CVE-2020-13873

Name: CVE-2020-13873
Creator: NVD / NIST
Published: 2021-05-12T12:15:07.813+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 4.92%

Last modified Jun 17, 2026

CVE-2020-13873 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A SQL Injection vulnerability in get_topic_info() in sys/CODOF/Forum/Topic.php in Codoforum before 4.9 allows remote attackers (pre-authentication) to bypass the admin page via a leaked password-reset token of the admin. (As an admin, an attacker can upload a PHP shell and execute remote code on the operating system.). EPSS estimates a 4.92% chance of exploitation in the next 30 days.

Description

A SQL Injection vulnerability in get_topic_info() in sys/CODOF/Forum/Topic.php in Codoforum before 4.9 allows remote attackers (pre-authentication) to bypass the admin page via a leaked password-reset token of the admin. (As an admin, an attacker can upload a PHP shell and execute remote code on the operating system.)

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

4.92%

91.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Codologic	Codoforum	< 4.9

References

http://codologic.com/forum/Vendor Advisory
https://blog.sonarsource.com/codoforum-4.8.7-critical-code-vulnerabilities-explainedExploit, Third Party Advisory
https://community.sonarsource.com/c/announce/stories/23Third Party Advisory
https://community.sonarsource.com/t/codoforum-4-8-7-critical-code-vulnerabilities-explained/28297Exploit, Third Party Advisory
https://github.com/SmashITsThird Party Advisory
https://twitter.com/sonarsource/status/1300818196090384384Exploit, Third Party Advisory
http://codologic.com/forum/Vendor Advisory
https://blog.sonarsource.com/codoforum-4.8.7-critical-code-vulnerabilities-explainedExploit, Third Party Advisory
https://community.sonarsource.com/c/announce/stories/23Third Party Advisory
https://community.sonarsource.com/t/codoforum-4-8-7-critical-code-vulnerabilities-explained/28297Exploit, Third Party Advisory
https://github.com/SmashITsThird Party Advisory
https://twitter.com/sonarsource/status/1300818196090384384Exploit, Third Party Advisory

Timeline

Published: May 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13873?

How severe is CVE-2020-13873?

CVE-2020-13873 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.92% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13873?

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.

Are you affected by CVE-2020-13873?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST