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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.

PUBLISHED Reserved 2026-01-27 | Published 2026-04-30 | Updated 2026-04-30 | Assigner CERT-PL




MEDIUM: 4.6CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Product status

Default status
unaffected

Any version before 1.3.4
affected

Credits

Marek Figielski (Vanilla.pl) finder

References

www.wolterskluwer.com/pl-pl/solutions/lex-baza-dokumentow product

cert.pl/posts/2026/04/CVE-2025-1493 third-party-advisory

cve.org (CVE-2026-1493)

nvd.nist.gov (CVE-2026-1493)

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