CVE-2026-3490 Details
Description
picklescan before 1.0.4 fails to block pkgutil.resolve_name, allowing attackers to bypass the entire blocklist by resolving any dangerous function through indirect REDUCE calls. Remote attackers can invoke any blocked function such as os.system, builtins.exec, or subprocess.call to achieve remote code execution.
A vulnerability in Picklescan versions prior to 1.0.4 allows remote attackers to bypass the application's blocklist and execute arbitrary code. This is achieved by exploiting the 'pkgutil.resolve_name' function, which is not blocked by Picklescan's security measures. Attackers can use indirect REDUCE calls to access and invoke dangerous functions such as 'os.system', 'builtins.exec', or 'subprocess.call', leading to remote code execution.
Users are advised to update to Picklescan version 1.0.4 or later, and to add 'pkgutil' to the blocklist of unsafe globals.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 17, 2026CISA-ADP
Assessed Jun 18, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/mmaitre314/picklescan/security/advisories/GHSA-vvpj-8cmc-gx39 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/mmaitre314/picklescan/security/advisories/GHSA-vvpj-8cmc-gx39 | [email protected] | AdvisoryExploitRemedyVendor |
| https://www.vulncheck.com/advisories/picklescan-universal-blocklist-bypass-via-pkgutil-resolve-name | [email protected] | AdvisoryBundle |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-183 | Permissive List of Allowed Inputs | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mmaitre314 picklescan | < 1.0.4 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 18, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | New CVE Received | [email protected] |