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Fencer Intel
medium 5.4

CVE-2021-46087 json

In jfinal_cms >= 5.1 0, there is a storage XSS vulnerability in the background system of CMS.

published 4y ago modified 4mo ago also EUVD-2021-32789

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

In jfinal_cms >= 5.1 0, there is a storage XSS vulnerability in the background system of CMS. Because developers do not filter the parameters submitted by the user input form, any user with background permission can affect the system security by entering malicious code.

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Exploit prediction

0.50% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/jflyfox/jfinal_cms/issues/19 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel 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.