CVE-2026-70493

Katalog CVE

CVSS 6.5 · Medium EPSS 0,59%

Kerentanan Inefficient Regular Expression Complexity pada openwebui open webui. Skor CVSS 3.1 6.5 (Medium) menurut github.com.

Deskripsi (NVD)

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the built-in knowledge search path in backend/open_webui/tools/knowledge_fs.py and backend/open_webui/tools/builtin.py let a chat participant choose a pattern used to grep knowledge files. Patterns containing regex metacharacters were compiled with Python's backtracking re engine and run against every line of every reachable file with no time limit, so a crafted pattern such as (x|x)*y and one matching uploaded file line can pin one CPU core and block the event loop. This causes availability impact for every other user of the affected worker. This issue is fixed in 0.11.0.

Rincian

Terbit di NVD

4 Agustus 2026

Terakhir diubah

18 September 2026

Status NVD

Analyzed

CVSS 3.1

6.5 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-1333: Inefficient Regular Expression Complexity

EPSS (30 hari)

0,59% peluang dieksploitasi; lebih tinggi dari 46,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/open-webui/open-webui/pull/27471 patch · advisory vendor
• https://github.com/open-webui/open-webui/security/advisories/GHSA-2f54-p244-32q6 exploit · patch · advisory vendor
• https://github.com/open-webui/open-webui/commit/3ab2026262ef6f09810e4d235c5f9a9cb903e595 patch
• https://github.com/open-webui/open-webui/releases/tag/v0.11.0 release notes