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Fencer Vulns
critical 9.8

CVE-2021-42967 json

Unrestricted file upload in /novel-admin/src/main/java/com/java2nb/common/controller/FileController.java in novel-plus all versions allows…

published 2022-05-13 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29922

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

Unrestricted file upload in /novel-admin/src/main/java/com/java2nb/common/controller/FileController.java in novel-plus all versions allows allows an attacker to upload malicious JSP files.

Exploit prediction

1.07% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/201206030/novel-plus/issues/62 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.