GHSA-96ff-gc8g-wpvg — deepseek-tui
HIGHGHSA-96ff-gc8g-wpvg is a high-severity (CVSS 7.4) Server-Side Request Forgery (SSRF) vulnerability in deepseek-tui. A fix is available for deepseek-tui — see the affected versions and patch details below.
DeepSeek TUI has SSRF via HTTP Redirect Bypass in fetch_url Tool
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-96ff-gc8g-wpvg.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
GHSA-96ff-gc8g-wpvg by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 379,842 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.
deepseek-tuicrates.ioDescription
Summary
The fetch_url tool validates the initial URL's resolved IP address against a restricted-IP blocklist (is_restricted_ip()) to prevent SSRF attacks against internal services (cloud metadata endpoints, localhost, private networks). However, the HTTP client (reqwest) is configured to automatically follow up to 5 redirects (reqwest::redirect::Policy::limited(5)) without re-validating the redirect target against the same SSRF protections.
PoC
Step 1 — Baseline: Confirm fetch_url blocks direct requests to restricted IPs.
Prompt: use fetch_url to fetch http://169.254.169.254/latest/meta-data/
Expected: Error — "restricted address (private/loopback/link-local)"
Step 2 — SSRF bypass via redirect: Fetch a public URL that redirects to the restricted IP.
Prompt: use fetch_url to fetch http://httpbin.org/redirect-to?url=http://169.254.169.254/latest/meta-data/&status_code=302
Expected result: The error message says "connection refused" or "request failed: connect error" — NOT "restricted address." This proves the SSRF filter was bypassed; the connection failed only because 169.254.169.254 is unreachable from a non-cloud machine.
Observed result: fetch_url followed the 302 redirect and attempted to connect to 169.254.169.254. The error was a TCP-level connection failure, confirming the application-layer SSRF check was not applied to the redirect target.
Step 3 — Redirect to attacker-controlled host: Confirm attacker-controlled redirect targets are followed.
Prompt: use fetch_url to fetch http://httpbin.org/redirect-to?url=http://[collaborator-domain]/ssrf-redirect-bypass&status_code=302
Expected: Collaborator receives HTTP callback at /ssrf-redirect-bypass, confirming the redirect was followed.
Impact
On cloud-hosted instances (AWS, GCP, Azure), an attacker can exfiltrate cloud IAM credentials, instance metadata, and other sensitive internal service data by redirecting fetch_url to http://169.254.169.254/latest/meta-data/. The attack is triggered via prompt injection (malicious instructions embedded in files or web content the model processes) that cause the model to call fetch_url with an attacker-controlled URL.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | deepseek-tui | all versions | 0.8.22cargo update -p deepseek-tui --precise 0.8.22 |
| 🦀crates.io | deepseek-tui-cli | all versions | 0.8.22cargo update -p deepseek-tui-cli --precise 0.8.22 |
| 📦npm | deepseek-tui | all versions | 0.8.22npm install deepseek-tui@0.8.22 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for deepseek-tui, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update deepseek-tui to 0.8.22 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-96ff-gc8g-wpvg is resolved across your whole dependency graph.
Workarounds
Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.
Frequently Asked Questions
Is GHSA-96ff-gc8g-wpvg in your dependencies?
Find it across crates.io, npm, including transitive dependencies.