2033198 - Perma [tier2] wpt backlog | TEST-UNEXPECTED-PASS /upgrade-insecure-requests/gen/iframe-blank-inherit.meta/unset/iframe-tag.https.html

Status: RESOLVED FIXED

(Core :: DOM: Security, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: asilaghi [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=560969381&repo=mozilla-central&task=RoU_q0P1QbWoO9ncrG3PDQ.0
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/RoU_q0P1QbWoO9ncrG3PDQ/runs/0/artifacts/public/logs/live_backing.log

---

[task 2026-04-18T09:38:38.346+00:00] 09:38:38     INFO - TEST-PASS | /upgrade-insecure-requests/gen/iframe-blank-inherit.meta/unset/iframe-tag.https.html | Upgrade-Insecure-Requests: Expects blocked for iframe-tag to cross-http-downgrade origin and downgrade redirection from https context.
[task 2026-04-18T09:38:38.346+00:00] 09:38:38     INFO - TEST-PASS | /upgrade-insecure-requests/gen/iframe-blank-inherit.meta/unset/iframe-tag.https.html | Upgrade-Insecure-Requests: Expects blocked for iframe-tag to cross-http-downgrade origin and no-redirect redirection from https context.
[task 2026-04-18T09:38:38.346+00:00] 09:38:38     INFO - TEST-UNEXPECTED-PASS | /upgrade-insecure-requests/gen/iframe-blank-inherit.meta/unset/iframe-tag.https.html | Upgrade-Insecure-Requests: Expects blocked for iframe-tag to cross-https origin and downgrade redirection from https context. - expected TIMEOUT
[task 2026-04-18T09:38:38.346+00:00] 09:38:38     INFO - TEST-INFO | expected TIMEOUT
[task 2026-04-18T09:38:38.347+00:00] 09:38:38     INFO - 
[task 2026-04-18T09:38:38.347+00:00] 09:38:38     INFO - TEST-UNEXPECTED-PASS | /upgrade-insecure-requests/gen/iframe-blank-inherit.meta/unset/iframe-tag.https.html | Upgrade-Insecure-Requests: Expects blocked for iframe-tag to same-http-downgrade origin and downgrade redirection from https context. - expected NOTRUN
[task 2026-04-18T09:38:38.347+00:00] 09:38:38     INFO - TEST-INFO | expected NOTRUN
[task 2026-04-18T09:38:38.348+00:00] 09:38:38     INFO - 
[task 2026-04-18T09:38:38.348+00:00] 09:38:38     INFO - TEST-UNEXPECTED-PASS | /upgrade-insecure-requests/gen/iframe-blank-inherit.meta/unset/iframe-tag.https.html | Upgrade-Insecure-Requests: Expects blocked for iframe-tag to same-http-downgrade origin and no-redirect redirection from https context. - expected NOTRUN
[task 2026-04-18T09:38:38.348+00:00] 09:38:38     INFO - TEST-INFO | expected NOTRUN
[task 2026-04-18T09:38:38.348+00:00] 09:38:38     INFO - 
[task 2026-04-18T09:38:38.348+00:00] 09:38:38     INFO - TEST-UNEXPECTED-PASS | /upgrade-insecure-requests/gen/iframe-blank-inherit.meta/unset/iframe-tag.https.html | Upgrade-Insecure-Requests: Expects blocked for iframe-tag to same-https origin and downgrade redirection from https context. - expected NOTRUN
[task 2026-04-18T09:38:38.348+00:00] 09:38:38     INFO - TEST-INFO | expected NOTRUN
[task 2026-04-18T09:38:38.349+00:00] 09:38:38     INFO - TEST-UNEXPECTED-OK | /upgrade-insecure-requests/gen/iframe-blank-inherit.meta/unset/iframe-tag.https.html | expected TIMEOUT
[task 2026-04-18T09:38:38.349+00:00] 09:38:38     INFO - TEST-INFO expected TIMEOUT | took 6379ms

Comment 1

[BugBot [:suhaib / :marco]]

Set release status flags based on info from the regressing bug 2025280

:maltejur, since you are the author of the regressor, bug 2025280, could you take a look?

For more information, please visit BugBot documentation.

Comment 2

[Intermittent Failures Robot]

22 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-central: 17
• try: 5

Table

	no_variant	nofis
android-x86_64/opt		2
linux2404-x86_64/debug	11
linux2404-x86_64/opt	3
macosx1470-x86_64/opt	2
windows11-x86_64/opt	4

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2033198&startday=2026-04-18&endday=2026-04-18&tree=all

Comment 3

[Intermittent Failures Robot]

42 failures were associated with this bug in the last 7 days.

