CVE-2021-24276
MediumPublic exploitContact Form by Supsystic <= 1.7.14 - Reflected Cross-Site scripting
Published May 6, 2021 · Updated Aug 3, 2024 · Also known as 5b48e0cc-5691-4df0-81ef-72f47d29ce30
Key Facts
Routine patching- CVE-2021-24276 is a medium-severity vulnerability (CVSS 6.1 v3.1) affecting Contact Form (Supsystic), Contact Form by Supsystic (wordpress-plugin).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 16% probability of exploitation in the next 30 days.
- Fixed versions are available, including Contact Form by Supsystic 1.7.15, Contact Form 1.7.15.
- Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.
CVSS v3.1
6.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS (30-day exploit likelihood)
16%
Higher than 96.8% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2021-24276 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
The Contact Form by Supsystic WordPress plugin before 1.7.15 did not sanitise the tab parameter of its options page before outputting it in an attribute, leading to a reflected Cross-Site Scripting issue
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Contact FormSupsystic | See advisory | 1.7.15 |
| Contact Form by Supsysticwordpress-plugin | >= 1.7.15 | 1.7.15 |
Patched Releases
Contact Form by Supsystic
1.7.15
Contact Form
1.7.15
Timeline
Publicly disclosed
May 6, 2021
Last updated
Aug 3, 2024
Weakness Type
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-24258
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-24259
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-24265
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-24266
- advisoryhttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-24267
FAQ
Common Questions.
The Contact Form by Supsystic WordPress plugin before 1.7.15 did not sanitise the tab parameter of its options page before outputting it in an attribute, leading to a reflected Cross-Site Scripting issue
Affected: Contact Form (Supsystic); Contact Form by Supsystic (wordpress-plugin) versions >= 1.7.15. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Contact Form by Supsystic 1.7.15, Contact Form 1.7.15.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.
Is CVE-2021-24276 Running On Your Attack Surface?
Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.
Request A Demo