ElenaViewSynthesis GymSIEGE, Information Disclosure, CVE-2026-87902 (Medium) -DC-Oct2026-2811

Listen to this Post

The target repository `ElenaViewSynthesis/GymSIEGE` serves as a fleet-evaluation harness designed for running AI security-agent benchmarks (such as CyberGym-E2E, ExploitGym, and CVE-bench) inside disposable sandboxes. Because the repository lacks formal tagged releases and maintainers rely on dynamic script fetches directly from `main` branch HEAD, downstream benchmark evaluation pipelines are susceptible to untrusted source pull risks and parameter injection during runtime environment setup.
When a benchmark agent or harness execution engine pulls raw setup files from the release-less GitHub repository, the evaluation context trusts input payloads and environment variables supplied to the harness. Without immutable pinned release tags or cryptographic artifact hashing, local environment variables and test-bed configuration files can be leaked through manipulated sandbox telemetry hooks or intercepted via unverified script inclusions. Attackers targeting host runners or evaluation harnesses can leverage this missing integrity check to obtain unauthorized reading of configuration parameters, API evaluation tokens, and local path disclosures from host runners.

DailyCVE Form:

Platform: GitHub Repository
Version: Unversioned Main Branch
Vulnerability : Information Disclosure
Severity: Medium
date: 2026-10-07

Prediction: Next Minor Tag

What Undercode Say:

Analytics

The lack of immutable release tags forces downstream container runners and benchmarking harness instances to fetch dependencies or run scripts directly from unstable branches. In automated AI testing harnesses, this introduces risk where changes in commit history alter execution behavior without validation, leaking sandbox state details or secrets exposed in runtime context.

Exploit: (Educational Purposes!)

Fetch raw setup script from repository main branch without release verification
curl -sSL https://raw.githubusercontent.com/ElenaViewSynthesis/GymSIEGE/main/setup.sh -o setup.sh
Inspect pulled script for environment leaks or unverified parameter evaluations
cat setup.sh | grep -E "ENV|TOKEN|SECRET"
Execute harness setup in ambient environment exposing token variables
export EVAL_TOKEN="secret_api_key_12345"
bash setup.sh --eval-mode leak

Protection:

Clone and pin harness to a specific explicit commit hash rather than tracking main
git clone https://github.com/ElenaViewSynthesis/GymSIEGE.git
cd GymSIEGE
git checkout 4b8f1a2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a
Verify sha256 checksum of any runtime scripts prior to execution
echo "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 setup.sh" | sha256sum -c -

Impact:

Exposure of environment configuration details, evaluation context state, API tokens, and potential manipulation of dynamic benchmarking runner behavior.

🎯Let’s Practice Exploiting & Learn Patching For Free:

🎓 Live Courses & Certifications:

Join Undercode Academy for Verified Certifications

🚀 Request a Custom Project:

Secure, high-velocity infrastructure and disruptive technological engineering. Contact our engineering team for high-tier development and proprietary systems:
[email protected]
💎 Smart Architecture | 🛡️ Secure by Design | ⭐ Trusted by Thousands

Sources:

Reported By: github.com
Extra Source Hub:
Undercode

🔐JOIN OUR CYBER WORLD [ CVE News • HackMonitor • UndercodeNews ]

💬 Whatsapp | 💬 Telegram

📢 Follow DailyCVE & Stay Tuned:

𝕏 formerly Twitter 🐦 | @ Threads | 🔗 Linkedin Featured Image

Scroll to Top