PatchTheCVECVE-2020-5640: Local file inclusion vulnerability in OneThird CMS v1.96c and earlier allows a remote unauthenticated attacker
CVE-2020-5640 is a critical-severity flaw (CVSS 9.8) affecting onethird. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Local file inclusion vulnerability in OneThird CMS v1.96c and earlier allows a remote unauthenticated attacker to execute arbitrary code or obtain sensitive information via unspecified vectors.
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 | 2.5% (top 15%) |
| CISA exploited list | No |
| Published | 2020-10-20 |
| 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-2020-5640?
onethird: upgrade to newer than 1.96c. Exact commands for each OS are on this page.
Is CVE-2020-5640 being exploited?
CVE-2020-5640 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-2020-5640 affect?
CVE-2020-5640 affects onethird. Severity is critical (CVSS 9.8). Local file inclusion vulnerability in OneThird CMS v1.96c and earlier allows a remote unauthenticated attacker to execute arbitrary code or obtain sensitive information via unspecified vectors.
How urgent is CVE-2020-5640?
Priority 60/100. Critical severity; Remotely exploitable, no login, no user action