Open-webui
CVE-2026-109294: 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 sup
CVE-2026-109294 Oct 12, 2026 Source: Vendor
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.
Source of record
The credited names below are quoted verbatim from the vendor's own advisory:
https://nvd.nist.gov/vuln/detail/CVE-2026-109294
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CVE-2026-109294
BR2026-0000-026835
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Credited as y4rvin
CVE-2026-109294
BR2026-0000-026836
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Credited as Classic298