History of Advisories

[Samk1710]

Right now, when an advisory is updated upstream, we create a new record in the db(mark it with is_latest=True) on the subsequent importer run but there is no way for a user to see what actually changed over time.

• At first we need a Way Back Machine mimic for advisories to see a advisory snapshot exactly how it was at that point in time
• We display the diffs between versions directly in the UI (if a severity score changes, a new reference is added, or a package is removed, users should be able to see exactly when and what happened at a glance)

Suggested UX:

• Add a "History" tab to the advisory detail page.
• Show a chronologically ordered list of versions of the advisory
• Allow users to click into a specific historical snapshot to view the advisory exactly as it was at that point in time, just like a way Back Machine
• Need a summary/diff of what changed for a quick overview

Excluding changes summary and epss score(can be tracked after merge of #2328 ; also since it changes everyday) might be good.

[Samk1710]

Ref: https://github.com/github/advisory-database/commits/main/advisories/github-reviewed/2026/02/GHSA-72hv-8253-57qq/GHSA-72hv-8253-57qq.json

A similar function can be used to find the diff:

vulnerablecode/vulnerabilities/utils.py

Line 644 in 77e9052

def compute_content_id(advisory_data):