🛡️ Sentinel: [MEDIUM] Sanitize exceptions in logs by abhimehro · Pull Request #180 · abhimehro/ctrld-sync

abhimehro · 2026-02-09T10:56:19Z

Vulnerability:
Exception messages were sometimes logged directly without sanitization. If an exception (e.g., httpx.RequestError) contained a sensitive URL with a token in the query string or error details, it could be leaked into logs.

Fix:
Applied sanitize_for_log() to all exception variables logged via log.error and log.warning. This ensures any sensitive data within the exception message is redacted before output.

Verification:
Added tests/test_exception_logging.py which reproduces the issue by simulating an exception containing a secret token and verifying that the logged message is redacted.
Ran existing tests to ensure no regressions.

PR created automatically by Jules for task 231878360127877934 started by @abhimehro

- Wrapped exception objects in `sanitize_for_log()` before logging. - Prevents potential leakage of sensitive data (e.g., tokens in URLs) from exception messages. - Added regression test `tests/test_exception_logging.py`. Co-authored-by: abhimehro <84992105+abhimehro@users.noreply.github.com>

google-labs-jules · 2026-02-09T10:56:21Z

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trunk-io · 2026-02-09T10:56:23Z

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github-actions · 2026-02-09T10:56:31Z

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gemini-code-assist · 2026-02-09T10:56:36Z

Summary of Changes

Hello @abhimehro, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the application's security by implementing robust sanitization for exception messages before they are written to logs. By consistently redacting potentially sensitive information, such as API tokens or private URLs, from error and warning logs, it mitigates the risk of data leakage. The changes are validated by a new, dedicated test case that confirms the effectiveness of the sanitization process.

Highlights

Security Fix: Addressed a medium-severity vulnerability where exception messages could inadvertently leak sensitive data, such as tokens embedded in URLs, into application logs.
Log Sanitization Implementation: Applied the sanitize_for_log() function to all exception variables (e) passed to log.error and log.warning calls within main.py, ensuring sensitive information is redacted before logging.
New Test Coverage: Introduced a new test file, tests/test_exception_logging.py, to specifically verify that sensitive data within httpx.RequestError exceptions is correctly redacted from log output.

Changelog

main.py
- Modified multiple log.warning and log.error statements to wrap exception objects with sanitize_for_log(e) in functions like validate_folder_url, check_api_access, _fetch_folder_rules, and create_folder.
tests/test_exception_logging.py
- Added a new unit test file to verify that sensitive data (e.g., a secret token) within httpx.RequestError exceptions is properly redacted when logged.
- The test simulates an exception containing a secret and asserts that the logged message does not contain the secret but includes a [REDACTED] placeholder.

Activity

The pull request was automatically created by 'Jules' for a task initiated by @abhimehro.

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tests/test_exception_logging.py

main.py

                        all_rules.update(result)
                except Exception as e:
                    folder_id = future_to_folder[future]
-                    log.warning(f"Failed to fetch rules for folder ID {folder_id}: {e}")


tests/test_exception_logging.py

main.py

        except Exception as e:
            # We log error but don't stop the whole process;
            # individual folder failure shouldn't crash the sync
-            log.warning(f"Error fetching rules for folder {folder_id}: {e}")


main.py

                        all_rules.update(result)
                except Exception as e:
                    folder_id = future_to_folder[future]
-                    log.warning(f"Failed to fetch rules for folder ID {folder_id}: {e}")


main.py

@@ -1024,7 +1030,9 @@
                        )
                        return str(grp["PK"])


gemini-code-assist

Code Review

This pull request effectively addresses a security vulnerability by sanitizing exceptions before they are logged, preventing potential leakage of sensitive data. The changes are applied consistently across all relevant logging statements. The addition of a new test file, tests/test_exception_logging.py, is a great step to verify the fix and prevent future regressions. I have one suggestion to refactor the new test to use @patch decorators, which improves the test's structure and robustness. Overall, this is a valuable security improvement.

tests/test_exception_logging.py

Copilot

Pull request overview

This PR aims to prevent sensitive data leakage by ensuring exception messages are sanitized (via sanitize_for_log()) before being written to logs, and adds a regression test to confirm redaction behavior.

Changes:

Apply sanitize_for_log() to exceptions logged in several log.warning / log.error paths.
Add a new test (tests/test_exception_logging.py) to verify an exception containing a token is redacted when logged from check_api_access().

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
main.py	Sanitizes exception values in multiple log statements to reduce the risk of leaking secrets via exception messages.
tests/test_exception_logging.py	Adds a regression test asserting tokens inside an exception message are redacted in logs.

Copilot · 2026-02-09T10:59:18Z

main.py

+            log.error(f"API Access Check Failed ({code}): {sanitize_for_log(e)}")
        return False
    except httpx.RequestError as e:
-        log.error(f"Network Error during access check: {e}")
+        log.error(f"Network Error during access check: {sanitize_for_log(e)}")
        return False


This change sanitizes exceptions in a few places, but main.py still has log statements that interpolate the raw exception ({e}) without sanitize_for_log, so sensitive URLs/tokens can still leak (e.g., the retry warning in _retry_request, the cache warmup Failed to pre-fetch ...: {e} warning, and the Could not extract ID ...: {e} debug log). To fully address the vulnerability described in the PR, sanitize those remaining exception logs as well (either by wrapping the exception with sanitize_for_log(...) or logging a sanitized str(e) via logger args).

