Vulnerability · Published Aug 13, 2026 · Assigned by ENISA

CVE-2026-59109Zalktis: SQL injection via partner-controlled fields in imported e-invoices

High 8.8

In plain English

A high-severity SQL injection in Zalktis from Zalktis Programmas (SIA "Zalktis Programmas"). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.4%top 66.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Zalktis Programmas (SIA "Zalktis Programmas")	Zalktis	0 – before 2026.1.5860 – before 2026.2.592

Weakness: CWE-89, CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://offseq.com/en/research/zalktis-cve-2026-59109 technical-description
https://cvd.cert.lv/disclosed/vuln-all-631428755 government-resource, permissions-required
https://offseq.com/en/research/zalktis-cve-2026-59109/ exploit