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
- 832
- of 17,790 indexed, latest versions
- Container images
- 888
- 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 832 of 17,790 indexed charts deploy, on 888 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 | 861 |
| 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 | 58 |
| 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
832 by stars
Container images carrying it
888 by charts deploying them
A fixed version is listed for 5 of the 5 affected packages.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| santisbon/ | e807283f8d69 | urllib3 | 2.6.3 | 1 |
| santisbon/ | 8ee3a1697227 | urllib3 | 2.6.3 | 1 |
| scrapinghub/ | a5f89bc84606 | python-pip | 9.0.1-2.3~ubuntu1.18.04.8+esm8 | 1 |
| seafileltd/ | 6693911bcc40 | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |
| seafileltd/ | 70628f29c663 | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |
| seafileltd/ | 7ac833196f60 | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |
| seafileltd/ | d0c66e4621bd | python-pip urllib3 | no fix listed 2.6.3 | 1 |
| seafileltd/ | ed0fcda5e6a9 | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |
| searx/ | 3dbb3a6d9419 | urllib3 | 2.6.3 | 1 |
| seldonio/ | 1d0da98a2d76 | urllib3 | 2.6.3 | 1 |
| seldonio/ | 4e985d2006a8 | urllib3 | 2.6.3 | 1 |
| shadowrhyder/ | 4aae9270356a | urllib3 | 2.6.3 | 1 |
| shaowenchen/ | 26da43bb5b66 | python-pip | no fix listed | 1 |
| shaowenchen/ | 315444f703f4 | python-pip | no fix listed | 1 |
| sharanalwar/ | 8d3cab80df49 | urllib3 | 2.6.3 | 1 |
| sirrend/ | 699e79e3d4e2 | urllib3 | 2.6.3 | 1 |
| sirrend/ | 7ca688c7abf5 | urllib3 | 2.6.3 | 1 |
| sirrend/ | 997866417011 | urllib3 | 2.6.3 | 1 |
| sissbruecker/ | 0c5dddf0b37c | urllib3 | 2.6.3 | 1 |
| sissbruecker/ | a222fb777e1f | urllib3 | 2.6.3 | 1 |
| skylenet/ | 210353ce7c89 | urllib3 | 2.6.3 | 1 |
| smarketshq/ | cfc765b27e64 | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | 70fb11d4f531 | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | 4fb86885d64d | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | 4bfda60829fe | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | 07477060bba8 | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | c969f7677983 | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | 9b4211832429 | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | 999f2ff2c128 | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | 51cb17626519 | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | 74e35f64db68 | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | 19d3d26d53ee | python-pip urllib3 | 9.0.1-2.3~ubuntu1.18.04.8+esm8 2.6.3 | 1 |
| socialmediamacroscope/ | 6418f9bdb4d2 | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | f508216be63c | python-pip urllib3 | 9.0.1-2.3~ubuntu1.18.04.8+esm8 2.6.3 | 1 |
| socialmediamacroscope/ | b351c21422e6 | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | ca863306314b | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | 724f3f5702e0 | urllib3 | 2.6.3 | 1 |
| socialmediamacroscope/ | fa490acac2f8 | urllib3 | 2.6.3 | 1 |
| softonic/ | a64d6c0e0ae5 | urllib3 | 2.6.3 | 1 |
| softonic/ | d9487a8dd70f | urllib3 | 2.6.3 | 1 |
| someblackmagic/ | 6eca64b6b440 | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |
| splunk/ | c4e0d3146226 | urllib3 | 2.6.3 | 1 |
| sruthitanneru/ | e565ea454ffd | urllib3 | 2.6.3 | 1 |
| sslhep/ | ab0090083567 | urllib3 | 2.6.3 | 1 |
| sslhep/ | d9e9ecb12d59 | urllib3 | 2.6.3 | 1 |
| stackstorm/ | 88235ba70cad | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |
| stackstorm/ | 6f56d239d280 | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |
| stackstorm/ | 33ecfda16608 | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |
| stackstorm/ | 4e3f8c7ca52d | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |
| stackstorm/ | f190a6212195 | python-urllib3 urllib3 | 1.25.8-2ubuntu0.4+esm3 2.6.3 | 1 |