CVE-2026-13323: open vsx before 1.0.2 (exclusive); +1 more affected products

Affected technology

open vsx · before 1.0.2 (exclusive)
eclipse

Eclipse Open VSX · 0.1.0 to before 1.0.2
Eclipse Foundation

Description’s affected range: before 1.0.2

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · User interaction required

Attack conditions (NVD, CVSS 3.1): Network (remote) · Low privileges required · User interaction required

What an attacker can do

An unauthenticated attacker can register a publisher account, upload a VSIX containing a crafted HTML payload, and induce an authenticated user to visit the resulting URL. Vendor/CNA’s CVSS 3.1 assessment (base score 4.1/10) rates confidentiality and availability impact as none; integrity impact as low. NVD’s CVSS 3.1 assessment (base score 8.7/10) rates confidentiality and integrity impact as high; availability impact as none.