CVE-2021-40921
Cross-site scripting (XSS) vulnerability in _contactform.inc.php in Detector 0.8.5 and below...
Cross-site scripting (XSS) vulnerability in _contactform.inc.php in Detector 0.8.5 and below version allows remote attackers to inject arbitrary web script or HTML via the cid parameter.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Cross-site scripting (XSS) vulnerability in _contactform.inc.php in Detector 0.8.5 and below version allows remote attackers to inject arbitrary web script or HTML via the cid parameter.
- Record
CVE-2021-40921- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
Cross-site scripting (XSS) vulnerability in _contactform.inc.php in Detector 0.8.5 and below version allows remote attackers to inject arbitrary web script or HTML via the cid parameter.
- Record
CVE-2021-40921- Updated
- 2026-11-02
EUVDEUVD-2021-28076 No score
Cross-site scripting (XSS) vulnerability in _contactform.inc.php in Detector 0.8.5 and below version allows remote attackers to inject arbitrary web script or HTML via the cid parameter.
- Record
EUVD-2021-28076- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-v332-vc75-h5m8 No score
Cross-site scripting (XSS) vulnerability in _contactform.inc.php in Detector 0.8.5 and below...
Cross-site scripting (XSS) vulnerability in _contactform.inc.php in Detector 0.8.5 and below version allows remote attackers to inject arbitrary web script or HTML via the cid parameter.
- Record
GHSA-v332-vc75-h5m8- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-40921 is a medium vulnerability (CVSS 6.1) in Detector Project Detector, published October 1, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.73%, the 54th percentile. No source names a fixed version.