Koha authenticated OS command injection in tools/scheduler.pl via the jobid parameter when deleting a scheduled task
Koha is vulnerable to OS command injection in the Task Scheduler deletion path. The tools/scheduler.pl handler accepts the jobid request parameter for op=cud-delete and passes it to C4::Scheduler::remove_at_job without validating it. Schedule::At::remove substitutes the supplied job ID into an atrm command string without quoting or escaping it and executes the command through a single-argument system() call, which invokes the shell. An authenticated staff user with the tools => schedule_tasks permission can therefore execute arbitrary operating-system commands as the Koha web/application user by supplying shell metacharacters in jobid. The issue is fixed in Koha 24.11.20, 25.05.15, 25.11.09, and 26.05.04, and in the 26.11 development branch.
CVE-2026-105106
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-105106
Koha
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Koha Community",
"product": "Koha",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "24.11.00",
"versionType": "custom"
},
{
"status": "affected",
"version": "24.11.00",
"lessThan": "24.11.20",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.05.00",
"lessThan": "25.05.15",
"versionType": "custom"
},
{
"status": "affected",
"version": "25.11.00",
"lessThan": "25.11.09",
"versionType": "custom"
},
{
"status": "affected",
"version": "26.05.00",
"lessThan": "26.05.04",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-105106
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #22884 · Revision 1
- Added to Heist Feed
- Publisher date