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01 Record

CVE-2026-107575

Inefficient Algorithmic Complexity in hMailServer

MediumPUBLISHEDCNA: GitLab
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

02 Description

Inefficient Algorithmic Complexity in hMailServer

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.38% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 32.5% of scored records. A rank, not a probability.
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD analysis status
Deferred. NVD last modified this record on 2026-10-08.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-10-08 11:46Z21 DAYS AGO
Last updated
2026-10-08 14:17Z21 DAYS AGO
Reserved
2026-10-08
Assigning CNA
GitLab
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
  • CWE-407Inefficient Algorithmic ComplexityClass
Data version
5.2
Document digest
4cc1f14c71330c79ad14daa89d167308c8ebc32a471d1b13355ae22fb40d1d2e

05 Affected products

VendorProductVersionsPlatforms
Progressive Robot LtdhMailServer6.3.4 to < 6.3.6—

06 References

07 Remediation

Upgrade to hMailServer 6.3.6, which finds where the name becomes short enough and cuts it once. Until then, turn SPF checking off, or accept the bounded delay.