CVE-2026-27167 Details
Gradio is an open-source Python package designed for quick prototyping. Starting in version 4.16.0 and prior to version 6.6.0, Gradio applications running outside of Hugging Face Spaces automatically enable "mocked" OAuth routes when OAuth components (e.g. `gr.LoginButton`) are used. When a user visits `/login/huggingface`, the server retrieves its own Hugging Face access token via `huggingface_hub.get_token()` and stores it in the visitor's session cookie. If the application is network-accessible, any remote attacker can trigger this flow to steal the server owner's HF token. The session cookie is signed with a hardcoded secret derived from the string `"-v4"`, making the payload trivially decodable. Version 6.6.0 fixes the issue.
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Exploit prediction scoring system (EPSS) score for CVE-2026-27167
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.45 Probability of exploitation activity being observed over the next 30 days (36th percentile)
CVSS score for CVE-2026-27167
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
0 Not available
Products affected by CVE-2026-27167
Gradio 4.22.0
Gradio 4.26.0
Gradio 4.29.0
Gradio 4.31.5
Gradio 4.35.0
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-27167 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
CN 391 33.74%
US 282 24.33%
DE 101 8.71%
SG 40 3.45%
KR 35 3.02%
RU 28 2.42%
HK 27 2.33%
GB 27 2.33%
JP 22 1.90%
FR 21 1.81%

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CVE-2026-27167 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 739 84.94%
Telecommunications 94 10.80%
Education 27 3.10%
Retail 6 0.69%
Business Services 2 0.23%
Government/Politics 1 0.11%
Real Estate 1 0.11%

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