CVE-2020-5842
Codoforum 4.8.3 allows XSS in the user registration page: via the username field to the index.php...
Codoforum 4.8.3 allows XSS in the user registration page: via the username field to the index.php?u=/user/register URI. The payload is, for example, executed on the admin/index.php?page=users/manage page.
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
Codoforum 4.8.3 allows XSS in the user registration page: via the username field to the index.php?u=/user/register URI. The payload is, for example, executed on the admin/index.php?page=users/manage page.
- Record
CVE-2020-5842- 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
Codoforum 4.8.3 allows XSS in the user registration page: via the username field to the index.php?u=/user/register URI. The payload is, for example, executed on the admin/index.php?page=users/manage page.
- Record
CVE-2020-5842- Updated
- 2026-11-02
EUVDEUVD-2020-26996 No score
Codoforum 4.8.3 allows XSS in the user registration page: via the username field to the index.php?u=/user/register URI. The payload is, for example, executed on the admin/index.php?page=users/manage page.
- Record
EUVD-2020-26996- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-p258-72gh-7cxv No score
Codoforum 4.8.3 allows XSS in the user registration page: via the username field to the index.php...
Codoforum 4.8.3 allows XSS in the user registration page: via the username field to the index.php?u=/user/register URI. The payload is, for example, executed on the admin/index.php?page=users/manage page.
- Record
GHSA-p258-72gh-7cxv- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | prasanthc41m/codoforum | 2022-02-09 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-5842 is a medium vulnerability (CVSS 6.1) in Codologic Codoforum, published January 7, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 1.82%, the 78th percentile. No source names a fixed version.
References
exploit-db.com/exploits/47876
medium.com/%40prasanthc41m/cve-2020-5842-stored-xss-vulnerability-in-codoforum-4-8-3-b2e1133c6a91
nvd.nist.gov/vuln/detail/CVE-2020-5842
github.com/advisories/GHSA-p258-72gh-7cxv