CVE-2026-88001

medium

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform.

Vendor / product: Openwebui — open webui

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, server-side web fetches did not reapply WEB_FETCH_FILTER_LIST or private-address controls to HTTP redirect destinations when AIOHTTP_CLIENT_ALLOW_REDIRECTS was enabled. An authenticated user could redirect the aiohttp and requests fetch paths to excluded hosts, loopback, private networks, or cloud metadata services and route resulting content into web search, URL ingestion, page-fetch tools, or chat image processing. This issue is fixed in version 0.11.1.

CVSS

5.0

5.0 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Severity source: NVD CVSS v3.1 (security-advisories@github.com)

Timeline (UTC)

Published: 2026-09-09 22:18

Modified: 2026-09-14 19:56

NVD status: Analyzed

Last synced 2 days ago

Verified against the source API 2026-10-27 06:52 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

openwebui / open_webui ≥0.9.5 <0.11.1

Weakness classification (CWE)

CWE-918

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://github.com/open-webui/open-webui/security/advisories/GHSA-5x7x-4c3c-qf5w

Patch / mitigation: https://github.com/open-webui/open-webui/commit/e3e4bd87df6fc629e7e22081d980d55a7632b8b7

Patch / mitigation: https://github.com/open-webui/open-webui/pull/27823

References

https://github.com/open-webui/open-webui/commit/e3e4bd87df6fc629e7e22081d980d55a7632b8b7 security-advisories@github.com
https://github.com/open-webui/open-webui/pull/27823 security-advisories@github.com
https://github.com/open-webui/open-webui/releases/tag/v0.11.1 security-advisories@github.com
https://github.com/open-webui/open-webui/security/advisories/GHSA-5x7x-4c3c-qf5w security-advisories@github.com
https://github.com/open-webui/open-webui/security/advisories/GHSA-5x7x-4c3c-qf5w 134c704f-9b21-4f2e-91b3-4a467353bcc0

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:52 UTC · record ↗

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CVE-2026-88001

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Weakness classification (CWE)

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References

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