Accessibility scanner action flags GitHub's own /pages/auth infrastructure page (Actions)

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#210 3 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
48/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Quiet
Tech stack
typescript
Domain
accessibility, ci-cd

Research direction

Start with the attached gh-a11y-scanner.yml and the workflow logs to trace how /pages/auth is discovered, scanned, and reported. Check the scanner's URL-scope or exclusion configuration and reproduce the false positive if possible. Done means the GitHub infrastructure page is handled without user-created fixes, either through scanner behavior or documented configuration.

Written by the indexing model from the issue text.

Description

When running the scanner action on a private GitHub Pages site, the scanner flags an axe page-has-heading-one violation on the URL /pages/auth. This page is GitHub's own built-in authentication page (the login gate for private GitHub Pages sites), not a page a user can author or control.

The scanned element contains attributes like data-turbo-loaded, data-color-mode, data-a11y-animated-images, and js-focus-visible, which confirm it is GitHub's own UI, not user content. We cannot fix this violation because we do not own the page.

In our case, this triggered 30 duplicate pull requests in our repository (as we ran on a list of URLs), all attempting to create a pages/auth.html file that has no effect on the actual scanned page.

Request:

Please either

  • (1) fix the accessibility violation on GitHub's own /pages/auth page, or
  • (2) update the github/accessibility-scanner action to exclude GitHub-infrastructure URLs from its scan scope by default, or
  • document how to configure URL exclusions for these pages

The private repo with CoPilot's attempts to fix the issue:
https://github.com/mcdonalds-corp-new/ally/pull/84

URL of the workflow run:
https://github.com/mcdonalds-corp-new/ally/actions/runs/24263521708/job/70852992850

Error message:
Set issue Accessibility issue: Heading levels should only increase by one on /pages/auth (mcdonalds-corp-new/ally#25) state to closed Set issue Accessibility issue: Page should contain a level-one heading on /pages/auth (mcdonalds-corp-new/ally#26) state to closed

Workflow file and workflow run log attached.

gh-a11y-scanner.yml

logs_64167249977.zip

Dominant language
TypeScript
Stars
374
Forks
42
Avg merge
1d 9h
Merged PRs (30d)
10

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