How severe is CVE-2026-34443?

CVE-2026-34443 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-34443 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34443?

CVE-2026-34443 affects Freescout. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34443?

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

Does CVE-2026-34443 have an EU (EUVD) identifier?

Yes. CVE-2026-34443 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17674.

When was CVE-2026-34443 published?

CVE-2026-34443 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-34443

CVE-2026-34443 is a medium-severity vulnerability in Freescout with a CVSS 3.x base score of 5.3. 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-918.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 6.9
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17674
Weakness: CWE-918
Affected product: Freescout
Published: 2026-03-31
Last modified: 2026-06-17

Description

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.211, checkIpByMask() in app/Misc/Helper.php checks whether the input IP contains a / character. Plain IP addresses never contain /, so the function always returns false without checking any CIDR ranges. The entire 10.0.0.0/8 and 172.16.0.0/12 private ranges are unprotected. This issue has been patched in version 1.8.211.

Frequently asked questions

What is CVE-2026-34443?: FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.211, checkIpByMask() in app/Misc/Helper.php checks whether the input IP contains a / character. Plain IP addresses never contain /, so the function always returns false without checking any CIDR ranges. The entire 10.0.0.0/8 and 172.16.0.0/12 private ranges are unprotected. This issue has been patched in version 1.8.211.
How severe is CVE-2026-34443?: CVE-2026-34443 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-34443 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34443?: CVE-2026-34443 affects Freescout. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34443?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34443 have an EU (EUVD) identifier?: Yes. CVE-2026-34443 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17674.
When was CVE-2026-34443 published?: CVE-2026-34443 was published on 2026-03-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:freescout:freescout:*:*:*:*:*:*:*:*

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