Cross-Site Scripting (XSS) in Koha Library Management System (CVE-2026-50765)
Summary
Cross-site scripting in Koha Library Management System (CVE-2026-50765). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
Cross-Site Scripting (XSS) vulnerability in the patron restriction type administration page of Koha Library Management System through 25.11 allows an authenticated remote attacker with administrator privileges to inject arbitrary web scripts via the restriction type label (display_text field)
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-50765 has been found in Koha Library Management System.
Risk of unauthorized operations or information disclosure. CVSS score: 6.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Koha Library Management System CVE-2026-50765" on the vendor's site.
CVE-2026-50765 (Koha Library Management System) — CWE-79 / CVSS v3 6.1
Attack vector: remote (network-reachable) / unauthenticated
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in Koha Library Management System.
Check the vendor advisory for the affected versions of Koha Library Management System.
Severity: Medium (CVSS 6.1/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Koha Library Management System を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- exploit lgnas.gitbook.io
- web nvd.nist.gov
- web cve@mitre.org
- web github.com