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Fencer Vulns
medium 5.4

CVE-2020-28141 json

The messaging subsystem in the Online Discussion Forum 1.0 is vulnerable to XSS in the message body.

published 2021-04-19 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-20627

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

Summary

The messaging subsystem in the Online Discussion Forum 1.0 is vulnerable to XSS in the message body. An authenticated user can send messages to arbitrary users on the system that include javascript that will execute when viewing the messages page.

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • exploit-db.com https://www.exploit-db.com/exploits/48897 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 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.