PatchTheCVECVE-2021-29133: Lack of verification in haserl, a component of Alpine Linux Configuration Framework, before 0.9.36 allows loca
CVE-2021-29133 is a medium-severity flaw (CVSS 5.5) affecting haserl. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Lack of verification in haserl, a component of Alpine Linux Configuration Framework, before 0.9.36 allows local users to read the contents of any file on the filesystem.
Why this priority
- Public exploit reference
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.5 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 1.1% (top 35%) |
| CISA exploited list | No |
| Published | 2021-03-24 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-29133?
haserl: upgrade to 0.9.36. Exact commands for each OS are on this page.
Is CVE-2021-29133 being exploited?
CVE-2021-29133 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-29133 affect?
CVE-2021-29133 affects haserl. Severity is medium (CVSS 5.5). Lack of verification in haserl, a component of Alpine Linux Configuration Framework, before 0.9.36 allows local users to read the contents of any file on the filesystem.
How urgent is CVE-2021-29133?
Priority 46/100. Public exploit reference; On your watchlist