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 |
|---|---|---|---|---|
| opendatacube/ | 91870111837c | python-pip python-urllib3 urllib3 | 9.0.1-2.3~ubuntu1.18.04.8+esm8 no fix listed 2.6.3 | 1 |
| opendatacube/ | 1b90cdf68831 | python-pip python-urllib3 urllib3 | 9.0.1-2.3~ubuntu1.18.04.8+esm8 no fix listed 2.6.3 | 1 |
| opendatacube/ | 80df355a660b | urllib3 | 2.6.3 | 1 |
| openemr/ | 89eaa6d9a4e3 | urllib3 | 2.6.3 | 1 |
| openmined/ | b72f74a68b32 | py3-pip urllib3 | 26.1.1-r0 2.6.3 | 1 |
| openspeedtest/ | d4d62f4b7d85 | urllib3 | 2.6.3 | 1 |
| openstackhelm/ | f728510bab3c | urllib3 | 2.6.3 | 1 |
| openstackhelm/ | e07d75953d2e | urllib3 | 2.6.3 | 1 |
| openvpn/ | 2253c10ec652 | urllib3 | 2.6.3 | 1 |
| openwhisk/ | c80dba0de3aa | python-pip urllib3 | 9.0.1-2.3~ubuntu1.18.04.8+esm8 2.6.3 | 1 |
| openzaak/ | 2e65313b9b10 | urllib3 | 2.6.3 | 1 |
| openzaak/ | 2ca2ea6e0ae9 | urllib3 | 2.6.3 | 1 |
| owanio1992/ | 4ade8e1e4d7e | urllib3 | 2.6.3 | 1 |
| oxheadalpha/ | d9faed45bf1c | urllib3 | 2.6.3 | 1 |
| pangeo/ | 5fbe688a4f80 | urllib3 | 2.6.3 | 1 |
| pecan/ | 73b2074f3fec | urllib3 | 2.6.3 | 1 |
| phan2410/ | 4a86d138832d | urllib3 | 2.6.3 | 1 |
| phntom/ | d8e2a9f2f085 | urllib3 | 2.6.3 | 1 |
| phntom/ | 3adadbac8443 | urllib3 | 2.6.3 | 1 |
| phntom/ | 49b6488f618b | urllib3 | 2.6.3 | 1 |
| phntom/ | d2b844700b57 | urllib3 | 2.6.3 | 1 |
| phsmith/ | 0265a7616ae8 | urllib3 | 2.6.3 | 1 |
| platzio/ | d5e5972f344b | py3-urllib3 urllib3 | 1.26.20-r1 2.6.3 | 1 |
| pnnlmiscscripts/ | 155131891741 | urllib3 | 2.6.3 | 1 |
| pnnlmiscscripts/ | 8af4b7551d40 | urllib3 | 2.6.3 | 1 |
| prefecthq/ | 1df4b5b6238a | urllib3 | 2.6.3 | 1 |
| prompve/ | fcf041f0c24d | urllib3 | 2.6.3 | 1 |
| prompve/ | ff6749eb03b0 | urllib3 | 2.6.3 | 1 |
| pryorda/ | 79925e63e59f | urllib3 | 2.6.3 | 1 |
| pryorda/ | e0f5ba8b7856 | urllib3 | 2.6.3 | 1 |
| pschiffe/ | 37ebba8c2b8f | urllib3 | 2.6.3 | 1 |
| psono/ | 3b974b43ea03 | urllib3 | 2.6.3 | 1 |
| pyaephyohein/ | fdee05f2d441 | urllib3 | 2.6.3 | 1 |
| rdavidoff/ | 7ae4c5135771 | urllib3 | 2.6.3 | 1 |
| redash/ | 00d813437db5 | urllib3 | 2.6.3 | 1 |
| redash/ | 9392753c0376 | urllib3 | 2.6.3 | 1 |
| redash/ | c5c9148f5c38 | urllib3 | 2.6.3 | 1 |
| redislabs/ | 33561794c5c8 | urllib3 | 2.6.3 | 1 |
| redislabs/ | b03ab1426d0d | urllib3 | 2.6.3 | 1 |
| reportportal/ | 95ada4a216ce | urllib3 | 2.6.3 | 1 |
| reportportal/ | 2a0e6dc11161 | urllib3 | 2.6.3 | 1 |
| rezachalak/ | 34f694325191 | urllib3 | 2.6.3 | 1 |
| roadiehq/ | ef355bf5b639 | urllib3 | 2.6.3 | 1 |
| robmarkcole/ | 410275726459 | urllib3 | 2.6.3 | 1 |
| robotshop/ | 774b52c6180d | urllib3 | 2.6.3 | 1 |
| rommapp/ | b909e95d1aab | urllib3 | 2.6.3 | 1 |
| rook/ | 2f970c425617 | urllib3 | 2.6.3 | 1 |
| rook/ | 944a1dd70496 | urllib3 | 2.6.3 | 1 |
| saidsef/ | f17f7c435891 | urllib3 | 2.6.3 | 1 |
| salehmir/ | 1afa95f979e9 | urllib3 | 2.6.3 | 1 |