CVE-2026-72610 Koha Community Koha - Stored SQL Injection via Patron lang Field in Issue Slip Generation
Authenticated staff can cause denial of service via stored SQL injection in the patron language field during issue slip generation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-72610?
CVE-2026-72610 is a medium-severity SQL injection vulnerability in Koha, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A stored SQL injection vulnerability in Koha through 24.11.17, 25.05.12, 25.11.06, and 26.05.01 allows authenticated staff with the borrowers => edit_borrowers permission to cause a time-based denial of service by storing a SQL payload in a patron lang field. The value is concatenated raw into a subquery in Koha::AdditionalContents->search_for_display when an issue slip is printed for the affected patron. The 25-character column length limits exploitation to timing attacks; data extraction is not practical. The stored payload executes on each subsequent issue-slip print, scaling linearly with the SLEEP value and the number of slip-news rows.
Weakness: CWE-89
Which versions are affected by CVE-2026-72610?
How do I fix CVE-2026-72610?
No fix has been published for CVE-2026-72610 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-72610 being exploited?
There is no known exploitation of CVE-2026-72610 in the wild and no public exploit code.
Sources
Also known as GHSA-jjgf-vgv7-fgjv.