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VulnerabilityPublished Updated

CVE-2025-60312: Sourcecodester Markdown to HTML Converter · Cross-site Scripting

Source CVE Database V5

0

Not known to be exploited · CVSS 6.1 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Oct 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 26 Oct 2026.

What to do

AI-suggested

European organizations should immediately audit their use of Sourcecodester Markdown to HTML Converter v1.0 and identify any instances in production or development environments. Until a patch is available, mitigate risk by restricting access to the tool to trusted users only and disabling public or anonymous access. Implement input validation and sanitization on the Markdown input field to strip or encode potentially malicious HTML or JavaScript content. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers. Educate users about the risks of clicking conversion buttons when receiving Markdown content from untrusted sources. Monitor logs for unusual activity related to the converter and consider isolating the service in a sandboxed environment. When a patch or update is released, prioritize its deployment. Additionally, consider replacing the vulnerable tool with alternative Markdown converters that have robust security practices and active maintenance.

Description

Sourcecodester Markdown to HTML Converter v1.0 is vulnerable to a Cross-Site Scripting (XSS) in the "Markdown Input" field, allowing a remote attacker to inject arbitrary HTML/JavaScript code that executes in the victim's browser upon clicking the "Convert to HTML" button.

References

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