CVE-2021-29502Network attack vector

Remote code execution via unsanitized template formatting

Published May 10, 2021 · Updated Aug 3, 2024

Code injection in the WarnSystem cog for Red-DiscordBot before 1.3.18 allows remote authenticated users to execute code via crafted templates. The !warnset description template is passed to Python str.format with Discord member objects, allowing attribute traversal beyond intended fields. Any Discord user able to invoke the command can trigger the flaw; exploitation can expose sensitive information and achieve remote code execution.

CVSS severity6.5
Medium
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in the WarnSystem cog for Red-DiscordBot before 1.3.18 allows remote authenticated users to execute code via crafted templates. The !warnset description template is passed to Python str.format with Discord member objects, allowing attribute traversal beyond intended fields. Any Discord user able to invoke the command can trigger the flaw; exploitation can expose sensitive information and achieve remote code execution.

The record

CVE
CVE-2021-29502
Published
May 10, 2021
Updated
Aug 3, 2024
Vendor
Laggron
Product
Laggron's Dumb Cogs
Classifications
CWE-74, CWE-94, T1059.006
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 10, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.3.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Laggron · Laggron's Dumb Cogsversion=< 1.3.18

Published CVSS scores

6.5NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.0NISTAV:N/AC:L/Au:S/C:P/I:N/A:N
7.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ("Injection")
CWE-94Improper Control of Generation of Code ("Code Injection")
T1059.006Command and Scripting Interpreter: Python

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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