All vulnerabilities
CVE-2026-109294GHSA-w8j8-jv6j-3m47

open-webui: Open WebUI 0.6.42 before 0.11.4 Memory Exhaustion via Compressed Remote Image

open-webui open-webui
Open in ThreatlineRecord JSON
CVSS
7.1High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.31%Chance of exploitation activity in the next 30 days, higher than 22% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in0.11.4Fixed versionCVE List
Published12 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Open WebUI from 0.6.42 before 0.11.4 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust server memory by supplying compressed remote image URLs in chat messages. Attackers can point the image field at a host returning gzip-encoded responses, which get_image_base64_from_url decompresses unbounded, causing denial of service for all users.

Text from CVE List

Affected versions 2

  • open-webuiaffected: 0.6.42 before 0.11.4CVE List
  • open-webuiunaffected: 0.11.4CVE List

References 2