How severe is CVE-2026-44363?

CVE-2026-44363 has a CVSS 4.0 base score of 5.8, rated medium severity.

Is CVE-2026-44363 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-44363?

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

Does CVE-2026-44363 have an EU (EUVD) identifier?

Yes. CVE-2026-44363 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30153.

When was CVE-2026-44363 published?

CVE-2026-44363 was published on 2026-05-13 and last updated on 2026-06-17.

CVE-2026-44363

CVE-2026-44363 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.8. 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-295.

Key facts

Severity: Medium (CVSS 4.0 base score 5.8)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30153
Weakness: CWE-295
Published: 2026-05-13
Last modified: 2026-06-17

Description

MISP modules are autonomous modules that can be used to extend MISP for new services. Prior to 3.0.7, an unsafe remote resource fetching vulnerability existed in MISP Modules expansion modules. The html_to_markdown module accepted arbitrary HTTP(S) URLs without sufficient validation, which could allow Server-Side Request Forgery against loopback, private, or link-local network resources. Additionally, the qrcode module disabled TLS certificate verification when retrieving remote images, exposing requests to potential man-in-the-middle interception or response tampering. The issue was fixed by validating URL schemes, blocking local and private address ranges, resolving hostnames before fetching, enforcing request timeouts, and re-enabling TLS certificate verification. This vulnerability is fixed in 3.0.7.

Frequently asked questions

What is CVE-2026-44363?: MISP modules are autonomous modules that can be used to extend MISP for new services. Prior to 3.0.7, an unsafe remote resource fetching vulnerability existed in MISP Modules expansion modules. The html_to_markdown module accepted arbitrary HTTP(S) URLs without sufficient validation, which could allow Server-Side Request Forgery against loopback, private, or link-local network resources. Additionally, the qrcode module disabled TLS certificate verification when retrieving remote images, exposing requests to potential man-in-the-middle interception or response tampering. The issue was fixed by validating URL schemes, blocking local and private address ranges, resolving hostnames before fetching, enforcing request timeouts, and re-enabling TLS certificate verification. This vulnerability is fixed in 3.0.7.
How severe is CVE-2026-44363?: CVE-2026-44363 has a CVSS 4.0 base score of 5.8, rated medium severity.
Is CVE-2026-44363 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-44363?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-44363 have an EU (EUVD) identifier?: Yes. CVE-2026-44363 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30153.
When was CVE-2026-44363 published?: CVE-2026-44363 was published on 2026-05-13 and last updated on 2026-06-17.

References

Other CWE-295 (Improper Certificate Validation) vulnerabilities

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