CVE-2026-56446: MISP allowed a site administrator to configure an arbitrary filesystem path for the NDJSON error log used by J

Q: How do I fix CVE-2026-56446?

misp: upgrade to 2.5.42. Exact commands for each OS are on this page.

Q: Is CVE-2026-56446 being exploited?

CVE-2026-56446 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-56446 affect?

CVE-2026-56446 affects misp. Severity is high (CVSS 7.2). 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 privile

Routine

HIGH 7.2UPGRADE

CVE-2026-56446 is a high-severity flaw (CVSS 7.2) affecting misp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 s

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-94
Published	2026-06-22
Last modified	2026-06-23

Publisher (CNA): CIRCL · Vendor: misp-project

Last updated 2026-06-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-22 14:17 UTCPublished CVE record published
2026-06-23 16:17 UTCUpdated Record last modified

misp-project misp UPGRADE

Affected: < 2.5.42

Fixed in: 2.5.42

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy misp || rpm -q misp || misp --version

2. UPGRADE to 2.5.42 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade misp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade misp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2026-56446?

misp: upgrade to 2.5.42. Exact commands for each OS are on this page.

Is CVE-2026-56446 being exploited?

CVE-2026-56446 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-2026-56446 affect?

CVE-2026-56446 affects misp. Severity is high (CVSS 7.2). 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 privile

How urgent is CVE-2026-56446?

Priority 38/100. High severity

Software pages

PHP vulnerabilities

Related CVEs

CVE-2026-85239 MEDIUM 6.5 UPGRADE A vulnerability in MISP's event template handling allowed an authenticated user with permission to create or m
CVE-2026-85238 MEDIUM 6.8 UPGRADE MISP contains a session fixation vulnerability in the CustomAuth authentication (a custom configuration) flow
CVE-2026-85237 HIGH 8.1 UPGRADE A vulnerability in MISP's email-based one-time password (OTP) authentication flow allowed an attacker to perfo
CVE-2026-85236 HIGH 8.8 UPGRADE A cross-site request forgery (CSRF) vulnerability existed in the cullEmptyEvents action of MISP
CVE-2026-85216 CRITICAL 9.8 UPGRADE MISP contains an authentication bypass vulnerability in its LDAP and LinOTP authentication components due to i

References

← Back to latest CVEs