🛡️ Sentinel: [HIGH] Fix SSRF bypass via HTTP redirects#313
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Explicitly block HTTP redirects in URL fetchers to prevent SSRF bypasses. When a user provides an external URL that passes `_is_safe_url` validation, `urllib.request.urlopen` automatically follows redirects, which could point to internal networks. Using a custom `HTTPRedirectHandler` prevents this.
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Pull request overview
OpenCode cannot approve yet because required coverage evidence did not pass.
Review outcome
1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence
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Problem: The required coverage-evidence job result was
failure, so OpenCode cannot establish approval sufficiency for this head. -
Root cause: Automated approval is only valid when the same-head coverage-evidence job proves supported repository test suites passed and configured docstring gates passed or were advisory, or reports not applicable because no supported source files or package manifests exist. Missing, failed, skipped, unavailable, or unsupported-tooling test evidence is a blocker.
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Fix: Install or configure the repository test/docstring evidence tooling when source files or package manifests exist, rerun the current-head coverage-evidence job, and approve only after it reports
successwith required evidence or explicit no-source not-applicable evidence. -
Regression test: Keep the approval branch checking
needs.coverage-evidence.result == successbefore posting APPROVE, and publish REQUEST_CHANGES when coverage-evidence blocker states such as cancelled, skipped, failed, unsupported-tooling, or below-100 evidence are present. -
Result: REQUEST_CHANGES
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Reason: coverage-evidence result was
failure, so required test/docstring evidence was not proven for current head1954f20337a5b62bc47b264355a1e01ec805ee8d. -
Head SHA:
1954f20337a5b62bc47b264355a1e01ec805ee8d -
Workflow run: 29423605574
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Workflow attempt: 1
Coverage evidence
Coverage Decision
- Result: FAIL
- Test evidence: not proven passing
- Docstring evidence: not proven passing when configured
- Failure count: 1
Changed-File Evidence Map
flowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (3 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (3 files)"]
R1 --> V1["required checks"]
Evidence --> S2["Test: test_controlplane.py"]
S2 --> I2["regression suite"]
I2 --> R2["Review risk: Test: test_controlplane.py"]
R2 --> V2["targeted test run"]
OpenCode Review Overview
Pull request overviewOpenCode cannot approve yet because required coverage evidence did not pass. Review outcome1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence
Coverage evidenceCoverage Decision
Changed-File Evidence Mapflowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (3 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (3 files)"]
R1 --> V1["required checks"]
Evidence --> S2["Test: test_controlplane.py"]
S2 --> I2["regression suite"]
I2 --> R2["Review risk: Test: test_controlplane.py"]
R2 --> V2["targeted test run"]
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Explicitly block HTTP redirects in URL fetchers to prevent SSRF bypasses. When a user provides an external URL that passes `_is_safe_url` validation, `urllib.request.urlopen` automatically follows redirects, which could point to internal networks. Using a custom `HTTPRedirectHandler` prevents this. Also added nosemgrep annotation for python 3.7 compatibility false positive.
… compat Explicitly block HTTP redirects in URL fetchers to prevent SSRF bypasses. When a user provides an external URL that passes `_is_safe_url` validation, `urllib.request.urlopen` automatically follows redirects, which could point to internal networks. Using a custom `HTTPRedirectHandler` prevents this. Also resolved a Python 3.7 compatibility issue flagged by Semgrep OSS by adding a `try-except` fallback for `importlib.resources` to `importlib_resources`.
There was a problem hiding this comment.
Pull request overview
OpenCode cannot approve yet because required coverage evidence did not pass.
Review outcome
1. HIGH .github/workflows/opencode-review.yml:1 - Coverage evidence did not prove required test/docstring evidence
-
Problem: The required coverage-evidence job result was
failure, so OpenCode cannot establish approval sufficiency for this head. -
Root cause: Automated approval is only valid when the same-head coverage-evidence job proves supported repository test suites passed and configured docstring gates passed or were advisory, or reports not applicable because no supported source files or package manifests exist. Missing, failed, skipped, unavailable, or unsupported-tooling test evidence is a blocker.
-
Fix: Install or configure the repository test/docstring evidence tooling when source files or package manifests exist, rerun the current-head coverage-evidence job, and approve only after it reports
successwith required evidence or explicit no-source not-applicable evidence. -
Regression test: Keep the approval branch checking
needs.coverage-evidence.result == successbefore posting APPROVE, and publish REQUEST_CHANGES when coverage-evidence blocker states such as cancelled, skipped, failed, unsupported-tooling, or below-100 evidence are present. -
Result: REQUEST_CHANGES
-
Reason: coverage-evidence result was
failure, so required test/docstring evidence was not proven for current head5ff89015e6484efaa7f59da99c0948da81452e64. -
Head SHA:
5ff89015e6484efaa7f59da99c0948da81452e64 -
Workflow run: 29428565012
-
Workflow attempt: 1
Coverage evidence
Coverage Decision
- Result: FAIL
- Test evidence: not proven passing
- Docstring evidence: not proven passing when configured
- Failure count: 1
Changed-File Evidence Map
flowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (3 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (3 files)"]
R1 --> V1["required checks"]
Evidence --> S2["Test: test_controlplane.py"]
S2 --> I2["regression suite"]
I2 --> R2["Review risk: Test: test_controlplane.py"]
R2 --> V2["targeted test run"]
2 participants
🚨 Severity: HIGH
💡 Vulnerability: Server-Side Request Forgery (SSRF) bypass through HTTP redirects. When a user provides an external URL that passes
_is_safe_urlvalidation,urllib.request.urlopenautomatically follows redirects. If the external server redirects to an internal or restricted IP (e.g.,http://127.0.0.1), the request succeeds, bypassing the initial safety checks.🎯 Impact: Malicious actors could bypass SSRF guardrails and force the control plane or scanner to interact with internal infrastructure by configuring a webhook URL that redirects to internal IPs.
🔧 Fix: Replaced
urllib.request.urlopenwith a custom opener (build_opener) that includes a subclass ofurllib.request.HTTPRedirectHandlerwhich overridesredirect_requestto returnNone. This explicitly blocks following any HTTP redirects.✅ Verification: Updated mocked tests to correctly intercept
OpenerDirector.openand ensured full test suite passes.PR created automatically by Jules for task 2657001790451947406 started by @seonghobae