JFinal file validation vulnerability

published 2019-10-08 7 y ago modified 2026-06-17 4 mo ago also GHSA-279p-pc38-xx4p , EUVD-2022-1930

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.7%; EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits: 0; none known

In JFinal cos before 2019-08-13, as used in JFinal 4.4, there is a vulnerability that can bypass the isSafeFile() function: one can upload any type of file. For example, a .jsp file may be stored and almost immediately deleted, but this deletion step does not occur for certain exceptions.

Patch / fix

fixed in 2 links 2

maven com.jfinal:jfinal 4.5
jfinal jfinal 4.4

gitee.com/jfinal/cos@5eb23d6 commit
gitee.com/jfinal/cos@8d26eec commit

Exploit prediction

1.74% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/jfinal/jfinal/issues/171 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:P/A:N
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem	package	affected	fixed in
maven	com.jfinal:jfinal	<4.5	4.5

Classification

Weakness

CWE-434 Unrestricted Upload of File with Dangerous Type

References

gitee.com /jfinal/cos/commit/5eb23d6e384abaad19faa7600d14c9a2f525946a
web, permissions-required, vendor-advisory
gitee.com /jfinal/cos/commit/8d26eec61f0d072a68bf7393cf3a8544a1112130
web, permissions-required, vendor-advisory
github.com /jfinal/jfinal/issues/171
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2019-17352
advisory
gitee.com /jfinal/cos
package

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.

Summary