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Patched in v0.2.0+
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HIGH · CVSS 7.8GHSA-92f2-4677-rmvhCVE-2026-38291Fixed in v0.2.0+

Environment Secrets Leakage via /proc/self/environ & Process Inspection in AI Coding Agents

Component: AgentShield Process Interceptor (Kernel Sandbox)·Published: November 3, 2026
Base Score
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Attack Surface & Threat Vector

Autonomous AI agents executing bash commands (e.g. via Claude Code, Cursor, Windsurf) can execute 'cat /proc/self/environ', 'cat /proc/$PID/environ', or python process inspection scripts to dump all environment variables passed down from the parent shell. In unshielded environments, AWS_SECRET_ACCESS_KEY, OPENAI_API_KEY, and corporate DB passwords are automatically read into the agent's context window.

Root Cause Analysis

Default container and subshell environments expose Linux/UNIX virtual pseudo-filesystems (/proc, /sys) with inherited read permissions for host diagnostic parity, failing to treat volatile kernel process descriptors as secret exfiltration vectors.

Mitigation & Architecture Fix

AgentShield v0.2.0+ introduces an in-memory Landlock/Seatbelt virtualized /proc interceptor. Any syscall reading /proc/*/environ, /proc/*/cmdline, or inspectable process memory maps is dynamically intercepted, masked with deterministic [REDACTED_SECRET] tokens, and logged to the security audit trail.

Affected Releases: < 0.2.0
Patched Releases: v0.2.0+ (npm & brew)
Upgrade Command: npm install -g @ritualdev-lab/agentshield@latest
Independent Verification Test
$npx @ritualdev-lab/agentshield exec -- cat /proc/self/environ
[agentshield] Kernel sandbox interceptor active (Profile: Landlock Strict)
[intercept:proc] Trapped read request on /proc/self/environ (FD 3)
[redactor] 14 environment secrets identified and masked with HMAC tokens
AWS_SECRET_ACCESS_KEY=[REDACTED_TOKEN_7a8f9b] PATH=/usr/bin:/bin
[agentshield] Clean execution. 0 secrets exposed to agent context.
HIGH · CVSS 7.2GHSA-p3v4-5qw2-92rgCVE-2026-38292Fixed in v0.2.0+

CI Secret Gate Self-Neutering via Malicious Inverted Glob & Ignore Configuration Bypasses

Component: AgentShield CI/CD Audit Gate (GitHub Actions / GitLab CI)·Published: November 4, 2026
Base Score
7.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Attack Surface & Threat Vector

In automated pull request workflows, a malicious contributor or compromised dependency could submit a PR containing a custom .agentshieldignore or .gitignore with inverted glob patterns (e.g. '!secrets/' or '**/.*') designed to silence scanner alerts and self-neuter the CI security gate.

Root Cause Analysis

Directory-level ignore file parsing evaluated repository-supplied ignore rules with higher precedence than global security constraints, allowing local repository settings to suppress critical secret audits.

Mitigation & Architecture Fix

AgentShield v0.2.0+ enforces an Immutable Security Root Policy in CI modes (--strict). High-entropy secrets, PEM certificates, AWS credentials, and .env files are designated Unignorable Base Targets. Any PR attempt to modify or bypass these rules triggers a fatal security gate violation.

Affected Releases: < 0.2.0
Patched Releases: v0.2.0+ (npm & brew)
Upgrade Command: npm install -g @ritualdev-lab/agentshield@latest
Independent Verification Test
$npx @ritualdev-lab/agentshield ci --strict --base origin/main
[agentshield:ci] Loading root security policy from tamper-proof runner attestation
[check:ignore] Validating PR diff against immutable security baseline
[gate:passed] 0 self-neutering ignore patterns detected
[gate:passed] Immutable target rules (.env, *.pem, id_rsa) fully enforced
[status] CI gate passed with Exit Code 0
HIGH · CVSS 7.5GHSA-g5mq-fjr3-39qpCVE-2026-38293Fixed in v0.2.0+

Regular Expression Denial of Service (ReDoS) via Catastrophic Backtracking in Entropy Classifier

Component: AgentShield Pattern Matcher & Shannon Entropy Scanner·Published: November 4, 2026
Base Score
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Surface & Threat Vector

Adversarial prompts, obfuscated token sequences, or specially crafted source code files containing deeply nested, repetitive character patterns (e.g. repeated token delimiters) triggered catastrophic backtracking in custom secret regex engines, causing 100% CPU lockups and stalling agent pre-tool evaluation.

Root Cause Analysis

Use of non-deterministic finite automaton (NFA) regex engines in high-throughput stream scanning where nested quantifiers exhibit worst-case O(2^n) exponential time complexity.

Mitigation & Architecture Fix

AgentShield v0.2.0+ replaced the backtracking regex engine with a linear-time O(n) DFA scanner (RE2-compatible linear parser) and introduced a strict 25ms per-chunk circuit-breaker guard to prevent any computational lockups.

Affected Releases: < 0.2.0
Patched Releases: v0.2.0+ (npm & brew)
Upgrade Command: npm install -g @ritualdev-lab/agentshield@latest
Independent Verification Test
$npx @ritualdev-lab/agentshield test --dos-check
[benchmark] Injecting 100KB adversarial catastrophic backtracking payload...
[scanner] Linear DFA evaluation completed in 0.84ms (Target: < 25ms)
[circuit-breaker] Zero timeouts triggered. ReDoS vulnerability neutralized.
[result] Test passed: 100% linear time complexity verified.
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