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The vulnerability stems from the insecure CSP header 'frame-ancestors: self' set in BaseHandler.initialize. The commit 73e1375 reverted this by removing the header-setting code, confirming its role. The file path and function are explicitly shown in the diff, and the CWE-1021 mapping directly relates to improper frame restrictions. The high confidence comes from the direct correlation between the removed code and the vulnerability description.
| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| nbgrader | pip | = 0.9.4 | 0.9.5 |
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