CVE-2026-70479 json
Open WebUI: SSRF into internal services via unvalidated sub-resource requests in the Playwright web loader
published 2026-08-04 3 mo ago modified 2026-09-18 52 d ago also EUVD-2026-52915 , GHSA-w2rx-84hp-gg95 , PYSEC-2026-3653
- cvss
- 7.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, with WEB_LOADER_ENGINE=playwright, the Playwright web loader validates only the top-level page request and lets sub-resource requests pass unvalidated. A page supplied by an authenticated user can use JavaScript to reach blocked internal addresses, and returned DOM can include data read from those addresses in web-search or RAG output. This issue is fixed in 0.11.0.
Patch / fix
- pypi open-webui 0.11.0
- openwebui open_webui 0.11.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/open-webui/open-webui/security/advisories/GHSA-w2rx-84hp-gg95 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| GitHub | 3.1 | 7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| OSV | 3.1 | 7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | open-webui | >=0.9.6, <0.11.0 |
0.11.0 |
Affected products
- open-webui open-webui
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/open-webui/open-webui/pull/27526
web, patch, vendor-advisory
-
github.com
/open-webui/open-webui/commit/bef63a2ae915571d50d2722a635e8bfa753d7877
web, patch
-
github.com
/open-webui/open-webui/security/advisories/GHSA-w2rx-84hp-gg95
exploit, web, vendor-advisory
-
github.com
/open-webui/open-webui/releases/tag/v0.11.0
web, release-notes
-
github.com
/open-webui/open-webui
package
-
pypi.org
/project/open-webui
package
-
github.com
/advisories/GHSA-w2rx-84hp-gg95
advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-70479
advisory
Sources
- CVE List CVE-2026-70479
- GitHub Advisory GHSA-w2rx-84hp-gg95
- NVD CVE-2026-70479
- OSV PYSEC-2026-3653
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.