CVE-2021-33503
HighAdvisory
Published 1 Jun 2021In the index since 6 Sept 2026
- Severity
- High
- worst across findings
- CVSS
- 7.5
- base score, highest
- EPSS
- 0.033
- 88th percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 159
- of 17,781 indexed, latest versions
- Container images
- 165
- deployed by those charts
- Fix available
- 3 of 3
- affected packages
Catastrophic backtracking in URL authority parser when passed URL containing many @ characters
Carried by container images the latest versions of 159 of 17,781 indexed charts deploy, on 165 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| urllib3pypi | 1.7.1, 1.25.2, 1.25.3, 1.25.7+9 more | 1.26.5 | 148 |
| python-pipdeb | 20.0.2-5ubuntu1.1, 20.0.2-5ubuntu1.5, 20.0.2-5ubuntu1.6 | 20.0.2-5ubuntu1.7 | 24 |
| python-urllib3deb | 1.25.8-2ubuntu0.1 | 1.25.8-2ubuntu0.2 | 15 |
- OSV records
- GHSA-q2q7-5pp4-w6pgUBUNTU-CVE-2021-33503PYSEC-2021-108
- Also known as
- USN-5812-1
Charts affected
159 by stars
| Chart | Latest | Affected images | Radar Score |
|---|---|---|---|
| horcruxstakewise | 1.0.1 | 1 of 1See more | 1,421 |
| cost-analyzerstatcan | 1.82.2 | 1 of 9See more | 16,506 |
| datapusherstatcan | 1.0.0 | 1 of 1See more | 3,044 |
| prometheus-operatorstatcan | 0.2.2 | 1 of 7See more | 12,237 |
| gtmetrix-bqt3n | 1.0.0 | 1 of 1See more | 1,287 |
| jenkinstnh | 2.7.1 | 1 of 2See more | 4,423 |
| ambassadorwenerme | 6.9.5 | 1 of 2See more | 4,086 |
| docker-hub-rate-limit-exporterwiremindVerified publisher | 0.3.0 | 1 of 1See more | 1,843 |
| powerdnsadminwitcom-gmbh | 0.3.4 | 1 of 1See more | 2,643 |
Container images carrying it
165 by charts deploying them
A fixed version is listed for 3 of the 3 affected packages.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| gcr.io/ | 0ee5f968d2ab | urllib3 | 1.26.5 | 1 |
| ghcr.io/ | 3191b771a6f2 | urllib3 | 1.26.5 | 1 |
| ghcr.io/ | 6fde1edc0983 | urllib3 | 1.26.5 | 1 |
| ghcr.io/ | d6e901ad0ebd | urllib3 | 1.26.5 | 1 |
| ghcr.io/ | 3fbe4c29d14c | python-urllib3 urllib3 | 1.25.8-2ubuntu0.2 1.26.5 | 1 |
| ghcr.io/ | b96f0e97ab3f | urllib3 | 1.26.5 | 1 |
| ghcr.io/ | 66c4c9e18e40 | urllib3 | 1.26.5 | 1 |
| ghcr.io/ | ff2af53897e7 | python-pip | 20.0.2-5ubuntu1.7 | 1 |
| ghcr.io/ | 821fd6a6f2cd | urllib3 | 1.26.5 | 1 |
| ghcr.io/ | 3c8375dc5487 | python-pip | 20.0.2-5ubuntu1.7 | 1 |
| ghcr.io/ | 1dcca70c6446 | python-pip | 20.0.2-5ubuntu1.7 | 1 |
| public.ecr.aws/ | 573779e57fae | python-urllib3 urllib3 | 1.25.8-2ubuntu0.2 1.26.5 | 1 |
| quay.io/ | 9663f06adcb1 | urllib3 | 1.26.5 | 1 |
| quay.io/ | 18feb3906286 | urllib3 | 1.26.5 | 1 |
| registry.gitlab.com/ | f6385712935f | python-pip | 20.0.2-5ubuntu1.7 | 1 |