GHSA-w2rx-84hp-gg95 is a high-severity (CVSS 7.7) Server-Side Request Forgery (SSRF) vulnerability in open-webui. A fix is available for open-webui — see the affected versions and patch details below.
Open WebUI: SSRF into internal services via unvalidated sub-resource requests in the Playwright web loader
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
Exploitation and automatability from CISA’s SSVC triage for GHSA-w2rx-84hp-gg95.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-w2rx-84hp-gg95 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 376,715 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
open-webuiReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
Summary
With the Playwright web loader enabled, Open WebUI opens user-submitted URLs in a real browser and validates the destination address before allowing the request. That check only ran for the top-level page request. Every other request the page issued was passed through unvalidated, so a page could use its own JavaScript to reach addresses the validation exists to block. Because the loader returns the page's final DOM to the requesting user, anything the page read back from those addresses ends up in the web-search or RAG output.
Preconditions
WEB_LOADER_ENGINE=playwright. This is not the default; deployments on the default web loader are unaffected.- A reachable Playwright browser, either local or via
PLAYWRIGHT_WS_URL. - Any authenticated user who can submit a URL for ingestion or trigger a web search. No administrator role is required.
- Something worth reading on a network the browser can reach. A deployment whose browser container has no route to internal services loses nothing here.
Impact
An authenticated user can read HTTP responses from services reachable by the browser process: cloud instance metadata, other containers on the same network, and internal APIs bound to private addresses. The content is returned to the user through the normal web-search or document-ingestion result, so this is a read primitive, not a blind one. It confers no write access and no availability impact, and it does not extend beyond what the browser's network position already allows.
Fix
Fixed in 0.11.0 by commit bef63a2ae. Every intercepted request is now validated, fetched with redirects disabled, re-validated on each redirect hop and then fulfilled, so neither a sub-resource nor a redirect can land on a non-global address. The same change blocks the two paths that never reached the interceptor at all: service-worker requests, via service_workers="block", and WebSocket connections, via a route handler that never connects upstream. Upgrading to 0.11.0 fully resolves the issue; no configuration change is required.
Root cause
Affected component: SafePlaywrightURLLoader in backend/open_webui/retrieval/web/utils.py, in both the sync and async request interceptors. Affected setup: only builds running the Playwright loader engine.
The interceptor was written to guard navigation, and its first action was to return early for any request whose resource type was not document. The intent was that only the page the user asked for needs address validation, but a browser page is not a single request: once the validated document loads, its scripts issue further requests under the page's own control, and those never reached the validation. The address check was therefore applied to the one request the attacker did not need to control, and skipped on every request they did.
Proof of concept
Reported against 0.10.2 by driving the interceptor directly with stand-in route and request objects, one call per resource type, against http://169.254.169.254/latest/meta-data/. The document type is aborted; every other type is continued unvalidated. The browser and the network request were seeded rather than driven end to end; the code path exercised is the one the browser reaches for each sub-resource.
Credits
- @edwardav970 — identified that address validation was applied only to the top-level document request, leaving every sub-resource type unvalidated.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | open-webui | ≥ 0.9.6&&< 0.11.0 | 0.11.0pip install --upgrade 'open-webui==0.11.0' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for open-webui, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update open-webui to 0.11.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-w2rx-84hp-gg95 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-w2rx-84hp-gg95 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-w2rx-84hp-gg95. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-w2rx-84hp-gg95 in your dependencies?
O3 Security finds GHSA-w2rx-84hp-gg95 across PyPI dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.