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TI-2026-78884 Aliases CVE-2026-114477GHSA-p5f5-vqm2-vhg9

Missing authorization in hMailServer exposes server traffic history

Priority LOW 19CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

Progressive Robot hMailServer from 6.2.25 through 6.3.6 has a missing authorization check (CWE-862) in its REST metrics route. A remote authenticated user whose credential is limited to named domains can read the server-wide traffic counters for the last 30 days. The exposed data is aggregate operational counters, not messages or accounts.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Missing authorization in the REST metrics route of Progressive Robot hMailServer 6.2.25 through 6.3.6 allows a remote authenticated user whose credential is confined to named domains to read the server-wide traffic history. GET /api/v1/metrics/history returns the server's traffic counters over the last 30 days; those counters are server-wide and carry no domain, which is why the report routes already refuse the same counters to a credential confined to named domains. The metrics route was not among the routes the server's authorization gate refuses a confined credential and its handler was not given the caller, so a domain administrator, an account given another role that holds view_configuration in named domains (the auditor role given a domain list among them), or an API key issued for named domains could read the whole server's traffic totals rather than its own domains'. The disclosure is of aggregate operational counters, not of any message or account.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00214 11th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Progressive Robot LtdhMailServer6.2.25 – 6.3.6—No fix listedCNA

Remediation

The sources list no fixed version for hMailServer.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-114477
  2. 2026-10-21 Alias added: GHSA-p5f5-vqm2-vhg9
  3. 2026-10-29 CISA SSVC decision points changed

References

Other 2

  • TI-2026-64884 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') in hMailServer CVSS 3.1CRITICAL 9.8
  • TI-2026-76418 Unchecked loop limit in hMailServer lets remote attackers stop mail CVSS 3.1HIGH 7.5
  • TI-2026-69567 Inefficient processing in hMailServer stalls mail delivery CVSS 3.1HIGH 7.5
  • TI-2026-69565 Infinite loop in hMailServer MIME handling lets attackers stop mail CVSS 3.1HIGH 7.5
  • TI-2026-69564 Inefficient DKIM and ARC checks in hMailServer cause denial of service CVSS 3.1HIGH 7.5
  • TI-2026-69562 Inefficient JSON parsing in hMailServer lets attackers halt mail CVSS 3.1HIGH 7.5
See all 41 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences