How severe is CVE-2026-41237?

CVE-2026-41237 has a CVSS 4.0 base score of 8.6, rated high severity.

Is CVE-2026-41237 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-41237?

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-2026-41237 have an EU (EUVD) identifier?

Yes. CVE-2026-41237 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34316.

When was CVE-2026-41237 published?

CVE-2026-41237 was published on 2026-06-04 and last updated on 2026-06-17.

CVE-2026-41237

CVE-2026-41237 is a high-severity vulnerability with a CVSS 4.0 base score of 8.6. 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-74.

Key facts

Severity: High (CVSS 4.0 base score 8.6)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34316
Weakness: CWE-74
Published: 2026-06-04
Last modified: 2026-06-17

Description

Froxlor is open source server administration software. In version 2.3.6 and earlier, the LOC record regex uses `\s+` which matches newlines (allowing embedded newlines to pass), TLSA `matchingType=0` has no upper bound on hex data length, and all validators return raw input without zone-file escaping. Version 2.3.7 contains an updated patch.

Frequently asked questions

What is CVE-2026-41237?: Froxlor is open source server administration software. In version 2.3.6 and earlier, the LOC record regex uses `\s+` which matches newlines (allowing embedded newlines to pass), TLSA `matchingType=0` has no upper bound on hex data length, and all validators return raw input without zone-file escaping. Version 2.3.7 contains an updated patch.
How severe is CVE-2026-41237?: CVE-2026-41237 has a CVSS 4.0 base score of 8.6, rated high severity.
Is CVE-2026-41237 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-41237?: 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-2026-41237 have an EU (EUVD) identifier?: Yes. CVE-2026-41237 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34316.
When was CVE-2026-41237 published?: CVE-2026-41237 was published on 2026-06-04 and last updated on 2026-06-17.

References

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