CVE-2021-40928 json
Cross-site scripting (XSS) vulnerability in index.php in FlexTV beta development version allows remote attackers to inject arbitrary web sc…
published 5y ago modified 4mo ago also EUVD-2021-28082
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
Cross-site scripting (XSS) vulnerability in index.php in FlexTV beta development version allows remote attackers to inject arbitrary web script or HTML via the PHP_SELF parameter.
Is CVE-2021-40928 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/d8ahazard/FlexTV/issues/37
issue-tracking, third-party-advisory
-
github.com
/d8ahazard/FlexTV
third-party-advisory
Sources
- CVE List CVE-2021-40928
- NVD CVE-2021-40928
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.