CVE-2025-12999

A flaw was found in openvsx-server. This vulnerability allows an unauthenticated remote attacker to achieve arbitrary code execution on client machines through HTTP cache poisoning. The server generates download and verification URLs from untrusted proxy headers, such as X-Forwarded-Host, without...

@theia/vsx-registry (>=1.1.0-next.14531578, <=1.69.0), openvsx-server (>=1.59.0, <=1.59.1) potentially affected by CVE-2026-19884 via @theia/plugin-ext-vscode (>=1.1.0-next.a62a6b92, <=1.69.0-next.81)

@theia/plugin-ext-vscode NPM version =1.1.0-next.a62a6b92, =1.1.0-next.14531578, =1.59.0, =1.59.1 Source cves: CVE-2026-19884 Source advisory: SNYK:JS-THEIAPLUGINEXTVSCODE-18855353...