GHSA-538v-3wq9-4h3r

Suggest an improvement
Source
https://github.com/advisories/GHSA-538v-3wq9-4h3r
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/10/GHSA-538v-3wq9-4h3r/GHSA-538v-3wq9-4h3r.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-538v-3wq9-4h3r
Aliases
Published
2025-10-01T12:30:27Z
Modified
2026-06-29T12:26:52Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Apache Pyfory python is vulnerable to deserialization of untrusted data
Details

Deserialization of untrusted data in python in pyfory versions 0.12.0 through 0.12.2, or the legacy pyfury versions from 0.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources. An attacker can craft a data stream that selects pickle-fallback serializer during deserialization, leading to the execution of pickle.loads, which is vulnerable to remote code execution.

Users are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue.

Database specific
{
    "cwe_ids":  [
        "CWE-502"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2025-10-01T19:38:16Z",
    "nvd_published_at":  "2025-10-01T10:15:34Z",
    "severity":  "CRITICAL"
}
References

Affected packages

PyPI / pyfory

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0.12.0
Fixed
0.12.3

Affected versions

0.*
0.12.0
0.12.1
0.12.2

Database specific

source
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/10/GHSA-538v-3wq9-4h3r/GHSA-538v-3wq9-4h3r.json"

PyPI / pyfury

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0.1.0
Last Affected
0.10.3

Affected versions

0.*
0.2.0a1
0.2.0
0.2.1a1
0.2.1
0.3.0a1
0.3.0a2
0.3.0a3
0.3.0
0.3.1
0.4.0
0.4.1
0.10.2rc1
0.10.2
0.10.3

Database specific

source
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/10/GHSA-538v-3wq9-4h3r/GHSA-538v-3wq9-4h3r.json"