Security readout for executives and security teams
Plain-English summary
CVE-2026-0756 is a critical remote code execution issue in github-kanban-mcp-server 0.3.0. An unauthenticated attacker could run code on the server through improper handling of a create_issue input. Business risk is high if the service is reachable by untrusted networks.
Executive priority
Prioritize immediately for any reachable deployment. The vulnerability allows unauthenticated remote code execution and could lead to server compromise, data theft, or operational disruption. If the product is not deployed, record non-exposure and monitor for updates.
Technical view
The flaw is CWE-78 command injection in github-kanban-mcp-server’s handling of the create_issue parameter. User-supplied input is not properly validated before being used in a system call, allowing code execution as the service account. CVSS is 9.8, network exploitable, no privileges or user interaction required.
Likely exposure
Known affected product evidence is limited to github-kanban-mcp-server version 0.3.0. Exposure is greatest for internet-facing or broadly reachable deployments, especially where the service account has access to repositories, tokens, files, or internal systems.
Exploitation context
The CVE and ZDI advisory describe unauthenticated remote code execution. The source bundle does not indicate CISA KEV listing or confirmed active exploitation. Treat reachable deployments as urgent because exploitation requires network access and no authentication.
Researcher notes
Evidence identifies version 0.3.0 and ZDI-CAN-27784/ZDI-26-022. No fixed version, patch link, or official workaround is provided in the supplied sources. Do not assume other versions are affected without vendor confirmation.
Mitigation direction
- Identify whether github-kanban-mcp-server 0.3.0 is deployed.
- Check vendor or project guidance for a fixed version or official mitigation.
- Restrict network access to trusted systems only.
- Disable affected exposed instances if business impact allows.
- Reduce service account privileges and rotate exposed credentials if compromise is suspected.
Validation and detection
- Confirm deployed github-kanban-mcp-server versions and package sources.
- Map whether instances are reachable from the internet or untrusted networks.
- Review service account permissions and accessible secrets.
- Check logs for unusual issue-creation activity or unexpected process execution.
- Track ZDI and CVE records for remediation updates.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-0756 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
9.8CriticalVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ZDI-26-022CVE reference · x_research-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.