PatchTheCVECVE-2026-27626: OliveTin gives access to predefined shell commands from a web interface
CVE-2026-27626 is a critical-severity flaw (CVSS 9.9) affecting olivetin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
OliveTin gives access to predefined shell commands from a web interface. In versions up to and including 3000.10.0, OliveTin's shell mode safety check (`checkShellArgumentSafety`) blocks several dangerous argument types but not `password`. A user supplying a `password`-typed argument can inject shell metacharacters that execute arbitrary OS commands. A second independent vector allows unauthenticated RCE via webhook-extracted JSON values that ski
Why this priority
- Critical severity
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.9 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.6% (top 50%) |
| CISA exploited list | No |
| Weakness | CWE-78 |
| Published | 2026-02-25 |
| 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-2026-27626?
olivetin: upgrade to newer than 3000.10.0. Exact commands for each OS are on this page.
Is CVE-2026-27626 being exploited?
CVE-2026-27626 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-2026-27626 affect?
CVE-2026-27626 affects olivetin. Severity is critical (CVSS 9.9). OliveTin gives access to predefined shell commands from a web interface. In versions up to and including 3000.10.0, OliveTin's shell mode safety check (`checkShellArgumentSafety`) blocks several dangerous argument types but not `password`.
How urgent is CVE-2026-27626?
Priority 52/100. Critical severity; Public exploit reference
Related CVEs
- CVE-2026-31817 HIGH 8.5 UPGRADE OliveTin gives access to predefined shell commands from a web interface
- CVE-2026-30233 MEDIUM 6.5 UPGRADE OliveTin gives access to predefined shell commands from a web interface
- CVE-2026-30225 MEDIUM 5.3 UPGRADE OliveTin gives access to predefined shell commands from a web interface
- CVE-2026-30224 MEDIUM 5.4 UPGRADE OliveTin gives access to predefined shell commands from a web interface
- CVE-2026-30223 HIGH 8.8 UPGRADE OliveTin gives access to predefined shell commands from a web interface