CVE-2021-39420
MEDIUMCVSS 6.1/10EPSS 0.64%
Last modified
CVE-2021-39420 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Multiple Cross Site Scripting (XSS) vulnerabilities exist in VFront 0.99.5 via the (1) s parameter in search_all.php and the (2) msg parameter in add.attach.php.. EPSS estimates a 0.64% chance of exploitation in the next 30 days.
Description
Multiple Cross Site Scripting (XSS) vulnerabilities exist in VFront 0.99.5 via the (1) s parameter in search_all.php and the (2) msg parameter in add.attach.php.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Vfront | Vfront | 0.99.5 |
References
- https://sisl.lab.uic.edu/projects/chess/vfront0-99-5/Exploit, Third Party Advisory
- https://sisl.lab.uic.edu/projects/chess/vfront0-99-5/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-39420?
Multiple Cross Site Scripting (XSS) vulnerabilities exist in VFront 0.99.5 via the (1) s parameter in search_all.php and the (2) msg parameter in add.attach.php.
How severe is CVE-2021-39420?
CVE-2021-39420 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.
How do I fix CVE-2021-39420?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-3941In ImfChromaticities.cpp routine RGBtoXYZ(), there are some …6.5
- CVE-2021-39411Multiple Cross Site Scripting (XSS) vulnerabilities exist in…6.1
- CVE-2021-39412Multiple Cross Site Scripting (XSS) vulnerabilities exists i…6.1
- CVE-2021-39413Multiple Cross Site Scripting (XSS) vulnerabilities exits in…6.1
- CVE-2021-39416Multiple Cross Site Scripting (XSS) vulnerabilities exists i…6.1
- CVE-2021-3942Certain HP Print products and Digital Sending products may b…9.8
- CVE-2021-39421A cross-site scripting (XSS) vulnerability in SeedDMS v6.0.1…6.1
- CVE-2021-39425SeedDMS v6.0.15 was discovered to contain an open redirect v…6.1
- CVE-2021-39426An issue was discovered in /Upload/admin/admin_notify.php in…9.8
- CVE-2021-39427Cross site scripting vulnerability in 188Jianzhan 2.10 allow…5.4
- CVE-2021-39428Cross Site Scripting (XSS) vulnerability in Users.php in eyo…5.4
- CVE-2021-3943A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 …9.8
Are you affected by CVE-2021-39420?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST