CVE-2017-8298 json
Canvs Canvas Cross-site Scripting (XSS) via title and content fields
published 2017-04-27 9 y ago modified 2026-06-17 4 mo ago also GHSA-3657-q433-mmpx , EUVD-2022-2117
- cvss
- 5.4
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
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.
Patch / fix
Exploit prediction
0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.4 | CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| GitHub | 3.0 | 5.4 | CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | austintoddj/canvas | 1 listed version |
no fix listed |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/cnvs/canvas/issues/331
web, issue-tracking, patch
-
nvd.nist.gov
/vuln/detail/CVE-2017-8298
advisory
-
github.com
/austintoddj/canvas
package
Sources
- CVE List CVE-2017-8298
- GitHub Advisory GHSA-3657-q433-mmpx
- NVD CVE-2017-8298
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.