1~exp1ubuntu0.5, 1.26.12-1+deb12u3+1 more | 52 |
| py3-urllib3apk | 1.26.18-r1, 1.26.20-r0 | 1.26.18-r2, 1.26.20-r1 | 4 |
- OSV records
- ALPINE-CVE-2026-21441CGA-295m-5rcj-2qm6CGA-7cp6-w84v-cpfxDEBIAN-CVE-2026-21441GHSA-38jv-5279-wg99UBUNTU-CVE-2026-21441DLA-4446-1
- Also known as
- CGA-hqjr-j69p-ch46, CGA-rh7x-c7j6-9qqm, DSA-6102-2, PYSEC-2026-1996, USN-7955-1, USN-7955-2, USN-8010-1
Charts affected
836 by stars
Container images carrying it
893 by charts deploying them
A fixed version is listed for 5 of the 5 affected packages.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| sealife/ | f5cc2f0f4c9b | urllib3 | 2.6.3 | 2 |
| taigaio/ | 4beed8f62c9f | urllib3 | 2.6.3 | 2 |
| tzahi12345/ | 2f943d584711 | python-pip | no fix listed | 2 |
| weblate/ | 69c160d37a3c | urllib3 | 2.6.3 | 2 |
| ghcr.io/ | b1ba7b054af2 | python-pip | no fix listed | 2 |
| ghcr.io/ | 7962759d99d7 | urllib3 | 2.6.3 | 2 |
| ghcr.io/ | 42002d66ddb3 | urllib3 | 2.6.3 | 2 |
| ghcr.io/ | 33e60bfb40f2 | urllib3 | 2.6.3 | 2 |
| ghcr.io/ | fd8d3e6e4cdf | urllib3 | 2.6.3 | 2 |
| ghcr.io/ | 95ee018cf558 | urllib3 | 2.6.3 | 2 |
| public.ecr.aws/ | 26ac7263a823 | urllib3 | 2.6.3 | 2 |
| quay.io/ | 0b62db8afc9b | urllib3 | 2.6.3 | 2 |
| quay.io/ | f7f8228f17cc | urllib3 | 2.6.3 | 2 |
| quay.io/ | 6a8671702d6f | urllib3 | 2.6.3 | 2 |
| quay.io/ | 716b0b33ff2d | urllib3 | 2.6.3 | 2 |
| quay.io/ | b8d5067137fe | urllib3 | 2.6.3 | 2 |
| quay.io/ | f6ed71d0f9f1 | urllib3 | 2.6.3 | 2 |
| quay.io/ | 464a3af4dfe0 | urllib3 | 2.6.3 | 2 |
| quay.io/ | bb5e052770e5 | urllib3 | 2.6.3 | 2 |
| a10networks/ | 8dc58d434d71 | python-pip urllib3 | 9.0.1-2.3~ubuntu1.18.04.8+esm8 2.6.3 | 1 |
| abdullahkhawer/ | 28a6c3f7e0a9 | urllib3 | 2.6.3 | 1 |
| acockburn/ | 3a93281d7e94 | urllib3 | 2.6.3 | 1 |
| adeptiainc/ | 283001e83739 | urllib3 | 2.6.3 | 1 |
| adwerx/ | 840d2b078682 | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |
| afrank/ | d463c37b08d7 | urllib3 | 2.6.3 | 1 |
| airbyte/ | 3b3a670af168 | urllib3 | 2.6.3 | 1 |
| airsonicadvanced/ | f7cbafac2806 | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |
| akeyless/ | 4ba8900a0061 | urllib3 | 2.6.3 | 1 |
| alakaganaguathoork/ | 7eb27b0f4a5a | urllib3 | 2.6.3 | 1 |
| alerta/ | 4786b9eaa606 | urllib3 | 2.6.3 | 1 |
| alexvm6/ | fb99ee4f760a | urllib3 | 2.6.3 | 1 |
| allegroai/ | 713ae38f7daf | urllib3 | 2.6.3 | 1 |
| allegroai/ | 772827a01bb5 | python-pip urllib3 | 9.0.1-2.3~ubuntu1.18.04.8+esm8 2.6.3 | 1 |
| allegroai/ | fca885e8cfc6 | urllib3 | 2.6.3 | 1 |
| allegroai/ | c58d9da7bdf8 | urllib3 | 2.6.3 | 1 |
| alpine/ | 00ac10bcb759 | urllib3 | 2.6.3 | 1 |
| alpine/ | 21b24e6bf801 | urllib3 | 2.6.3 | 1 |
| alpine/ | 6dbe6f391eda | urllib3 | 2.6.3 | 1 |
| alpine/ | 7a319b15cfc9 | urllib3 | 2.6.3 | 1 |
| alpine/ | 7e1e7d5b7a96 | urllib3 | 2.6.3 | 1 |
| alpine/ | 9c4976d47656 | urllib3 | 2.6.3 | 1 |
| alpine/ | a41efe02a041 | urllib3 | 2.6.3 | 1 |
| alpine/ | bd01dae02676 | urllib3 | 2.6.3 | 1 |
| alpine/ | cd560fce90f7 | urllib3 | 2.6.3 | 1 |
| alpine/ | e5c0b053fed7 | urllib3 | 2.6.3 | 1 |
| alpine/ | eec354133193 | urllib3 | 2.6.3 | 1 |
| alpine/ | fc059f056ad0 | urllib3 | 2.6.3 | 1 |
| amancevice/ | c8c04bfe3d66 | urllib3 | 2.6.3 | 1 |
| amundsendev/ | 69e7915e61c1 | urllib3 | 2.6.3 | 1 |
| amundsendev/ | 4d98eb21f5f9 | urllib3 | 2.6.3 | 1 |