How severe is CVE-2026-1331?

CVE-2026-1331 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-1331 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1331?

CVE-2026-1331 affects Hamastar Meetinghub Paperless Meetings. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-1331?

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

Does CVE-2026-1331 have an EU (EUVD) identifier?

Yes. CVE-2026-1331 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4167.

When was CVE-2026-1331 published?

CVE-2026-1331 was published on 2026-01-22 and last updated on 2026-06-17.

CVE-2026-1331

CVE-2026-1331 is a critical-severity vulnerability in Hamastar Meetinghub Paperless Meetings with a CVSS 3.x base score of 9.8. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4167
Weakness: CWE-434
Affected product: Hamastar Meetinghub Paperless Meetings
Published: 2026-01-22
Last modified: 2026-06-17

Description

MeetingHub developed by HAMASTAR Technology has an Arbitrary File Upload vulnerability, allowing unauthenticated remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.

Frequently asked questions

What is CVE-2026-1331?: MeetingHub developed by HAMASTAR Technology has an Arbitrary File Upload vulnerability, allowing unauthenticated remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.
How severe is CVE-2026-1331?: CVE-2026-1331 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-1331 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1331?: CVE-2026-1331 affects Hamastar Meetinghub Paperless Meetings. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-1331?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-1331 have an EU (EUVD) identifier?: Yes. CVE-2026-1331 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4167.
When was CVE-2026-1331 published?: CVE-2026-1331 was published on 2026-01-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hamastar:meetinghub_paperless_meetings:*:*:*:*:*:*:*:*

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