cnvs.io Canvas 3.3.0 has XSS in the title and content fields of a "Posts > Add New"…
Priority LOW 25CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
cnvs.io Canvas 3.3.0 has XSS in the title and content fields of a "Posts > Add New" action, and during creation of new tags and users.
Why it matters now
EPSS 0.00615 49th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
| — | austintoddj/canvas (Packagist) | — | — | No fix listed | GHSA-3657-q433-mmpx |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- austintoddj/canvas (Packagist) Vendor— Affected — Fixed in — No fix listed GHSA-3657-q433-mmpx
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-8298
- 2026-10-03 Alias added: GHSA-3657-q433-mmpx
References
More Cnvs Canvas vulnerabilities
- TI-2017-14715 Canvs Canvas version 3.4.2 contains a Cross Site Scripting (XSS) vulnerability in User's… CVSS 3.0MEDIUM 5.4
Sources
- CVE-2017-8298 · CVE Program
- CVE-2017-8298 · NVD
- FIRST EPSS
- GHSA-3657-q433-mmpx · GitHub Advisory Database · CC BY 4.0
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