Koha authenticated OS command injection in tools/scheduler.pl via the jobid parameter when deleting a scheduled task

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-105106
StatePUBLISHED
AssignerTuranSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-14 08:17:03 UTC
Updated2026-10-15 15:53:08 UTC
DescriptionKoha 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.016130000 probability, percentile 0.754850000 (date 2026-10-14)

Problem Types: CWE-78 | CWE-78 CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

VersionSourceTypeScoreSeverityVector
3.1309f9ea4-e3e9-4c6c-b79d-e8eb01244f2cSecondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Koha Community Koha affected 24.11.00 custom Not specified
CNA Koha Community Koha affected 24.11.00 24.11.20 custom Not specified
CNA Koha Community Koha affected 25.05.00 25.05.15 custom Not specified
CNA Koha Community Koha affected 25.11.00 25.11.09 custom Not specified
CNA Koha Community Koha affected 26.05.00 26.05.04 custom Not specified

References

ReferenceSourceLinkTags
bugs.koha-community.org/bugzilla3/show_bug.cgi 134c704f-9b21-4f2e-91b3-4a467353bcc0 bugs.koha-community.org
download.koha-community.org 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c download.koha-community.org
www.cve.org/CVERecord 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c www.cve.org
www.cve.org/CVERecord 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c www.cve.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Sanjar Tulkinov Anvar o'g'li (en)

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