CVE-2026-90941

MEDIUMPre-NVD 4.34.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 4.3 from GitHub Security Advisory published 2026-09-14. The CNA's CVSS baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Elevated

Also known asEUVD-2026-77485 (ENISA EUVD) · GHSA-39v2-xq6r-hppw (GitHub Security Advisories)Source: ENISA EUVD

4.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 4.3Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

novel-plus through 5.3.3 contains an authorization bypass vulnerability in the BookController download endpoint that allows authenticated backend accounts to export complete book text including paid chapters. Attackers can supply a bookId and bookName to retrieve all chapter content without VIP or purchase verification, bypassing the permission checks and data-scope limits enforced elsewhere in the admin interface.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity43% × 45%
Impact severity (EG Severity): CVSS 4.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
34th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (4.3): severity, escalated by confirmed exploitation. This CVE's 4.3 is its impact severity (EG Severity), not escalated.

EG Severity
4.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 14, 2026

Last Modified

September 24, 2026

Advisory Details (6)

Auto-updated Sep 14, 2026
Patch available. Sources: github_release.
Web page

novel-plus through 5.3.3 Missing Authorization on the Admin Book Download Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/novel-plus-through-5.3.3-missing-authorization-on-the-admin-book-download-endpoint
Web page

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
Web page

novel-plus/novel-front/src/main/java/com/java2nb/novel/controller/page/PageController.java at d63c3ee394657046ebd469e263532a350a60e930 · 201206030/novel-plus · GitHub

https://github.com/201206030/novel-plus/blob/d63c3ee394657046ebd469e263532a350a60e930/novel-front/src/main/java/com/java2nb/novel/controller/page/PageController.java
Web page

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

https://github.com/201206030/novel-plus/blob/d63c3ee394657046ebd469e263532a350a60e930/novel-admin/src/main/java/com/java2nb/novel/controller/BookController.java
Web page

cve-request-poc/novel-plus/poc-09-book-download-missing-authorization.py at master · LinYuanyi1/cve-request-poc · GitHub

https://github.com/LinYuanyi1/cve-request-poc/blob/master/novel-plus/poc-09-book-download-missing-authorization.py

Vendor Advisories for CVE-2026-90941(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 8× in last 7d / 54× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 112 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 13 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:36 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  4. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  5. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  6. 2026-10-27 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  7. 2026-10-27 13:25 UTCOSV refresh
  8. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  9. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  10. 2026-10-25 13:51 UTCEG score recompute
  11. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  12. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  13. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  14. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  15. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  16. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  17. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  18. 2026-10-18 03:00 UTCEG score recompute
  19. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  20. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  21. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  22. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  23. 2026-10-14 15:37 UTCEG score recompute
  24. 2026-10-14 15:37 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  25. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
Show 74 more
  1. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  2. 2026-10-12 14:46 UTCEG score recompute
  3. 2026-10-11 19:45 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  4. 2026-10-11 19:13 UTCEG score recompute
  5. 2026-10-11 16:30 UTCEG score recompute
  6. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  7. 2026-10-11 13:45 UTCEG score recompute
  8. 2026-10-10 20:14 UTCEG score recompute
  9. 2026-10-10 20:13 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  11. 2026-10-09 21:35 UTCEG score recompute
  12. 2026-10-09 21:35 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  13. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  14. 2026-10-08 22:56 UTCEG score recompute
  15. 2026-10-08 22:56 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  16. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  17. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  18. 2026-10-07 21:08 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  19. 2026-10-06 22:29 UTCEG score recompute
  20. 2026-10-06 22:29 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  21. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  22. 2026-10-05 23:52 UTCEG score recompute
  23. 2026-10-05 23:52 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  24. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  25. 2026-10-05 01:10 UTCEG score recompute
  26. 2026-10-05 01:10 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  27. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  28. 2026-10-04 02:22 UTCEG score recompute
  29. 2026-10-04 02:22 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  30. 2026-10-03 03:44 UTCEG score recompute
  31. 2026-10-03 03:44 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  32. 2026-10-02 05:06 UTCEG score recompute
  33. 2026-10-02 05:06 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  34. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  35. 2026-10-01 05:28 UTCEG score recompute
  36. 2026-10-01 05:28 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  37. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  38. 2026-09-30 06:50 UTCEG score recompute
  39. 2026-09-30 06:50 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  40. 2026-09-29 08:12 UTCEG score recompute
  41. 2026-09-29 08:12 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  42. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  43. 2026-09-28 09:27 UTCEG score recompute
  44. 2026-09-28 09:27 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  45. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  46. 2026-09-27 10:49 UTCEG score recompute
  47. 2026-09-27 10:49 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  48. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  49. 2026-09-26 12:08 UTCEG score recompute
  50. 2026-09-26 12:08 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  51. 2026-09-25 13:30 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  52. 2026-09-24 14:53 UTCEG score recompute
  53. 2026-09-24 14:53 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  54. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  55. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  56. 2026-09-23 17:22 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  57. 2026-09-23 07:47 UTCEG score recompute
  58. 2026-09-23 07:47 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  59. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  60. 2026-09-22 09:10 UTCEG score recompute
  61. 2026-09-22 09:10 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  62. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  63. 2026-09-21 10:28 UTCEG score recompute
  64. 2026-09-21 10:28 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  65. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  66. 2026-09-20 11:51 UTCEG score recompute
  67. 2026-09-20 11:51 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  68. 2026-09-19 12:54 UTCEG score recompute
  69. 2026-09-19 12:54 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  70. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  71. 2026-09-18 14:16 UTCEG score recompute
  72. 2026-09-18 14:16 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3
  73. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  74. 2026-09-17 15:34 UTCGHSA enrichmentGHSA-39v2-xq6r-hppw · GitHub CVSS 4.3

Frequently asked(5)

What is CVE-2026-90941?
CVE-2026-90941 is a medium-severity vulnerability; its CVE record was published on September 14, 2026. novel-plus through 5.3.3 contains an authorization bypass vulnerability in the BookController download endpoint that allows authenticated backend accounts to export complete book text including paid chapters. Attackers can supply a bookId and bookName to retrieve all chapter content without VIP or…
When was CVE-2026-90941 made public?
CVE-2026-90941 was made public on September 12, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on September 14, 2026. EchelonGraph's copy of the record carries a last-modified date of September 24, 2026; the record at its source may have been updated since.
Is CVE-2026-90941 actively exploited?
CVE-2026-90941 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (34th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-90941?
CVE-2026-90941 has a CVSS base score of 4.3 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-90941?
A fix for CVE-2026-90941 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-90941 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-90941

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