This failure happened more than 30 times this week! Resolving this bug is a high priority.

Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-central: 36
• try: 6

Table

	no_variant	nofis
android-x86_64/opt		6
linux2404-x86_64/debug	15
linux2404-x86_64/opt	6
macosx1470-x86_64/opt	5
windows11-x86_64/opt	10

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2033198&startday=2026-04-13&endday=2026-04-19&tree=all

Comment 4

[Intermittent Failures Robot]

29 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-central: 26
• mozilla-beta: 2
• try: 1

Table

	no_variant	nofis
android-x86_64/opt		6
linux2404-x86_64/debug	7
linux2404-x86_64/opt	4
macosx1470-x86_64/opt	4
windows11-x86_64/opt	8

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2033198&startday=2026-04-20&endday=2026-04-20&tree=all

Comment 5

[Malte Jürgens [:maltejur]]

Attachment: Bug 2033198 - Update test expectations for upgrade-insecure-requests/gen/iframe-blank-inherit.meta/unset/iframe-tag.https.html WPT r?simonf

This test is still broken across all platforms, but the recent changes in
Bug 2025280 have changed our test expectation slightly.

Comment 6

[Intermittent Failures Robot]

19 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-central: 12
• mozilla-beta: 5
• try: 2

Table

	no_variant	nofis
android-x86_64/opt		2
linux2404-x86_64/debug	9
linux2404-x86_64/opt	2
macosx1470-x86_64/opt	2
windows11-x86_64/opt	4

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2033198&startday=2026-04-21&endday=2026-04-21&tree=all

Comment 7

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/77986f881362
https://hg.mozilla.org/integration/autoland/rev/f3a0fff95cdb
Update test expectations for upgrade-insecure-requests/gen/iframe-blank-inherit.meta/unset/iframe-tag.https.html WPT r=simonf

Comment 8

[BugBot [:suhaib / :marco]]

Set release status flags based on info from the regressing bug 2025280

Comment 9

[Intermittent Failures Robot]

18 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-central: 13
• mozilla-beta: 5

Table

	no_variant	nofis
android-x86_64/opt		3
linux2404-x86_64/debug	7
linux2404-x86_64/opt	2
macosx1470-x86_64/opt	2
windows11-x86_64/opt	4

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2033198&startday=2026-04-22&endday=2026-04-22&tree=all

Comment 10

[Cosmin Sabou [:CosminS]]

https://hg.mozilla.org/mozilla-central/rev/f3a0fff95cdb

Comment 11

[BugBot [:suhaib / :marco]]

The patch landed in nightly and beta is affected.
:maltejur, is this bug important enough to require an uplift?

• If yes, please nominate the patch for beta approval.
  • See https://wiki.mozilla.org/Release_Management/Requesting_an_Uplift for documentation on how to request an uplift.
• If no, please set status-firefox151 to wontfix.

For more information, please visit BugBot documentation.

Comment 12

[Phabricator Automation]

firefox-beta Uplift Approval Request

• User impact if declined/Reason for urgency: This is just fixing test expectations
• Code covered by automated testing?: yes
• Fix verified in Nightly?: yes
• Needs manual QE testing?: no
• Steps to reproduce for manual QE testing: n/a
• Risk associated with taking this patch: low
• Explanation of risk level: This is just fixing test expectations
• String changes made/needed?: No
• Is Android affected?: no

Comment 13

[Malte Jürgens [:maltejur]]

Attachment: Bug 2033198 - Update test expectations for upgrade-insecure-requests/gen/iframe-blank-inherit.meta/unset/iframe-tag.https.html WPT

This test is still broken across all platforms, but the recent changes in
Bug 2025280 have changed our test expectation.

Original Revision: https://phabricator.services.mozilla.com/D295603

Comment 14

[Pulsebot]

https://github.com/mozilla-firefox/firefox/commit/8c65ee86c972
https://hg.mozilla.org/releases/mozilla-beta/rev/5c89b8ff3da6

Comment 15

[Intermittent Failures Robot]

67 failures were associated with this bug in the last 7 days.
This is the #39 most frequent failure this week.

This failure happened more than 30 times this week! Resolving this bug is a high priority.

Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-central: 51
• mozilla-beta: 13
• try: 3

Table

	no_variant	nofis
android-x86_64/opt		11
linux2404-x86_64/debug	24
linux2404-x86_64/opt	8
macosx1470-x86_64/opt	8
windows11-x86_64/opt	16

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2033198&startday=2026-04-20&endday=2026-04-26&tree=all