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PYSEC-2026-2427

MediumCVSS 6.7 / 10
Published Jul 13, 2026·Last modified Jul 13, 2026
Affected Components(0)

No affected components available

Description

A source code audit led to the discovery of three significant security vulnerabilities in the trestle/core/remote/cache.py module.

Finding 1 (Critical): SSRF (CWE-918) The HTTPSFetcher._do_fetch() method passes a user-supplied URL directly to requests.get() without validation. This allows an attacker to perform Server-Side Request Forgery, targeting internal services or cloud metadata endpoints (e.g., 169.254.169.254).

Per rule 4.2.11 of the CVE CNA rules Finding 1 will be addressed in this advisory, while findings 2 & 3 will be addressed in separate advisories:

Multiple Path Traversal Vulnerabilities in Remote Fetching Subsystem

Finding 2 & 3 (High/Medium): Path Traversal (CWE-22) The caching logic for HTTPSFetcher and LocalFetcher fails to sanitize URI paths, allowing for arbitrary file reads via file:// or writing cached files outside the intended directory.

Impact: > These vulnerabilities can be chained to exfiltrate sensitive cloud credentials or compromise CI/CD environments.

Reproduction: > Please see the attached poc_ssrf_and_path_traversal.py and terminal_output.txt. 13 exploit vectors have been verified locally.

compliance-trestle_audit_2026-03-30.pdf poc_ssrf_and_path_traversal.py terminal_output.txt

Risk Scores
Base Score
6.7

The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a low impact on the integrity of the data.

Threat Intelligence
6.1

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

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

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

Related Vulnerabilities
  • CVE-2026-46380
    Alias

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Medium severity
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