CVE-2026-109288

MediumCVSS 6.4/10Last modified Oct 13, 2026

Description

Open WebUI before 0.11.4 contains a stored cross-site scripting vulnerability in MarkdownInlineTokens.svelte, which renders markdown link URLs into anchor hrefs without validating their scheme. Authenticated users can embed javascript: links in shared chats that, when clicked by a victim, steal the victim's JWT from local storage, including admins' tokens.

Metrics

CVSS 3.1 6.4/10CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-79

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published: Oct 12, 2026
Last modified: Oct 13, 2026
NVD status: Awaiting Analysis

Related CVEs from 2026

CVE-2026-1092896.3Open WebUI from 0.8.8 before 0.11.4 contains an improper authorization vulnerability that allows deactivated users to keep executing termina CVE-2026-109298.3Heap buffer overflow in ANGLE in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer CVE-2026-1092908.7Open WebUI from 0.11.1 before 0.11.4 contains a stored cross-site scripting vulnerability in DocxPreview.svelte that allows authenticated us CVE-2026-1092917.3Open WebUI from 0.6.33 before 0.11.4 contains a cross-site scripting vulnerability that allows authenticated users to execute script in vict CVE-2026-1092926.8Open WebUI from 0.6.27 before 0.11.4 contains an information disclosure vulnerability that allows destination servers to obtain user session CVE-2026-1092936.5Open WebUI from 0.11.0 before 0.11.4 contains an information disclosure vulnerability that allows authenticated non-admin users with tool ex CVE-2026-1092946.5Open WebUI from 0.6.42 before 0.11.4 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust CVE-2026-1092954.3Open WebUI from 0.11.0 before 0.11.4 contains a regular expression denial of service vulnerability that allows authenticated users to stall CVE-2026-1092964.3Open WebUI before 0.11.4 contains a missing authorization vulnerability that allows authenticated users to reach disabled model provider bac CVE-2026-1092976.5Open WebUI 0.11.0 before 0.11.4 contains a denial of service vulnerability in the automation recurrence-rule validator, whose sub-daily freq CVE-2026-1092986.5Open WebUI 0.11.0 before 0.11.4 compiles user-chosen grep patterns for its knowledge and chat file search tools with a regex engine that exp CVE-2026-1092996.5Open WebUI from 0.9.0 before 0.11.4 contains a denial of service vulnerability that allows authenticated users with automations permission t