SQL Injection in Koha
CVE-2026-31844
An authenticated SQL Injection vulnerability (CWE-89) exists in the Koha staff interface in the /cgi-bin/koha/suggestion/suggestion.pl endpoint due to improper validation of the displayby parameter used by the GetDistinctValues functionality. Successful exploitation may lead to full compromise of the backend database, including disclosure or modification of stored data.
Vulnerability class: SQL Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (32.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.004 · change: -0.002
Affected products
- Koha — versions 25.11.00
- Koha Community — versions 24.11.0, 25.05.0, 25.11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c (issue-tracking, Issue Tracking)
- 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c (vendor-advisory, Not Applicable)
- 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c (release-notes, Release Notes)
Frequently asked questions
- What is CVE-2026-31844?
- CVE-2026-31844 is a high-severity vulnerability in Koha, classified under SQL Injection. CVSS score: 8.8/10. Published 2026-03-11.
- How severe is CVE-2026-31844?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2026-31844 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.