eBay Sponsored links. Shadow DOM

[JSCFORCE]

Prerequisites

• [X] I verified that this is not a filter list issue. Report any issues with filter lists or broken website functionality in the uAssets issue tracker.
• [X] This is not a support issue or a question. For any support, questions or help, visit /r/uBlockOrigin.
• [X] I performed a cursory search of the issue tracker to avoid opening a duplicate issue.
• [X] The issue is not present after disabling uBO in the browser.
• [X] I checked the documentation to understand that the issue I am reporting is not normal behavior.

I tried to reproduce the issue when...

• [X] uBO is the only extension.
• [X] uBO uses default lists and settings.
• [X] using a new, unmodified browser profile.

Description

eBay uses the shadow DOM to mark certain listings as SPONSORED.

we can't remove them since we can't target the shadow DOM.

Since sites don't get much bigger than this is is time to add support for a :shadow-root(...) operator?

A specific URL where the issue occurs.

https://www.ebay.com/sch/i.html?_from=R40&_nkw=houses&_sacat=0

Steps to Reproduce

Any attempt to target or distinguish the sponsored listings from the normal ones fail.

Expected behavior

Normally removing an ad would be a snap but not when the CSS is hidden from us.

Actual behavior

Can't remove the sponsored ads with uBlock origin in its current form.

uBO version

1.44.4

Browser name and version

Vivaldi 5.4.2753.51

Operating System and version

Windows 10.0.19044.2006

[krystian3w]

But how long?

[JSCFORCE]

doesn't work here: https://www.ebay.com/sch/i.html?_from=R40&_nkw=ti-85&_sacat=0&rt=nc&LH_ItemCondition=3

sigh, what a mess.

[stephenhawk8054]

doesn't work here: https://www.ebay.com/sch/i.html?_from=R40&_nkw=ti-85&_sacat=0&rt=nc&LH_ItemCondition=3

sigh, what a mess.

It's because of the &LH_ItemCondition=3 at the end.

Test

www.ebay.com##li.s-item a.s-item__link[href]:matches-attr(href="/%3A\w{12}(&.+)?$/"):upward(li.s-item)

This takes care most of the sponsored products except few products at the top in some searches for me.

---

@gwarser idea works for me too

www.ebay.com##li.s-item .s-item__detail--primary span[role="text"] > span:matches-css(width: /59\.[5-9]/):upward(li.s-item):remove()

But at this point, it just depends on each person's DOM.

[MasterKia]

Can this help? https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/dom/openOrClosedShadowRoot

[krystian3w]

I think nope:

Browser name and version

Vivaldi 5.4.2753.51

I don't know nothing as Vivalidi added support directly installing Moz://a XPI.

[rileyvel]

None of the above still works after eBay's updates. However, window.find can be used to infiltrate closed shadow DOMs - see https://book.hacktricks.xyz/pentesting-web/xss-cross-site-scripting/shadow-dom

I created a proof-of-concept that can be used as a userscript to remove eBay sponsored search results: https://gist.github.com/rileyvel/7162ed1049420e68c0913e52d220366b Works on Chromium and Firefox, but not Safari.

Maybe ublock origin can use this to enforce :has-text filters globally? Otherwise, filter lists can be asked to provide selectors of elements expected to host closed shadow roots (in eBay's case, span.s-item__sep > div). chrome.dom.openOrClosedShadowRoot can then be used to create "portals" between the light DOM and shadow DOM, and cosmetic filters can pass right through.

[JSCFORCE]

Amazing! Thank you for your detective work and making the script. I can confirm it does indeed work.

I would like to subscribe to your newsletter sir!

:)

[gorhill]

Please evaluate whether issue can be closed with https://github.com/gorhill/uBlock/commit/52b46eb98bedfa746206e89ac016734cbbed092a.

[krystian3w]

They can do the creating shadow DOM-s/roots (as childs) in a loop to avoid single exposure.