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

github-actions · 2026-02-09T11:29:15Z

👋 Development Partner is reviewing this PR. Will provide feedback shortly.

Copilot

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

Copilot · 2026-02-09T11:31:34Z

main.py

+            log.error(f"API Access Check Failed ({code}): {sanitize_for_log(e)}")
        return False
    except httpx.RequestError as e:
-        log.error(f"Network Error during access check: {e}")
+        log.error(f"Network Error during access check: {sanitize_for_log(e)}")
        return False


PR description says all exceptions logged via log.error/log.warning are now sanitized, but main.py still logs raw exceptions in a few places (e.g., _retry_request() warning and warm_up_cache() warning, plus a create_folder() debug). That means sensitive URLs/tokens can still leak in logs; either extend the fix to those remaining log lines or narrow the PR description to match what’s actually covered.

Copilot · 2026-02-09T11:31:34Z

main.py

+                log.warning(
+                    f"Failed to resolve/validate domain {hostname}: {sanitize_for_log(e)}"
+                )
                return False

    except Exception as e:
-        log.warning(f"Failed to validate URL {sanitize_for_log(url)}: {e}")
+        log.warning(
+            f"Failed to validate URL {sanitize_for_log(url)}: {sanitize_for_log(e)}"
+        )


Only check_api_access() has a regression test for exception-message redaction. The new/updated exception sanitization in validate_folder_url(), _fetch_folder_rules(), and create_folder() isn’t covered by tests (no tests assert these log messages are redacted), so it’s easy for future changes to reintroduce secret leakage in those paths. Add targeted tests that raise exceptions containing a secret/token and assert the logged message contains "[REDACTED]" and not the secret.

…ve tests Co-authored-by: abhimehro <84992105+abhimehro@users.noreply.github.com>

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Co-authored-by: abhimehro <84992105+abhimehro@users.noreply.github.com>

github-actions · 2026-02-09T12:31:09Z

👋 Development Partner is reviewing this PR. Will provide feedback shortly.

tests/test_exception_logging.py

+    @patch('main.log')
+    @patch('main.socket.getaddrinfo')
+    def test_validate_folder_url_redacts_exception(
+        self, mock_getaddrinfo, mock_log


tests/test_exception_logging.py

+
+        # Mock _api_get to succeed for root but fail for folder rules
+        with patch('main._api_get') as mock_api_get:
+            def api_get_side_effect(client_arg, url):


tests/test_exception_logging.py

+    @patch('main.log')
+    @patch('main._api_post')
+    @patch('main._api_get')
+    def test_create_folder_redacts_exception(


tests/test_exception_logging.py

+    @patch('main._api_post')
+    @patch('main._api_get')
+    def test_create_folder_redacts_exception(
+        self, mock_api_get, mock_api_post, mock_log


tests/test_exception_logging.py

+        )
+
+        # Create a failing request function
+        def failing_request():


tests/test_exception_logging.py

+
+        # Mock _api_get to succeed for root but fail for folder rules
+        with patch('main._api_get') as mock_api_get:
+            def api_get_side_effect(client_arg, url):


tests/test_exception_logging.py

+
+        # Action
+        try:
+            main._retry_request(failing_request, max_retries=2, delay=0.01)


main.py

tests/test_exception_logging.py

+        # Mock _api_get to succeed for root but fail for folder rules
+        with patch('main._api_get') as mock_api_get:
+            def api_get_side_effect(client_arg, url):
+                if url.endswith("/rules"):


tests/test_exception_logging.py

+    @patch('main.log')
+    @patch('main._api_post')
+    @patch('main._api_get')
+    def test_create_folder_redacts_exception(


main.py

+            log.error(f"API Access Check Failed ({code}): {sanitize_for_log(e)}")
        return False
    except httpx.RequestError as e:
-        log.error(f"Network Error during access check: {e}")


main.py

+            log.debug(
+                f"Could not extract ID from POST response: "
+                f"{sanitize_for_log(e)}"
+            )


main.py

tests/test_exception_logging.py

+
+        # Mock _api_get to succeed for root but fail for folder rules
+        with patch('main._api_get') as mock_api_get:
+            def api_get_side_effect(client_arg, url):


tests/test_exception_logging.py

+
+        # Action
+        try:
+            main._retry_request(failing_request, max_retries=2, delay=0.01)


Copilot AI review requested due to automatic review settings February 9, 2026 10:56

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Update tests/test_exception_logging.py

9fd79e4

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Copilot AI review requested due to automatic review settings February 9, 2026 11:29

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abhimehro assigned abhimehro and Copilot Feb 9, 2026

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Initial plan

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Copilot AI mentioned this pull request Feb 9, 2026

Address PR #180 review feedback: Complete exception sanitization coverage #181

Merged

24 tasks

Copilot AI and others added 5 commits February 9, 2026 11:44

Apply PR #180 review feedback - sanitize all exception logs and impro…

01b3565

…ve tests Co-authored-by: abhimehro <84992105+abhimehro@users.noreply.github.com>

Update tests/test_exception_logging.py

1e697af

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Update tests/test_exception_logging.py

f2eb41d

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Fix test_create_folder_redacts_exception to properly verify sanitization

8879fc2

Co-authored-by: abhimehro <84992105+abhimehro@users.noreply.github.com>

Merge pull request #181 from abhimehro/copilot/apply-review-comments

fa5152f

abhimehro merged commit a438731 into main Feb 9, 2026
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abhimehro deleted the sentinel-log-sanitization-231878360127877934 branch February 9, 2026 12:32

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