{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-105106", "assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "state": "PUBLISHED", "assignerShortName": "TuranSec", "dateReserved": "2026-10-03T11:45:52.353Z", "datePublished": "2026-10-14T07:23:03.069Z", "dateUpdated": "2026-10-14T07:23:03.069Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "shortName": "TuranSec", "dateUpdated": "2026-10-14T07:23:03.069Z"}, "title": "Koha authenticated OS command injection in tools/scheduler.pl via the jobid parameter when deleting a scheduled task", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-78", "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE"}]}], "affected": [{"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"}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>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 =&gt; 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.</p>"}]}], "references": [{"url": "https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=42674", "tags": ["issue-tracking"]}, {"url": "https://download.koha-community.org/"}, {"url": "https://www.cve.org/CVERecord?id=CVE-2025-30076", "tags": ["related"]}, {"url": "https://www.cve.org/CVERecord?id=CVE-2024-28739", "tags": ["related"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}}], "credits": [{"lang": "en", "value": "Sanjar Tulkinov Anvar o'g'li", "type": "finder"}], "source": {"discovery": "UNKNOWN"}}}}

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