CVE-2026-53524
The CVE Severity Digest turns the National Vulnerability Database feed into a prioritized security briefing. It groups affected software into practical product families, distinguishes patch and mitigation references from general citations, and ranks the vulnerabilities most likely to matter to technology operators while preserving direct links to the official record.
- CVE
- CVE-2026-53524
- Description
- WeeChat (Wee Enhanced Environment for Chat) is a free chat client. In versions 4.3.0 through 4.9.0, the WeeChat relay module's WebSocket permessage-deflate decompression function relay_websocket_inflate() has no upper bound on output size. An authenticated relay user can send a small compressed WebSocket frame (~100 bytes) that decompresses to gigabytes, exhausting all server memory and crashing the entire WeeChat process. The api protocol enables permessage-deflate and requires authentication before WebSocket upgrade. Version 4.9.1 patches the issue.
- Published
- 08/21/2026
- Severity
- MEDIUM
- CVSS
- 6.5
- Priority score
- 54.458