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Contrast Mesh CA Key Cross-Manifest Exposure via Peer Recovery

Priority LOW 36CWE-345Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-345.

Summary

Contrast from 1.8.0 before 1.24.1 is affected. Its Coordinator peer recovery fails to confirm that the serving peer uses the same manifest generation, which is an improper verification flaw (CWE-345). An attacker with high privileges and write access to manifest history can replay a superseded history head so withdrawn workloads obtain trusted mesh certificates, or with the secret seed can disclose the Mesh CA key.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

Contrast 1.8.0 before 1.24.1 contains an improper verification vulnerability in Coordinator peer recovery that fails to confirm the serving peer uses the same manifest generation. Attackers with write access to manifest history can replay a superseded history head so withdrawn workloads obtain trusted mesh certificates, or with the secret seed disclose the Mesh CA key.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0011 1st percentileScored 2026-11-07
Fix Fixed contrast (edgelesssys): 1.24.1

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
edgelesssyscontrast1.8.0 to before 1.24.11.24.1Patch availableCNA
  • contrast Vendoredgelesssys Affected 1.8.0 to before 1.24.1 Fixed in 1.24.1 Patch available CNA

Remediation

Upgrade Contrast to version 1.24.1, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA contrast (edgelesssys) Fixed in 1.24.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    edgelesssys contrast 1.24.1

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-71174 Contrast world-writable containerd config allows privilege escalationPriority LOW 38

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-109359
  2. 2026-10-12 Alias added: GHSA-mr8p-7h3w-x7jp
  3. 2026-10-13 Priority changed: MEDIUM → LOW
  4. 2026-10-13 CISA SSVC decision points changed
  5. 2026-11-06 Affected versions changed · Red Hat
  6. 2026-11-06 CVSS score added · Red Hat

References

  • TI-2026-64974 Edgeless Systems Contrast through 1.20.0 Denial of Service via ciphertextContainer CVSS 4.0MEDIUM 5.3
  • TI-2026-64973 Contrast before 1.16.0 Remote Attestation Relay Attack CVSS 4.0CRITICAL 9.1
  • TI-2026-64976 Contrast before 1.19.1 CopyFile Policy Symlink Subversion CVSS 4.0HIGH 8.6
  • TI-2026-64971 Contrast before 1.23.1 Image Substitution via Policy Generation CVSS 4.0HIGH 8.6
  • TI-2026-71174 Contrast world-writable containerd config allows privilege escalation CVSS 4.0HIGH 8.5
  • TI-2025-43536 Contrast before 1.8.1 Information Disclosure via Logging CVSS 4.0HIGH 8.5
See all 14 →

Sources