easymon version 1.4 and earlier contains a Cross Site Scripting (XSS) vulnerability in…
Priority LOW 29CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
easymon version 1.4 and earlier contains a Cross Site Scripting (XSS) vulnerability in Endpoint where monitoring is mounted that can result in Reflected XSS that affects Firefox. Can be used to steal cookies, depending on the cookie settings.. This attack appear to be exploitable via The victim must click on a crafted URL that contains the XSS payload. This vulnerability appears to have been fixed in 1.4.1 and later.
Why it matters now
EPSS 0.00896 59th percentileScored 2026-11-07
Fix Fixed easymon (RubyGems): 1.4.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | easymon (RubyGems) | before 1.4.1 | 1.4.1 | Patch available | GHSA-c289-47qf-rvrr |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- easymon (RubyGems) Vendor— Affected before 1.4.1 Fixed in 1.4.1 Patch available GHSA-c289-47qf-rvrr
Remediation
- Fix · GHSA-c289-47qf-rvrr easymon (RubyGems) Fixed in 1.4.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2018-1000855
- 2026-10-03 Alias added: GHSA-c289-47qf-rvrr
References
Sources
- CVE-2018-1000855 · CVE Program
- CVE-2018-1000855 · NVD
- FIRST EPSS
- GHSA-c289-47qf-rvrr · GitHub Advisory Database · CC BY 4.0
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