Security readout for executives and security teams
Plain-English summary
Termix versions 1.7.0 through 1.9.x have a stored XSS flaw in File Manager SVG preview handling. If an attacker can place a malicious SVG on a managed SSH server and a Termix user previews it, code can run inside Termix. Reported impact includes local file inclusion in Electron and session hijacking in browser use.
Executive priority
Treat as high priority for Termix deployments because successful exploitation can expose files or hijack sessions. Urgency is highest where Termix is used to administer sensitive infrastructure.
Technical view
CVE-2026-22804 affects Termix File Manager, specifically SVG rendering in FileViewer.tsx. Unsanitized SVG content can execute JavaScript in the application context. The advisory rates it CVSS 8.0 high with network attack vector, high complexity, user interaction required, changed scope, and high confidentiality and integrity impact. Fixed version is 1.10.0.
Likely exposure
Organizations using Termix-SSH Termix versions >=1.7.0 and <1.10.0 are potentially exposed, especially where Termix manages SSH servers that less-trusted users or attackers may modify.
Exploitation context
Sources do not report active exploitation or KEV listing. Exploitation requires a malicious file planted on a managed SSH server and user interaction to preview it in Termix File Manager.
Researcher notes
Evidence is limited to the CVE record and GitHub advisory. No public source in the bundle confirms exploitation in the wild. The key dependency is attacker ability to plant content on a managed SSH server plus victim preview interaction.
Mitigation direction
- Upgrade Termix to version 1.10.0 or later.
- Prioritize instances managing sensitive servers or used in browser sessions.
- Avoid previewing untrusted SVG files in Termix until upgraded.
- Review the GitHub advisory for any updated vendor guidance.
Validation and detection
- Inventory deployed Termix versions across servers and workstations.
- Confirm no production instance runs versions 1.7.0 through 1.9.x.
- Validate upgraded instances report Termix 1.10.0 or later.
- Review recent File Manager SVG preview activity where logs are available.
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-269: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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 lookupCWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCVE-2026-22804 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
- High
- CVSS
- 8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
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:H/PR:N/UI:R/S:C/C:H/I:H/A:N1.65.8Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/Termix-SSH/Termix/security/advisories/GHSA-m3cv-5hgp-hv35CVE reference · x_refsource_CONFIRM
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 Privilege Management
Improper Privilege Management represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.