How severe is CVE-2026-31844?

CVE-2026-31844 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-31844 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-31844?

CVE-2026-31844 primarily affects Koha. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-31844?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-31844 have an EU (EUVD) identifier?

Yes. CVE-2026-31844 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11109.

When was CVE-2026-31844 published?

CVE-2026-31844 was published on 2026-03-11 and last updated on 2026-06-17.

CVE-2026-31844

CVE-2026-31844 is a high-severity vulnerability in Koha with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 8.7
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11109
Weakness: CWE-89
Affected product: Koha
Published: 2026-03-11
Last modified: 2026-06-17

Description

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. A low-privileged staff user can inject arbitrary SQL queries via crafted requests to this parameter, allowing execution of unintended SQL statements and exposure of sensitive database information. Successful exploitation may lead to full compromise of the backend database, including disclosure or modification of stored data.

Frequently asked questions

What is 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. A low-privileged staff user can inject arbitrary SQL queries via crafted requests to this parameter, allowing execution of unintended SQL statements and exposure of sensitive database information. Successful exploitation may lead to full compromise of the backend database, including disclosure or modification of stored data.
How severe is CVE-2026-31844?: CVE-2026-31844 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-31844 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-31844?: CVE-2026-31844 primarily affects Koha. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-31844?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-31844 have an EU (EUVD) identifier?: Yes. CVE-2026-31844 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11109.
When was CVE-2026-31844 published?: CVE-2026-31844 was published on 2026-03-11 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:koha:koha:*:*:*:*:*:*:*:*
cpe:2.3:a:koha:koha:25.11.00:*:*:*:*:*:*:*

More vulnerabilities in Koha

CVE-2014-1925 — Critical (CVSS 9.8): SQL injection vulnerability in the MARC framework import/export function (admin/import_export_framework.pl) in Koha…
CVE-2014-1924 — Critical (CVSS 9.8): The MARC framework import/export function (admin/import_export_framework.pl) in Koha before 3.8.23, 3.10.x before…
CVE-2015-4633 — Critical (CVSS 9.8): Multiple SQL injection vulnerabilities in Koha 3.14.x before 3.14.16, 3.16.x before 3.16.12, 3.18.x before 3.18.08, and…
CVE-2024-28740 — Critical (CVSS 9.6): Cross Site Scripting vulnerability in Koha ILS 23.05 and before allows a remote attacker to execute arbitrary code via…
CVE-2018-1000669 — High (CVSS 8.8): KOHA Library System version 16.11.x (up until 16.11.13) and 17.05.x (up until 17.05.05) contains a Cross Site Request…
CVE-2015-4639 — High (CVSS 8.8): Cross-site scripting (XSS) vulnerability in opac-addbybiblionumber.pl in Koha 3.14.x before 3.14.16, 3.16.x before…

All CVEs affecting Koha →

Other CWE-89 (SQL Injection) vulnerabilities

CVE-2026-54350 — Critical (CVSS 10.0): Budibase is an open-source low-code platform. Prior to 3.39.12, an unauthenticated visitor of any published Budibase…
CVE-2026-8054 — Critical (CVSS 10.0): Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in the Publish Audit API endpoints…
CVE-2026-42287 — Critical (CVSS 10.0): Emlog is an open source website building system. Prior to version 2.6.11, direct SQL injection in article creation and…
CVE-2026-3325 — Critical (CVSS 10.0): SQL injection (SQLi) in MegaCMS v12.0.0, specifically in the “id_territorio” parameter of the…
CVE-2025-10878 — Critical (CVSS 10.0): A SQL injection vulnerability exists in the login functionality of Fikir Odalari AdminPando 1.0.1 before 2026-01-26.…
CVE-2025-57792 — Critical (CVSS 10.0): Explorance Blue versions prior to 8.14.9 contain a SQL injection vulnerability caused by insufficient validation of…

Browse all CWE-89 (SQL Injection) vulnerabilities →