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.

CVSS 4.0

5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2026-10-09

Modified

2026-10-09

Record from

the NVD, synced 2026-10-19

References

• https://github.com/toolbox-team/reddit-moderator-toolbox
• https://github.com/toolbox-team/reddit-moderator-toolbox/commit/26f45ba21d84cecb92b1a820896ad3bf5254376e
• https://www.vulncheck.com/advisories/moderator-toolbox-before-4.0.14-stored-xss-via-removal-reasons-configuration

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