Contrast Mesh CA Key Cross-Manifest Exposure via Peer Recovery
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 An attacker with high privileges and write access to manifest history can replay a superseded history head so withdrawn workloads obtain trusted mesh certificates, or with the secret seed can disclose the Mesh CA key.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 Attackers with write access to manifest history can replay a superseded history head so withdrawn workloads obtain trusted mesh certificates, or with the secret seed disclose the Mesh CA key.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
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| edgelesssys | contrast | 1.8.0 to before 1.24.1 | 1.24.1 | Patch available | CNA |
- 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
Timeline
- 2026-10-12 Threatist record created from CVE-2026-109359
- 2026-10-12 Alias added: GHSA-mr8p-7h3w-x7jp
- 2026-10-13 Priority changed: MEDIUM → LOW
- 2026-10-13 CISA SSVC decision points changed
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
More edgelesssys vulnerabilities
- 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
Sources
- CVE-2026-109359 · CVE Program
- CVE-2026-109359 · NVD
- FIRST EPSS
- GHSA-mr8p-7h3w-x7jp · GitHub Advisory Database · CC BY 4.0
- CVE-2026-109359 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences