CVE-2026-90939

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-14. the CNA's CVSS baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

novel-plus through 5.3.3 contains an information disclosure vulnerability in the /sys/user/list endpoint that lacks proper permission annotations. Authenticated attackers can retrieve password hashes and personal data including email addresses and phone numbers for users within their data scope, enabling offline hash cracking and account takeover.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

September 14, 2026

Last Modified

September 24, 2026

Advisory Details (6)

Auto-updated Sep 14, 2026
🔬 Proof of concept available. Patch available. Sources: github_release.
generic🟡 PoC Available

novel-plus through 5.3.3 Missing Authorization on the Admin /sys/user/list Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/novel-plus-through-5.3.3-missing-authorization-on-the-admin-sys-user-list-endpoint
generic

GitHub - 201206030/novel-plus: novel-plus 是一个多端（PC、WAP）阅读 、功能完善的小说 CMS 系统。包括小说推荐、小说检索、小说排行、小说阅读、小说书架、小说评论、小说爬虫、会员中心、作家专区、充值订阅、新闻发布等功能。 · GitHub

https://github.com/201206030/novel-plus
github_release Patch Available

novel-plus v5.3.3

Patch available: 201206030/novel-plus v5.3.3

https://github.com/201206030/novel-plus/releases/tag/v5.3.3
generic

novel-plus/novel-admin/src/main/resources/mybatis/system/UserMapper.xml at d63c3ee394657046ebd469e263532a350a60e930 · 201206030/novel-plus · GitHub

https://github.com/201206030/novel-plus/blob/d63c3ee394657046ebd469e263532a350a60e930/novel-admin/src/main/resources/mybatis/system/UserMapper.xml
generic

novel-plus/novel-admin/src/main/java/com/java2nb/system/controller/SysUserController.java at d63c3ee394657046ebd469e263532a350a60e930 · 201206030/novel-plus · GitHub

https://github.com/201206030/novel-plus/blob/d63c3ee394657046ebd469e263532a350a60e930/novel-admin/src/main/java/com/java2nb/system/controller/SysUserController.java
generic

cve-request-poc/novel-plus/poc-03-user-list-password-hash-disclosure.py at master · LinYuanyi1/cve-request-poc · GitHub

https://github.com/LinYuanyi1/cve-request-poc/blob/master/novel-plus/poc-03-user-list-password-hash-disclosure.py

Vendor Advisories for CVE-2026-90939(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 19× in last 7d / 35× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-24 14:53 UTCEG score recompute
  2. 2026-09-24 14:53 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 17:22 UTCGHSA enrichment
  6. 2026-09-23 07:36 UTCEG score recompute
  7. 2026-09-23 07:36 UTCGHSA enrichment
  8. 2026-09-22 16:01 UTCEPSS rescore
  9. 2026-09-22 08:30 UTCEG score recompute
  10. 2026-09-22 08:30 UTCGHSA enrichment
  11. 2026-09-21 21:09 UTCEPSS rescore
  12. 2026-09-21 09:23 UTCEG score recompute
  13. 2026-09-21 09:23 UTCGHSA enrichment
  14. 2026-09-20 20:16 UTCEPSS rescore
  15. 2026-09-20 10:17 UTCEG score recompute
  16. 2026-09-20 10:17 UTCGHSA enrichment
  17. 2026-09-19 11:10 UTCEG score recompute
  18. 2026-09-19 11:10 UTCGHSA enrichment
  19. 2026-09-18 19:28 UTCEPSS rescore
  20. 2026-09-18 12:04 UTCEG score recompute
  21. 2026-09-18 12:04 UTCGHSA enrichment
  22. 2026-09-17 19:32 UTCEPSS rescore
  23. 2026-09-17 12:57 UTCEG score recompute
  24. 2026-09-17 12:57 UTCGHSA enrichment
  25. 2026-09-16 14:09 UTCEPSS rescore
Show 10 more
  1. 2026-09-16 13:49 UTCEG score recompute
  2. 2026-09-16 13:49 UTCGHSA enrichment
  3. 2026-09-16 05:15 UTCEPSS rescore
  4. 2026-09-15 14:28 UTCEG score recompute
  5. 2026-09-15 14:28 UTCGHSA enrichment
  6. 2026-09-14 15:21 UTCEG score recompute
  7. 2026-09-14 14:55 UTCEG score recompute
  8. 2026-09-14 14:30 UTCEG score recompute
  9. 2026-09-14 14:05 UTCEG score recompute
  10. 2026-09-14 14:04 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-90939?
CVE-2026-90939 is a medium vulnerability published on September 14, 2026. novel-plus through 5.3.3 contains an information disclosure vulnerability in the /sys/user/list endpoint that lacks proper permission annotations. Authenticated attackers can retrieve password hashes and personal data including email addresses and phone numbers for users within their data scope,…
When was CVE-2026-90939 disclosed?
CVE-2026-90939 was first published in the National Vulnerability Database on September 14, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90939 actively exploited?
CVE-2026-90939 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 62.7% of all scored CVEs.
What is the CVSS score of CVE-2026-90939?
CVE-2026-90939 has a CVSS v4.0 base score of 6.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-90939?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90939, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-90939

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