PatchTheCVECVE-2021-23423: This affects the package bikeshed before 3.0.0
CVE-2021-23423 is a medium-severity flaw (CVSS 5.5) affecting bikeshed. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
This affects the package bikeshed before 3.0.0. This can occur when an untrusted source file containing include, include-code or include-raw block is processed. The contents of arbitrary files could be disclosed in the HTML output.
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.5 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 1.1% (top 34%) |
| CISA exploited list | No |
| Weakness | CWE-22 |
| Published | 2021-08-16 |
| 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-2021-23423?
bikeshed: upgrade to 3.0.0. Exact commands for each OS are on this page.
Is CVE-2021-23423 being exploited?
CVE-2021-23423 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-2021-23423 affect?
CVE-2021-23423 affects bikeshed. Severity is medium (CVSS 5.5). This affects the package bikeshed before 3.0.0. This can occur when an untrusted source file containing include, include-code or include-raw block is processed. The contents of arbitrary files could be disclosed in the HTML output.
How urgent is CVE-2021-23423?
Priority 41/100. Public exploit reference
Related CVEs
- CVE-2021-23422 HIGH 7.8 UPGRADE This affects the package bikeshed before 3.0.0