CVE-2026-109294
Open WebUI 0.6.42 before 0.11.4 Memory Exhaustion via Compressed Remote Image
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-400 |
| Vendor | open-webui |
| Product | open-webui |
| Published | Oct 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
open-webui / open-webui
0.6.42 < 0.11.4
References
Credits
🔍 y4rvin Classic298