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TI-2023-12681 Aliases CVE-2023-28102GHSA-8832-4mm5-x2r6

Command injection in discordrb

Priority HIGH 76CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-78.

Summary

discordrb is an implementation of the Discord API using Ruby. In discordrb before commit `91e13043ffa` the `encoder.rb` file unsafely constructs a shell string using the file parameter, which can potentially leave clients of discordrb vulnerable to command injection. The library is not directly exploitable: the exploit requires that some client of the library calls the vulnerable method with user input. However, if unsafe input reaches the library method, then an attacker can execute arbitrary shell commands on the host machine. Full impact will depend on the permissions of the process running the `discordrb` library and will likely not be total system access. This issue has been addressed in code, but a new release of the `discordrb` gem has not been uploaded to rubygems. This issue is also tracked as `GHSL-2022-094`.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.02567 85th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed discordrb (RubyGems): 3.4.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
shardlabdiscordrbup to 3.4.1—No fix listedCNA
—discordrb (RubyGems)before 3.4.33.4.3Patch availableGHSA-8832-4mm5-x2r6
  • discordrb Vendorshardlab Affected up to 3.4.1 Fixed in — No fix listed CNA
  • discordrb (RubyGems) Vendor— Affected before 3.4.3 Fixed in 3.4.3 Patch available GHSA-8832-4mm5-x2r6

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:discordrb_project:discordrb:*:*:*:*:*:ruby:*:*before 2023-03-08VulnerableDiscordrb Project
  • cpe:2.3:a:discordrb_project:discordrb:*:*:*:*:*:ruby:*:* Versions before 2023-03-08 Vulnerable ·Discordrb Project

Remediation

  • Fix · GHSA-8832-4mm5-x2r6 discordrb (RubyGems) Fixed in 3.4.3 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-28102
  2. 2026-10-03 Alias added: GHSA-8832-4mm5-x2r6

References

Exploit 1

Patch 1

Advisory 2

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences