Staging Environment: Content and features may be unstable or change without notice.
Advisory details: pypa / gradio/PYSEC-2026-65
Advisory ID pypa/gradio/PYSEC-2026-65
Aliases CVE-2026-28415
GHSA-pfjf-5gxr-995x
PYSEC-2026-65
Summary Gradio is an open-source Python package designed for quick prototyping. Prior to version 6.6.0, the _redirect_to_target() function in Gradio's OAuth flow accepts an unvalidated _target_url query parameter, allowing redirection to arbitrary external URLs. This affects the /logout and /login/callback endpoints on Gradio apps with OAuth enabled (i.e. apps running on Hugging Face Spaces with gr.LoginButton). Starting in version 6.6.0, the _target_url parameter is sanitized to only use the path, query, and fragment, stripping any scheme or host.
Status Published
Exploitability 0.5
Weighted Severity 4.2
Risk 2.1
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv3.1 4.7 https://github.com/pypa/advisory-database/blob/main/vulns/gradio/PYSEC-2026-65.yaml
Reference id Reference type URL
GHSA-pfjf-5gxr-995x https://github.com/gradio-app/gradio/security/advisories/GHSA-pfjf-5gxr-995x
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N Found at https://github.com/pypa/advisory-database/blob/main/vulns/gradio/PYSEC-2026-65.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-02T21:55:30Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/28xxx/CVE-2026-28415.json

Source Advisory: vulnrichment/CVE-2026-28415

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'no'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]