CVE-2021-29501Network attack vector

Sensitive-data disclosure via format-string attribute traversal

Published May 10, 2021 · Updated Aug 3, 2024

Injection in the Ticketer cog in Dav-Git Dav-Cogs before 1.0.1 allows remote authenticated users to expose sensitive information. Python str.format evaluates crafted replacement fields against a full discord.Member object, enabling chained attribute access to otherwise hidden values. An authenticated Discord user who can supply the crafted ticket message can disclose data reachable from that object, with no demonstrated code execution.

CVSS severity8.1
High
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Injection in the Ticketer cog in Dav-Git Dav-Cogs before 1.0.1 allows remote authenticated users to expose sensitive information. Python str.format evaluates crafted replacement fields against a full discord.Member object, enabling chained attribute access to otherwise hidden values. An authenticated Discord user who can supply the crafted ticket message can disclose data reachable from that object, with no demonstrated code execution.

The record

CVE
CVE-2021-29501
Published
May 10, 2021
Updated
Aug 3, 2024
Vendor
Dav-Git
Product
Dav-Cogs
Classifications
CWE-77, CWE-74, T1190
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 1.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Dav-Git · Dav-Cogsversion=< 1.0.1

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1190Exploit Public-Facing Application

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo