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Fencer Vulns
critical 9.8

CVE-2020-13873 json

A SQL Injection vulnerability in get_topic_info() in sys/CODOF/Forum/Topic.php in Codoforum before 4.9 allows remote attackers (pre-authent…

published 2021-05-12 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-6081

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.9%
EPSS 4.9% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

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.)

Patch / fix

  • codologic codoforum 4.9

Exploit prediction

4.92% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • community.sonarsource.com https://community.sonarsource.com/t/codoforum-4-8-7-critical-code-vulnerabilities-explained/28297 referenced PoC, tagged "exploit" by a source, unverified
  • blog.sonarsource.com https://blog.sonarsource.com/codoforum-4.8.7-critical-code-vulnerabilities-explained referenced PoC, tagged "exploit" by a source, unverified
  • twitter.com https://twitter.com/sonarsource/status/1300818196090384384 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-89 Improper Neutralization of Special Elements used in an SQL Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.