CheckSec Canopy before 3.5.2 allows XSS attacks against the login page via the LOGIN_PAGE_DISCLAIMER parameter.
Priority LOW 24CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- 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 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
CheckSec Canopy before 3.5.2 allows XSS attacks against the login page via the LOGIN_PAGE_DISCLAIMER parameter.
Why it matters now
EPSS 0.00836 57th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-34815
- 2026-10-03 Alias added: GHSA-jh87-7j82-9cr2
References
More Checksec Canopy vulnerabilities
- TI-2018-06554 CheckSec Canopy 3.x before 3.0.7 has stored XSS via the Login Page Disclaimer, allowing… CVSS 3.0MEDIUM 4.8
Sources
- CVE-2021-34815 · CVE Program
- CVE-2021-34815 · NVD
- FIRST EPSS
- GHSA-jh87-7j82-9cr2 · GitHub Advisory Database · CC BY 4.0
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