Vulnerability · Published Oct 8, 2026 · Assigned by VulnCheck

CVE-2026-107801Jivejdon through 5.0 Stored XSS via Attachment Upload Content-Type

Medium 5.4

In plain English

A medium-severity cross-site scripting in jivejdon from banq. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.2%top 88.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Jivejdon through 5.0 contains a stored cross-site scripting vulnerability that allows authenticated attackers to execute JavaScript by uploading attachments with an attacker-supplied Content-Type. Attackers can upload a file declared as text/html, which UploadShowAction serves inline, and share its link to run JavaScript on the application's origin for viewing users.

Affected products (as reported)

Vendor	Product	Versions
banq	jivejdon	0 – through 5.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References

GitHub Issue #28 issue-tracking
https://github.com/banq/jivejdon product
https://github.com/banq/jivejdon/blob/ee67a65e65228644a71c8317d7e34deea50f95ef/src/main/java/com/jdon/jivejdon/presentation/action/UploadShowAction.java#L135-L142 technical-description
https://github.com/banq/jivejdon/blob/ee67a65e65228644a71c8317d7e34deea50f95ef/src/main/java/com/jdon/jivejdon/domain/model/message/upload/UploadHelper.java#L84-L91 technical-description
VulnCheck Advisory: Jivejdon through 5.0 Stored XSS via Attachment Upload Content-Type third-party-advisory