CVE-2026-55558
MediumAdvisory
Published 27 Aug 2026In the index since 8 Sept 2026
- Severity
- Medium
- worst across findings
- CVSS
- 5.9
- base score, highest
- EPSS
- 0.003
- 18th percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 2
- of 17,781 indexed, latest versions
- Container images
- 2
- deployed by those charts
- Fix available
- 1 of 1
- affected package
aiosmtplib: STARTTLS response injection
Carried by container images the latest versions of 2 of 17,781 indexed charts deploy, on 2 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| aiosmtplibpypi | 3.0.1, 5.1.0 | 5.1.2 | 2 |
- OSV records
- GHSA-vxj7-4xrp-5vr4
- Also known as
- PYSEC-2026-3805
Charts affected
2 by stars
Container images carrying it
2 by charts deploying them
A fixed version is listed for 1 of the 1 affected package.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| ghcr.io/ | 8d943799621b | aiosmtplib | 5.1.2 | 1 |
| ghcr.io/ | d1b0ce10b513 | aiosmtplib | 5.1.2 | 1 |