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GHSA-r8g4-86fx-92mq

MediumCVSS 6.5 / 10
Published Feb 4, 2026·Last modified Feb 4, 2026
Affected Components(0)

No affected components available

Description

Summary

The isValidMedia() function in src/media/parse.ts allows arbitrary file paths including absolute paths, home directory paths, and directory traversal sequences. An agent can read any file on the system by outputting MEDIA:/path/to/file, exfiltrating sensitive data to the user/channel.

Details

Location: src/media/parse.ts:17-27

The path validation accepts dangerous patterns:

function isValidMedia(candidate: string, opts?: { allowSpaces?: boolean }) {
  if (candidate.startsWith("/")) return true;      // ALLOWS /etc/passwd
  if (candidate.startsWith("./")) return true;
  if (candidate.startsWith("../")) return true;    // ALLOWS ../../etc/passwd
  if (candidate.startsWith("~")) return true;      // ALLOWS ~/secrets
  return false;
}

No validation ensures the path is within a safe directory or is actually a media file.

PoC

Agent outputs any of:

MEDIA:/etc/passwd
MEDIA:~/.ssh/id_rsa
MEDIA:~/.aws/credentials
MEDIA:../../../etc/passwd

The file contents are rendered/sent to the requesting user or channel.

Impact

  • Read ANY file accessible to the agent user
  • Exfiltrate SSH keys (~/.ssh/id_rsa)
  • Steal cloud credentials (~/.aws/credentials)
  • Access API keys (.env, config.json)
  • Read system files (/etc/passwd, /etc/shadow)

Note: PR #4930 contains a fix but is NOT MERGED - production is vulnerable.

Risk Scores
Base Score
6.5

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information.

Threat Intelligence
6.0

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.74%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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