Skip to main content
VulnerabilityPublished Updated

CVE-2023-48031: OpenSupports · Unrestricted File Upload

Source CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 16:39 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.4% chance of exploitation in 30 days – higher than 73% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Nov 2023

  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 26 Oct 2026.

What to do

AI-suggested

Immediate mitigation steps include restricting or disabling file uploads in the comment function until a patch is available. Organizations should implement strict server-side validation that checks both file extensions and magic bytes, rejecting files that do not conform to expected safe types. Employing application-layer firewalls or web application firewalls (WAFs) with custom rules to detect and block suspicious file upload patterns can reduce risk. Monitoring logs for unusual upload activity and scanning uploaded files for malicious content are critical. Segmentation of the application environment and least privilege principles should be enforced to limit the impact of a potential compromise. Organizations should also prepare incident response plans specific to web application compromises and keep abreast of vendor updates for official patches. If possible, upgrading to a non-vulnerable version or applying vendor-provided hotfixes once available is essential.

Description

OpenSupports v4.11.0 is vulnerable to Unrestricted Upload of File with Dangerous Type. In the comment function, an attacker can bypass security restrictions and upload a .bat file by manipulating the file's magic bytes to masquerade as an allowed type. This can enable the attacker to execute arbitrary code or establish a reverse shell, leading to unauthorized file writes or control over the victim's station via a crafted file upload operation.

References

Community reviews

Loading reviews…