CVE-2026-57310: JCD Windu CMS weak password hashing using MD5 and SHA1

CVE-2026-57310 · Severity: info · CVSS 6.3 · Published 2026-07-20

Windu CMS, a platform used for building and managing websites, uses outdated and weak methods to protect user passwords. If an attacker gains access to the website's database, they can easily reverse the stored password information to reveal the actual plain-text passwords of users and administrators. This could lead to full account takeovers and unauthorized access to the website's management panel.

Technologies: JCD Windu CMS. Vendors: JCD.

Quick answers

Is CVE-2026-57310 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-57310 being exploited in the wild.
How severe is CVE-2026-57310?
Informational severity, with a CVSS score of 6.3, published 20 July 2026.
Which products and versions are affected?
JCD Windu CMS 4.1.
Is there a fix for CVE-2026-57310?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-57310 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-57310?
Check whether you run JCD Windu CMS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

Windu CMS (confirmed in version 4.1) implements insufficient computational effort for password storage by utilizing MD5 and SHA1 hashing algorithms combined with a static salt. This violates modern cryptographic standards which require slow, salted, and iterated hashing functions like Argon2 or bcrypt. If an attacker obtains the password hashes (e.g., via a separate SQL injection vulnerability), the use of weak algorithms and a non-unique salt allows for rapid offline brute-force or rainbow table attacks to recover cleartext credentials. No patch is currently available as vendor contact attempts were unsuccessful.

Affected products

  • JCD Windu CMS 4.1

Timeline

  • 2026-07-20: advisory: Advisory published by CERT.PL

References

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