CVE-2026-55206
MediumAdvisory
Published 19 Jun 2026In the index since 6 Sept 2026
- Severity
- Medium
- worst across findings
- CVSS
- 6.9
- base score, highest
- EPSS
- 0.003
- 25th percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 4
- of 17,781 indexed, latest versions
- Container images
- 4
- deployed by those charts
- Fix available
- 1 of 1
- affected package
py7zr: O(n^2) algorithmic complexity DoS in PackInfo._read()
Carried by container images the latest versions of 4 of 17,781 indexed charts deploy, on 4 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| py7zrpypi | 0.20.8, 0.22.0 | 1.1.3 | 4 |
- OSV records
- GHSA-h4gh-22qq-72r7
- Also known as
- PYSEC-2026-2973
Charts affected
4 by stars
| Chart | Latest | Affected images | Radar Score |
|---|---|---|---|
| calibre-webk8s-home-lab-repo | 9.1.1 | 1 of 1See more | 4,477 |
| calibre-webcharts-derwitt-devVerified publisher | 1.1.2 | 1 of 1See more | 4,911 |
| aperagkubeblocksVerified publisher | 0.0.0-nightly | 1 of 3See more | 8,405 |
| calibre-webvista | 0.1.3 | 1 of 1See more | 7,628 |
Container images carrying it
4 by charts deploying them
A fixed version is listed for 1 of the 1 affected package.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| apecloud/ | 8ac9947a2c84 | py7zr | 1.1.3 | 1 |
| linuxserver/ | 241009026e6f | py7zr | 1.1.3 | 1 |
| ghcr.io/ | 7c0464228f2f | py7zr | 1.1.3 | 1 |
| ghcr.io/ | aa7d5d5dd6be | py7zr | 1.1.3 | 1 |