Vulnerability · Published Apr 30, 2026 · Assigned by CERT-PL

CVE-2026-1493Cross-Site Scripting in LEX Baza Dokumentów

Medium 4.6

In plain English

A medium-severity cross-site scripting in LEX Baza Dokumentów from Wolters Kluwer Polska. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).

Severity (CVSS 4.0)4.6Medium

Exploit odds (30 days)0.2%top 92.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

LEX Baza Dokumentów is vulnerable to DOM-based XSS in "em" cookie parameter. The application unsafely processes the parameter on the client side, allowing an attacker to execute arbitrary JavaScript in the context of the victim's browser. An attacker with ability to set a cookie can perform a more severe attack, so we evaluate the impact and risk of exploitation as minimal. However, the vendor considered this a vulnerability and released a security patch. This issue was fixed in version 1.3.4.

Affected products (as reported)

Vendor	Product	Versions
Wolters Kluwer Polska	LEX Baza Dokumentów	0 – before 1.3.4

Weakness: CWE-79 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

References

https://www.wolterskluwer.com/pl-pl/solutions/lex-baza-dokumentow product
https://cert.pl/posts/2026/04/CVE-2025-1493 third-party-advisory