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SQL InjectionWeakness · CWE-89

CVE-2026-6428

HIGH · 7.6 CVSS v3.1 Published 2026-06-13
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
82/100
Remediation priority · High
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
SQL Injection in reports/catalogue_out.pl in Koha Community Koha through 22.11.37, 23.x, 24.x before 24.11.16, 25.05.x before 25.05.11, 25.11.x before 25.11.05, 26.05.x before 26.05.01, and 26.11.x before 26.11.00 allows an authenticated staff user with the Reports module flag to read arbitrary data from the Koha application database via the Filter URL parameter when the Criteria parameter matches /branchcode/.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

SQL Injection in Koha's reports/catalogue_out.pl allows authenticated staff users with Reports module privileges to inject unsanitized input via the Filter parameter into a LIKE clause. The calculate subroutine concatenates the Filter value directly into SQL without parameterization, enabling error-based injection (EXTRACTVALUE) to exfiltrate sensitive data from tables including borrowers (password hashes, 2FA secrets, PII), api_keys, and sessions.

MitigationUpgrade to fixed Koha versions (22.11.38, 24.11.16, 25.05.11, 25.11.05, 26.05.01, 26.11.00 or later) which replace raw string concatenation with parameterized placeholders. Alternatively, implement input validation and DBI bind parameters as an interim control.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
Low

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Koha installation and version
    Locate the Koha installation directory and check the version file (typically koha-conf.xml or a VERSION file in the root directory). Run: grep -i version /path/to/koha/lib/Koha.pm 2>/dev/null || cat /usr/share/koha/lib/Koha/Version.pm 2>/dev/null | grep -i version
    Affected if The installed version is below 22.11.38, 24.11.16, 25.05.11, 25.11.05, 26.05.01, or 26.11.00 (older vulnerable versions)
  2. Locate the vulnerable script
    Find the catalogue_out.pl file in the reports directory. Common paths include: /usr/share/koha/lib/C4/Reports/catalogue_out.pl or /var/lib/koha/library/koha/lib/C4/Reports/catalogue_out.pl
    Affected if The file exists in the installation and originates from an unpatched version
  3. Inspect the Filter parameter handling in the code
    Open the catalogue_out.pl file and search for string concatenation involving 'Filter' and LIKE clauses. Look for patterns like: $dbh->prepare("SELECT ... LIKE '%" . $filter . "%'") or similar direct concatenation without parameter binding
    Affected if Code shows direct string concatenation of the Filter parameter into SQL (e.g., ... LIKE '%" . $filter . "%') instead of parameterized placeholders like ? or :filter
  4. Verify Reports module is enabled and accessible
    Check the system preferences or permission tables for the Reports module. In the Koha admin interface, navigate to: More > Administration > Global system preferences > Administration > and confirm reports is not disabled, or query the user_permissions table for reports-related privileges
    Affected if The Reports module is enabled and staff users have access to it via the permissions system

The environment is affected if running a Koha version below the patched releases AND the vulnerable catalogue_out.pl script contains unsanitized Filter parameter concatenation accessible to authenticated staff with Reports permissions.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade to fixed Koha versions (22.11.38, 24.11.16, 25.05.11, 25.11.05, 26.05.01, 26.11.00 or later) which replace raw string concatenation with parameterized placeholders. Alternatively, implement input validation and DBI bind parameters as an interim control.

Recommended fix High confidence

Upgrade to the latest patch release for your branch: 22.11.38, 24.11.16, 25.05.11, 25.11.05, 26.05.01, or 26.11.00 (or later)

  1. Identify the current Koha version by checking the about page or koha-conf.xml
  2. Determine which release branch (22.x, 24.x, 25.05.x, 25.11.x, 26.05.x, or 26.11.x) the installation is running
  3. If on 22.x branch, upgrade to 22.11.38 or later
  4. If on 24.x branch, upgrade to 24.11.16 or later
  5. If on 25.05.x branch, upgrade to 25.05.11 or later
  6. If on 25.11.x branch, upgrade to 25.11.05 or later
  7. If on 26.05.x branch, upgrade to 26.05.01 or later
  8. If on 26.11.x branch, upgrade to 26.11.00 or later
Caveat Standard Koha minor version upgrades are generally low-risk and backward compatible; test in staging first to verify local customizations and reports work with the patched version

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing8.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,800
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-6428 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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