PT-2026-26617 · Bludit · Bludit

Yassin Abdelrazek · Published 2026-03-20 · Updated 2026-04-19 · CVE-2026-4420

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Bludit versions 3.17.2 and 3.18.0

Description Stored Cross-Site Scripting (XSS) exists in the page creating functionality. An authenticated attacker with page creation privileges, such as Author, Editor, or Administrator, can embed a malicious JavaScript payload in the tags field of a newly created article. This payload executes when a victim visits the URL of the uploaded resource, which is accessible without authentication. This issue could be used to automatically create a new site administrator if the victim possesses sufficient privileges.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-4420

Affected Products

Bludit

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-4420 · Security Note
• https://cert.pl/en/posts/2026/04/CVE-2026-4420 · Note
• https://github.com/bludit/bludit · Note
• https://twitter.com/CVEnew/status/2045972458126377073 · Twitter Post
• https://twitter.com/0xblackkk/status/2034955592221995497 · Twitter Post