CVE-2021-29502: WarnSystem is a cog (plugin) for the Red discord bot

Q: How do I fix CVE-2021-29502?

warnsystem: upgrade to 1.3.18. Exact commands for each OS are on this page.

Q: Is CVE-2021-29502 being exploited?

CVE-2021-29502 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-29502 affect?

CVE-2021-29502 affects warnsystem. Severity is high (CVSS 7.3). WarnSystem is a cog (plugin) for the Red discord bot. A vulnerability has been found in the code that allows any user to access sensible informations by setting up a specific template which is not properly sanitized. The problem has been pa

This month

HIGH 7.3UPGRADE

CVE-2021-29502 is a high-severity flaw (CVSS 7.3) affecting warnsystem. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WarnSystem is a cog (plugin) for the Red discord bot. A vulnerability has been found in the code that allows any user to access sensible informations by setting up a specific template which is not properly sanitized. The problem has been patched in version 1.3.18. Users should update and type `!warnsysteminfo` to check that their version is 1.3.18 or above. As a workaround users may unload the WarnSystem cog or disable the `!warnset description`

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-74, CWE-94
Published	2021-05-10
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: warnsystem project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-05-10 18:15 UTCPublished CVE record published
2026-06-17 03:47 UTCUpdated Record last modified

warnsystem project warnsystem UPGRADE

Affected: < 1.3.18

Fixed in: 1.3.18

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy warnsystem || rpm -q warnsystem || warnsystem --version

2. UPGRADE to 1.3.18 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade warnsystem

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade warnsystem

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-29502?

warnsystem: upgrade to 1.3.18. Exact commands for each OS are on this page.

Is CVE-2021-29502 being exploited?

CVE-2021-29502 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-29502 affect?

CVE-2021-29502 affects warnsystem. Severity is high (CVSS 7.3). WarnSystem is a cog (plugin) for the Red discord bot. A vulnerability has been found in the code that allows any user to access sensible informations by setting up a specific template which is not properly sanitized. The problem has been pa

How urgent is CVE-2021-29502?

Priority 40/100. High severity

Software pages

Discord vulnerabilities

References

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