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 |
|---|---|---|---|---|
| erenozcan17/ | c9b6f0dfbffc | urllib3 | 2.6.3 | 1 |
| erlangsolutions/ | 4680c990147a | urllib3 | 2.6.3 | 1 |
| errbotio/ | 00ee4e0953ab | urllib3 | 2.6.3 | 1 |
| esailors/ | 5608ae045fa7 | urllib3 | 2.6.3 | 1 |
| esphome/ | 3f51ec10e823 | urllib3 | 2.6.3 | 1 |
| esphome/ | 9ab8cc88b28c | urllib3 | 2.6.3 | 1 |
| esphome/ | b2c6322700ac | urllib3 | 2.6.3 | 1 |
| esphome/ | def8b6e4f517 | urllib3 | 2.6.3 | 1 |
| evgkrsk/ | 37f0e1f435c3 | urllib3 | 2.6.3 | 1 |
| evk02/ | ef6ff257ef35 | urllib3 | 2.6.3 | 1 |
| factly/ | ca5bc71d1d5c | urllib3 | 2.6.3 | 1 |
| fiware/ | 3e3ec88d59ed | urllib3 | 2.6.3 | 1 |
| fiware/ | 29456835bb2c | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |
| fiware/ | 3c490a746f65 | urllib3 | 2.6.3 | 1 |
| flag5/ | 4ad5748bfcc6 | urllib3 | 2.6.3 | 1 |
| flagsmith/ | fd58556339a4 | urllib3 | 2.6.3 | 1 |
| flanksource/ | 689687a7cf95 | urllib3 | 2.6.3 | 1 |
| fossology/ | 8bd1f22ba7bb | urllib3 | 2.6.3 | 1 |
| frankescobar/ | 8a4d7e9308de | python-pip urllib3 | 9.0.1-2.3~ubuntu1.18.04.8+esm8 2.6.3 | 1 |
| frankescobar/ | cafa03b94dac | python-pip urllib3 | 9.0.1-2.3~ubuntu1.18.04.8+esm8 2.6.3 | 1 |
| freeipa/ | c87d77342bf5 | urllib3 | 2.6.3 | 1 |
| galaxy/ | e5c265fe9fcd | urllib3 | 2.6.3 | 1 |
| galaxy/ | 0267bad550e6 | urllib3 | 2.6.3 | 1 |
| galaxy/ | 8e577a626dfd | urllib3 | 2.6.3 | 1 |
| galaxy/ | e50a890e24c9 | urllib3 | 2.6.3 | 1 |
| geonode/ | 81b1d431b7e9 | python-pip | no fix listed | 1 |
| geopython/ | 84662ea6b78b | urllib3 | 2.6.3 | 1 |
| geoscienceaustralia/ | f4039b45572a | python-pip urllib3 | 9.0.1-2.3~ubuntu1.18.04.8+esm8 2.6.3 | 1 |
| gethue/ | 11b649636e68 | urllib3 | 2.6.3 | 1 |
| gethue/ | 5702b2c37ff9 | python-pip urllib3 | 9.0.1-2.3~ubuntu1.18.04.8+esm8 2.6.3 | 1 |
| gethue/ | 7d5c1b9f8a79 | python-pip | no fix listed | 1 |
| getsentry/ | 6ac37974fd2a | urllib3 | 2.6.3 | 1 |
| gluufederation/ | 1a1128b28b95 | urllib3 | 2.6.3 | 1 |
| gmaas2/ | 148fc2d9afe9 | urllib3 | 2.6.3 | 1 |
| gmelillo/ | c599d608a2f7 | urllib3 | 2.6.3 | 1 |
| goofball222/ | 43c0743701d4 | urllib3 | 2.6.3 | 1 |
| goofball222/ | 7bf26032dfce | urllib3 | 2.6.3 | 1 |
| gpappsoft/ | af7841adad26 | urllib3 | 2.6.3 | 1 |
| grafana/ | 499851658393 | urllib3 | 2.6.3 | 1 |
| graphiteapp/ | 04a0037cc2ae | urllib3 | 2.6.3 | 1 |
| greenbirdit/ | e99d53bdc944 | urllib3 | 2.6.3 | 1 |
| gristlabs/ | 6e71b1914a7e | urllib3 | 2.6.3 | 1 |
| grpl/ | c00aafee6629 | python-pip | no fix listed | 1 |
| guillh/ | 4fb99dbc32b2 | urllib3 | 2.6.3 | 1 |
| gurolakman/ | ed8fd2062548 | urllib3 | 2.6.3 | 1 |
| gurolakman/ | 9abb3882bcbd | urllib3 | 2.6.3 | 1 |
| gurolakman/ | 6537e8ed8de8 | urllib3 | 2.6.3 | 1 |
| gurolakman/ | ce23b20a8a17 | urllib3 | 2.6.3 | 1 |
| gurolakman/ | b22e746edd5d | urllib3 | 2.6.3 | 1 |
| gurolakman/ | bf18525c5ad9 | urllib3 | 2.6.3 | 1 |