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CVE-2026-59109

8.8 · HIGH

SQL injection in the Zalktis accounting application via trading-partner-controlled text fields in received electronic invoices.

Published Aug 13, 2026CWE-20EPSS 0.45%

Overview

CVE-2026-59109 is a high-severity vulnerability. It was published on August 13, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

SQL injection in the Zalktis accounting application via

trading-partner-controlled text fields in received electronic invoices. When

importing a received e-invoice (UBL/PEPPOL) or an e-commerce export, Zalktis

concatenates partner-controlled values directly into SQL statement text using

string concatenation, with neither parameterised queries nor escaping. The

application's own escaping helper, Dazadi.sql_txt(),

is not invoked on these code paths, so a party that sends an invoice can break

out of the string literal and alter the query logic.

This issue affects Zalktis: before 2026.1.586 and before 2026.2.592.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refcvd.cert.lv/disclosed/vuln-all-631428755Refoffseq.com/en/research/zalktis-cve-2026-59109Refoffseq.com/en/research/zalktis-cve-2026-59109/

How CyberStrike helps

Frequently asked questions

What is CVE-2026-59109?

CVE-2026-59109 is a high-severity vulnerability. It was published on August 13, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-59109?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-59109?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-59109?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-59109 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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