How severe is CVE-2026-56446?

CVE-2026-56446 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-56446 being actively exploited?

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

What products are affected by CVE-2026-56446?

CVE-2026-56446 affects Misp-project Misp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-56446?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-56446 have an EU (EUVD) identifier?

Yes. CVE-2026-56446 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38229.

When was CVE-2026-56446 published?

CVE-2026-56446 was published on 2026-06-22 and last updated on 2026-06-23.

CVE-2026-56446

CVE-2026-56446 is a high-severity vulnerability in Misp-project Misp with a CVSS 3.x base score of 7.2. 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-94.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v4: 8.7
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38229
Weakness: CWE-94
Affected product: Misp-project Misp
Published: 2026-06-22
Last modified: 2026-06-23

Description

MISP allowed a site administrator to configure an arbitrary filesystem path for the NDJSON error log used by JsonLogTool. Because log entries can include attacker-controlled content, an authenticated attacker with site administrator privileges could direct log output to a PHP file in a web-accessible directory and inject PHP code through logged data. Accessing the resulting file could lead to remote code execution with the privileges of the web server process. The fix restricts log destinations to existing directories beneath APP/tmp/logs or /var/log, requires absolute paths, rejects stream wrappers and traversal-related input, and limits filenames to .log or .ndjson extensions while disallowing executable extension segments.

Frequently asked questions

What is CVE-2026-56446?: MISP allowed a site administrator to configure an arbitrary filesystem path for the NDJSON error log used by JsonLogTool. Because log entries can include attacker-controlled content, an authenticated attacker with site administrator privileges could direct log output to a PHP file in a web-accessible directory and inject PHP code through logged data. Accessing the resulting file could lead to remote code execution with the privileges of the web server process. The fix restricts log destinations to existing directories beneath APP/tmp/logs or /var/log, requires absolute paths, rejects stream wrappers and traversal-related input, and limits filenames to .log or .ndjson extensions while disallowing executable extension segments.
How severe is CVE-2026-56446?: CVE-2026-56446 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-56446 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-56446?: CVE-2026-56446 affects Misp-project Misp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-56446?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-56446 have an EU (EUVD) identifier?: Yes. CVE-2026-56446 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38229.
When was CVE-2026-56446 published?: CVE-2026-56446 was published on 2026-06-22 and last updated on 2026-06-23.

References

https://github.com/MISP/MISP/commit/9600d486ccfc98388e13897fd954350cebac5fb0

Affected products (1)

cpe:2.3:a:misp-project:misp:*:*:*:*:*:*:*:*

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