Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N L N N N N L L 6.9 .0044 37.0 —
AFFECTED Product Versions Fixed picklescan unspecified 1.0.1
TIMELINE Jun 20 EXPLOIT PUBLISHED — CVE-2026-56304 (picklescan). Public exploit reference added. Jun 20 Reserved by VulnCheck Jun 20 Published (CNA: VulnCheck)
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.
| Date | Event | Detail |
|---|---|---|
| June 20, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-56304 (picklescan). Public exploit reference added. |
| June 20, 2026 | Reserved | Reserved by VulnCheck |
| June 20, 2026 | Published | Published (CNA: VulnCheck) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| picklescan | picklescan | — | — | 1.0.1 |
Authoritative record: CVE-2026-56304 at cve.org
Vendors: picklescan
Weaknesses: CWE-502
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-56304 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.