Security readout for executives and security teams
Plain-English summary
CVE-2026-22688 is a critical command injection flaw in Tencent WeKnora before 0.2.5. An authenticated user can make the server run unintended subprocesses through MCP stdio settings. For organizations using WeKnora, this creates high risk to confidentiality, integrity, and availability. The vendor advisory states version 0.2.5 patches the issue.
Executive priority
Treat as urgent if WeKnora is deployed. The vulnerability is critical, requires only authenticated access, and affects core server execution behavior. Prioritize upgrading to 0.2.5 and reviewing access controls for users who can change MCP stdio settings.
Technical view
WeKnora versions earlier than 0.2.5 allow authenticated users to inject values into stdio_config.command/args in MCP stdio settings. The server then executes subprocesses using those injected values. The CVE is mapped to CWE-77 and has CVSS 10.0, AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Likely exposure
Exposure is limited to deployments running Tencent WeKnora before 0.2.5 where authenticated users can access or influence MCP stdio configuration. Internet exposure is not stated in the sources, but the CVSS vector indicates network-reachable exploitation with low privileges and no user interaction.
Exploitation context
The provided sources do not state active exploitation, and the CVE is not listed as KEV in the bundle. Risk remains severe because successful exploitation could execute server-side subprocesses with broad confidentiality, integrity, and availability impact.
Researcher notes
Evidence comes from the CVE record, GitHub Security Advisory, and referenced patch commit. The sources identify the vulnerable input area and fixed version but do not provide public evidence of exploitation in the bundle. Avoid assuming exposure beyond WeKnora versions before 0.2.5.
Mitigation direction
- Upgrade Tencent WeKnora to version 0.2.5 or later.
- Review the GitHub advisory for vendor guidance and any operational notes.
- Restrict access to WeKnora administration and MCP configuration functions.
- Audit authenticated users allowed to modify MCP stdio settings.
- Monitor server activity for unexpected subprocess execution around WeKnora services.
Validation and detection
- Inventory WeKnora deployments and confirm installed versions.
- Flag any WeKnora version earlier than 0.2.5 as vulnerable.
- Verify upgrade completion by checking application version after deployment.
- Review configuration access controls for MCP stdio settings.
- Check logs for suspicious subprocess activity initiated by WeKnora.
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-77: 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-2026-22688 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
- 10 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H3.16Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/Tencent/WeKnora/security/advisories/GHSA-78h3-63c4-5fqcCVE reference · x_refsource_CONFIRM
- https://github.com/Tencent/WeKnora/commit/f7900a5e9a18c99d25cec9589ead9e4e59ce04bbCVE reference · x_refsource_MISC
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 a Command ('Command Injection')
Improper Neutralization of Special Elements used in a Command ('Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.