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CVE-2025-6866VulnerabilityPublished

CVE-2025-6866: code-projects Simple Forum · Path Traversal

Affects code-projects Simple ForumSource CVE Database V5

0

Not known to be exploited · CVSS 5.3 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Jun 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
code-projects Simple ForumAffected
  • =1.0
Fixed in–

AI-suggested

Immediate mitigation steps include restricting access to the /forum_downloadfile.php endpoint via web application firewalls (WAFs) or network-level controls to trusted IP addresses only. Implement input validation and sanitization on the 'filename' parameter to prevent directory traversal sequences such as '../'. If possible, disable or remove the vulnerable download functionality until a patch is available. Conduct a thorough audit of server file permissions to ensure that the web server process has minimal access rights, limiting the impact of any traversal attempts. Monitor web server logs for suspicious requests attempting directory traversal patterns. Organizations should also consider deploying runtime application self-protection (RASP) solutions that can detect and block exploitation attempts in real-time. Finally, maintain an inventory of all instances running Simple Forum 1.0 and plan for an upgrade or migration to a patched or alternative forum solution once available.

Description

A vulnerability has been found in code-projects Simple Forum 1.0 and classified as critical. This vulnerability affects unknown code of the file /forum_downloadfile.php. The manipulation of the argument filename leads to path traversal. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

References

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