CVE-2026-59109

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

HIGH
8.8
CVSS Score
Published: August 13, 2026 at 04:40 PM UTC
Updated: October 24, 2026 at 04:10 PM UTC
1 product affected across 1 vendorZalktis

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v < 2026.1.5860 ≤ v < 2026.2.5920
Affected range stops below 2026.1.586, so it looks safe — our inference, not a vendor statement
Affected range stops below 2026.2.592, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Technical Description
Source: cverecord
https://offseq.com/en/research/zalktis-cve-2026-59109
US Government ResourcePermissions Required
Source: cverecord
https://cvd.cert.lv/disclosed/vuln-all-631428755
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://offseq.com/en/research/zalktis-cve-2026-59109/

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHENISA
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-89CWE-20

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