Every CVE Search/ Get API key

CVE-2021-43831

Files on the host computer can be accessed from the Gradio interface

7.7 HighFix available

Gradio is an open source framework for building interactive machine learning models and demos. In versions prior to 2.5.0 there is a vulnerability that affects anyone who creates and publicly shares Gradio interfaces. File paths are not restricted and users who receive a Gradio link can access any files on the host computer if they know the file names or file paths. This is limited only by the host operating system. Paths are opened in read only mode. The problem has been patched in gradio 2.5.0.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

3.85%Up 3.2 points since Dec 16, 2021
90%50%10%1%

What each source reports

CVE List Score used 7.7

Files on the host computer can be accessed from the Gradio interface

Gradio is an open source framework for building interactive machine learning models and demos. In versions prior to 2.5.0 there is a vulnerability that affects anyone who creates and publicly shares Gradio interfaces. File paths are not restricted and users who receive a Gradio link can access any files on the host computer if they know the file names or file paths. This is limited only by the host operating system. Paths are opened in read only mode. The problem has been patched in gradio 2.5.0.

Record
CVE-2021-43831
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
EUVDEUVD-2021-0095 7.7

Gradio is an open source framework for building interactive machine learning models and demos. In versions prior to 2.5.0 there is a vulnerability that affects anyone who creates and publicly shares Gradio interfaces. File paths are not restricted and users who receive a Gradio link can access any files on the host computer if they know the file names or file paths. This is limited only by the host operating system. Paths are opened in read only mode. The problem has been patched in gradio 2.5.0.

Record
EUVD-2021-0095
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-rhq2-3vr9-6mcr 9.3

Files on the host computer can be accessed from the Gradio interface

Impact

This is a vulnerability that affects anyone who creates and publicly shares Gradio interfaces using gradio<2.4.8. Because of the way that static files were being served, someone who generated a public Gradio link and shared it with others would potentially be exposing the files on the computer that generated the link, while the link was active. An attacker would be able to view the contents of a file on the computer if they knew the exact relative filepath. We do not have any evidence that this was ever exploited, but we treated the issue seriously and immediately took steps to mitigate it (see below)

Response

  1. We worked with @haby0 to immediately patch the issue and released a new version, gradio 2.5.0, within 24 hours of the issue being brought to our attention
  2. We enabled a notification that is printed to anyone using an older version of gradio telling them to upgrade (see screenshot below)
  3. We expanded our test suite to test for this vulnerability ensuring that our patch does not get reverted in future releases of gradio

Patches

The problem has been patched in gradio>=2.5.0.

Record
GHSA-rhq2-3vr9-6mcr
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
8.3 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Weakness
CWE-22
Updated
2026-11-02
NVD 7.7

Gradio is an open source framework for building interactive machine learning models and demos. In versions prior to 2.5.0 there is a vulnerability that affects anyone who creates and publicly shares Gradio interfaces. File paths are not restricted and users who receive a Gradio link can access any files on the host computer if they know the file names or file paths. This is limited only by the host operating system. Paths are opened in read only mode. The problem has been patched in gradio 2.5.0.

Record
CVE-2021-43831
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS 2.0
3.5 LowAV:N/AC:M/Au:S/C:P/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
OSV 7.7

Gradio is an open source framework for building interactive machine learning models and demos. In versions prior to 2.5.0 there is a vulnerability that affects anyone who creates and publicly shares Gradio interfaces. File paths are not restricted and users who receive a Gradio link can access any files on the host computer if they know the file names or file paths. This is limited only by the host operating system. Paths are opened in read only mode. The problem has been patched in gradio 2.5.0.

Record
CVE-2021-43831
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Updated
2026-11-02
OSVGHSA-rhq2-3vr9-6mcr 9.3

Files on the host computer can be accessed from the Gradio interface

Impact

This is a vulnerability that affects anyone who creates and publicly shares Gradio interfaces using gradio<2.4.8. Because of the way that static files were being served, someone who generated a public Gradio link and shared it with others would potentially be exposing the files on the computer that generated the link, while the link was active. An attacker would be able to view the contents of a file on the computer if they knew the exact relative filepath. We do not have any evidence that this was ever exploited, but we treated the issue seriously and immediately took steps to mitigate it (see below)

Response

  1. We worked with @haby0 to immediately patch the issue and released a new version, gradio 2.5.0, within 24 hours of the issue being brought to our attention
  2. We enabled a notification that is printed to anyone using an older version of gradio telling them to upgrade (see screenshot below)
  3. We expanded our test suite to test for this vulnerability ensuring that our patch does not get reverted in future releases of gradio

Patches

The problem has been patched in gradio>=2.5.0.

Record
GHSA-rhq2-3vr9-6mcr
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
8.3 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Weakness
CWE-22
Updated
2026-11-02
OSVPYSEC-2021-873 No score

Gradio is an open source framework for building interactive machine learning models and demos. In versions prior to 2.5.0 there is a vulnerability that affects anyone who creates and publicly shares Gradio interfaces. File paths are not restricted and users who receive a Gradio link can access any files on the host computer if they know the file names or file paths. This is limited only by the host operating system. Paths are opened in read only mode. The problem has been patched in gradio 2.5.0.

Record
PYSEC-2021-873
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gradio
PyPI
before 2.5.0
2.5.0
gradio
PyPI
before 2.5.0, plus listed versions
0.1.00.1.10.1.20.1.30.1.4
Show 45 moreShow less
0.1.50.1.60.1.70.1.80.1.90.2.00.2.10.3.00.3.10.3.20.3.30.3.40.3.50.4.00.4.10.4.20.4.40.5.00.7.00.7.10.7.20.7.30.7.40.7.50.7.60.7.70.7.80.8.00.8.10.9.00.9.10.9.20.9.30.9.40.9.50.9.60.9.70.9.80.9.9.20.9.9.30.9.9.50.9.9.60.9.9.70.9.9.80.9.9.9
2.5.0

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
NucleiGradio < 2.5.0 - Arbitrary File Read

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, Nuclei, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-43831 is a high vulnerability (CVSS 7.7) in Gradio-app Gradio, published December 15, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.85%, the 90th percentile. Fixed in gradio 2.5.0.

References

This page doesn't list everything

Left out here: 113 versions. The JSON record has them.

MoveEnter Open