Quick answers
- Is CVE-2022-40440 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2022-40440 being exploited in the wild.
- How severe is CVE-2022-40440?
- Low severity, with a CVSS score of 3.1, published 12 October 2022.
- Which products and versions are affected?
- mxgraph (npm) SEMVER:introduced=0,last_affected=4.2.2.
- Is there a fix for CVE-2022-40440?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2022-40440 attacked?
- It is attacked over the network.
- Am I affected by CVE-2022-40440?
- Check whether you run mxgraph (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a stored cross-site scripting (XSS) flaw in mxGraph's setTooltips() function that fails to properly sanitize user-supplied content before rendering it via innerHTML. When the setTooltips feature is enabled, the mxTooltipHandler uses innerHTML to display custom cell values without sanitization, allowing attackers to inject arbitrary HTML/JavaScript. The attack requires no authentication and is triggered through user interaction (hovering over a diagram element). An attacker can inject malicious code into cell values (e.g., <iframe src=javascript:alert(1)>) that executes in the victim's browser when tooltips are displayed. The vulnerability affects mxGraph version 4.2.2 and likely all earlier versions; patch status is unclear from available sources.
Affected products
- jgraph mxGraph through 4.2.2
Identifiers
- CVE-2022-40440
- GHSA-j4rv-pr9g-q8jv
Timeline
- 2022-10-12: disclosed