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VulnerabilityPublished Updated

CVE-2023-49493: DedeCMS · Cross-site Scripting

Source CVE Database V5

0

Not known to be exploited · CVSS 6.1 Medium.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 36% 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 Dec 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

Affected software

ProductAffectedFixed in
GitHubhebing123/cvepkg:github/hebing123/cveOther threatsAffected
  • =5.7.111
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

  1. Immediate mitigation should focus on input validation and output encoding: ensure that all user-supplied input, especially the 'v' parameter in selectimages.php, is properly sanitized and encoded before being reflected in responses.
  2. Implement Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of XSS attacks.
  3. Employ web application firewalls (WAFs) with rules designed to detect and block reflected XSS payloads targeting known vulnerable parameters.
  4. Conduct user awareness training to reduce the risk of successful social engineering that could lead to exploitation.
  5. Monitor web server logs for suspicious requests targeting selectimages.php with unusual parameter values.
  6. 7. Use security headers such as HttpOnly and Secure flags on cookies to mitigate session hijacking risks. 8. Regularly audit and test web applications for XSS vulnerabilities using automated scanners and manual penetration testing to identify and remediate similar issues proactively.

Description

DedeCMS v5.7.111 was discovered to contain a reflective cross-site scripting (XSS) vulnerability via the v parameter at selectimages.php.

References

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