Critical severityNVD Advisory· Published Jun 17, 2026
picklescan - Universal Blocklist Bypass via pkgutil.resolve_name
CVE-2026-3490
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
picklescanPyPI | < 1.0.4 | 1.0.4 |
Affected products
1- Range: <1.0.4
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-vvpj-8cmc-gx39ghsaADVISORY
- github.com/mmaitre314/picklescan/security/advisories/GHSA-vvpj-8cmc-gx39ghsavendor-advisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-3490ghsaADVISORY
- www.vulncheck.com/advisories/picklescan-universal-blocklist-bypass-via-pkgutil-resolve-nameghsathird-party-advisoryWEB
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