PatchTheCVECVE-2026-56304: picklescan before 1.0.1 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attac
CVE-2026-56304 is a medium-severity flaw (CVSS 6.5) affecting picklescan. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
picklescan before 1.0.1 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attackers to create arbitrary zero-byte files via logging.FileHandler class instantiation. Attackers can exploit this by crafting malicious pickle payloads to bypass RCE blocklists and create lock files or other filesystem artifacts, potentially causing denial of service or application disruption.
Why this priority
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 62%) |
| CISA exploited list | No |
| Weakness | CWE-502 |
| Published | 2026-06-20 |
| Last modified | 2026-06-24 |
Last updated 2026-06-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-56304?
picklescan: upgrade to 1.0.1. Exact commands for each OS are on this page.
Is CVE-2026-56304 being exploited?
CVE-2026-56304 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-56304 affect?
CVE-2026-56304 affects picklescan. Severity is medium (CVSS 6.5). picklescan before 1.0.1 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attackers to create arbitrary zero-byte files via logging.FileHandler class instantiation. Attackers can exploit this by crafting malic
How urgent is CVE-2026-56304?
Priority 42/100. Public exploit reference; Remotely exploitable, no login, no user action
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