What is CVE-2016-20098?

CVE-2016-20098 is a medium-severity vulnerability in Toolbox-Team Reddit-Moderator-Toolbox, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-10-09.

How severe is CVE-2016-20098?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Toolbox-Team Reddit-Moderator-Toolbox

CVE-2016-20098

Moderator Toolbox (reddit-moderator-toolbox) before 4.0.14 contains a stored cross-site scripting vulnerability in the removalreasons module, which inserts subreddit toolbox wiki fields into popup HTML without encoding. Attackers who can edit the toolbox wiki page can plant JavaScript in fields like pmsubject, header, or reason titles to act with moderators' Reddit sessions.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-09 · last modified 2026-10-09.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Toolbox-Team Reddit-Moderator-Toolbox

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/toolbox-team/reddit-moderator-toolbox/commit/26f45ba21d84cecb92b1a82… (patch)
github.com/toolbox-team/reddit-moderator-toolbox (product)
www.vulncheck.com/advisories/moderator-toolbox-before-4.0.14-stored-xss-via-rem… (third-party-advisory)

Frequently asked questions

What is CVE-2016-20098?: CVE-2016-20098 is a medium-severity vulnerability in Toolbox-Team Reddit-Moderator-Toolbox, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-10-09.
How severe is CVE-2016-20098?: Medium severity. CVSS v3 base score is 5.4 out of 10.