# CVE-2026-110104: Xxyopen novel weak password hashing vulnerability

Source: https://junglewise.ai/threats/cve-2026-110104-xxyopen-novel-through-3-5-0-contains-a-weak-password-hashing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-110104 · Severity: medium · CVSS 5.9 · Published 2026-10-13

Xxyopen novel is a web application framework for managing online content libraries. The application stores user passwords using weak, unsalted MD5 hashing, allowing attackers who gain access to the password database through a breach or backup exposure to rapidly crack passwords using precomputed tables or GPU acceleration. Compromised credentials can then be reused to access user accounts and impersonate legitimate users.

Technologies: [Xxyopen Novel](https://junglewise.ai/threats/technologies/novel). Vendors: [Xxyopen](https://junglewise.ai/threats/vendors/xxyopen).

## Quick answers

**Is CVE-2026-110104 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-110104 being exploited in the wild.

**How severe is CVE-2026-110104?** Medium severity, with a CVSS score of 5.9, published 13 October 2026.

**Which products and versions are affected?** Xxyopen Novel through 3.5.0.

**Is there a fix for CVE-2026-110104?** 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-2026-110104 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-110104?** Check whether you run Xxyopen Novel 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

The UserServiceImpl.register() method hashes passwords with MD5 and no salt (setting salt to "0"), making them vulnerable to dictionary and rainbow table attacks. An attacker with database access can offline-crack the MD5 hashes to recover plaintext passwords, requiring only local access to the compromised database. A fix using bcrypt was committed in the referenced GitHub repository, replacing unsalted MD5 with proper password hashing.

## Affected products

- Xxyopen novel through 3.5.0

## Timeline

- 2026-10-13: disclosed

## References

- [https://github.com/201206030/novel/blob/v3.5.0/src/main/java/io/github/xxyopen/novel/service/impl/UserServiceImpl.java](https://github.com/201206030/novel/blob/v3.5.0/src/main/java/io/github/xxyopen/novel/service/impl/UserServiceImpl.java)
- [https://github.com/201206030/novel/commit/fa82ce7e426a5b29db469b8f13d2e29fc1260871](https://github.com/201206030/novel/commit/fa82ce7e426a5b29db469b8f13d2e29fc1260871)

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