PatchTheCVECVE-2021-35514: Narou (aka Narou.rb) before 3.8.0 allows Ruby Code Injection via the title name or author name of a novel.
CVE-2021-35514 is a critical-severity flaw (CVSS 9.8) affecting narou. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Narou (aka Narou.rb) before 3.8.0 allows Ruby Code Injection via the title name or author name of a novel.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.4% (top 27%) |
| CISA exploited list | No |
| Weakness | CWE-94 |
| Published | 2021-06-28 |
| 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-2021-35514?
narou: upgrade to 3.8.0. Exact commands for each OS are on this page.
Is CVE-2021-35514 being exploited?
CVE-2021-35514 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-2021-35514 affect?
CVE-2021-35514 affects narou. Severity is critical (CVSS 9.8). Narou (aka Narou.rb) before 3.8.0 allows Ruby Code Injection via the title name or author name of a novel.
How urgent is CVE-2021-35514?
Priority 58/100. Critical severity; Remotely exploitable, no login, no user action