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CVE-2020-13873

26
FAUCET Score

CVE-2020-13873 is a critical SQL Injection vulnerability in Codoforum versions prior to 4.9, specifically within the get_topic_info() function in sys/CODOF/Forum/Topic.php. This flaw allows unauthenticated remote attackers to bypass the admin page by leveraging a leaked password-reset token, potentially leading to full system compromise. With a CVSS score of 9.8 (CRITICAL), the vulnerability has a low attack complexity and requires no user interaction, enabling attackers to upload PHP shells and execute arbitrary code. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.9CPE matchmatch criteria
cpe:2.3:a:codologic:codoforum:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.92%
Probability of exploitation in next 30 days
EPSS Percentile
91.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0491 is in the 85th percentile among its peer group of 36,829 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

codologic.com / forum
Vendor Advisory
blog.sonarsource.com / codoforum-4.8.7-critical-code-vulnerabilities-explained
ExploitThird Party Advisory
community.sonarsource.com / c/announce/stories/23
Third Party Advisory
community.sonarsource.com / t/codoforum-4-8-7-critical-code-vulnerabilities-explained/28297
ExploitThird Party Advisory
github.com / SmashITs
Third Party Advisory
twitter.com / sonarsource/status/1300818196090384384
ExploitThird Party Advisory