How severe is CVE-2026-56304?

CVE-2026-56304 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2026-56304 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-56304?

CVE-2026-56304 affects Mmaitre314 Picklescan. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-56304?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-56304 have an EU (EUVD) identifier?

Yes. CVE-2026-56304 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38123.

When was CVE-2026-56304 published?

CVE-2026-56304 was published on 2026-06-20 and last updated on 2026-06-24.

CVE-2026-56304

CVE-2026-56304 is a medium-severity vulnerability in Mmaitre314 Picklescan with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 6.9
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38123
Weakness: CWE-502
Affected product: Mmaitre314 Picklescan
Published: 2026-06-20
Last modified: 2026-06-24

Description

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.

Frequently asked questions

What is CVE-2026-56304?: 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.
How severe is CVE-2026-56304?: CVE-2026-56304 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2026-56304 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-56304?: CVE-2026-56304 affects Mmaitre314 Picklescan. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-56304?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-56304 have an EU (EUVD) identifier?: Yes. CVE-2026-56304 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38123.
When was CVE-2026-56304 published?: CVE-2026-56304 was published on 2026-06-20 and last updated on 2026-06-24.

References

Affected products (1)

cpe:2.3:a:mmaitre314:picklescan:*:*:*:*:*:*:*:*

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