What’s Vulnerable › Vulnerabilities

CVE-2020-13873

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-05-12 · updated 2026-06-17
• Weakness: CWE-89

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.)

Affected products

• Codologic Codoforum: before 4.9 — fixed in 4.9

How to fix

Upgrade to a fixed version: Codologic Codoforum 4.9. Check the vendor advisory for mitigations.

References

• http://codologic.com/forum/
• https://blog.sonarsource.com/codoforum-4.8.7-critical-code-vulnerabilities-explained
• https://community.sonarsource.com/c/announce/stories/23
• https://community.sonarsource.com/t/codoforum-4-8-7-critical-code-vulnerabilities-explained/28297
• https://github.com/SmashITs
• https://twitter.com/sonarsource/status/1300818196090384384
• http://codologic.com/forum/
• https://blog.sonarsource.com/codoforum-4.8.7-critical-code-vulnerabilities-explained
• https://community.sonarsource.com/c/announce/stories/23
• https://community.sonarsource.com/t/codoforum-4-8-7-critical-code-vulnerabilities-explained/28297
• https://github.com/SmashITs
• https://twitter.com/sonarsource/status/1300818196090384384

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