Bug 2535908 - CVE-2026-75838 nextcloud: DOMPurify: Cross-Site Scripting via IN_PLACE sanitization [epel-all]
Summary: CVE-2026-75838 nextcloud: DOMPurify: Cross-Site Scripting via IN_PLACE saniti...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: nextcloud
Version: epel10
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Andrew Bauer
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["2e341d54-6b3b-4b3f-ba10-9...
Depends On:
Blocks: CVE-2026-75838
TreeView+ depends on / blocked
 
Reported: 2026-09-17 09:11 UTC by Ganesh
Modified: 2026-09-28 01:17 UTC (History)
2 users (show)

Fixed In Version: nextcloud-34.0.4-1.fc45 nextcloud-34.0.4-1.el10_4 nextcloud-34.0.4-1.el10_2 nextcloud-34.0.4-1.el10_3 nextcloud-34.0.4-1.fc44 nextcloud-34.0.4-1.fc43
Clone Of:
Environment:
Last Closed: 2026-09-28 00:17:01 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Ganesh 2026-09-17 09:11:56 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

DOMPurify before 3.4.13 contains a cross-site scripting vulnerability in IN_PLACE sanitization where element-removal hooks fail to neutralize detached subtrees. Attackers can supply HTML with event handlers on descendant elements that execute after sanitization completes, even though the returned root appears clean.

Comment 1 Fedora Update System 2026-09-19 20:08:58 UTC
FEDORA-2026-5c1bbb46c3 (nextcloud-34.0.4-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-5c1bbb46c3

Comment 2 Fedora Update System 2026-09-19 20:09:28 UTC
FEDORA-2026-362f1943c8 (nextcloud-34.0.4-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-362f1943c8

Comment 3 Fedora Update System 2026-09-19 20:10:27 UTC
FEDORA-2026-c495e95154 (nextcloud-34.0.4-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-c495e95154

Comment 4 Fedora Update System 2026-09-19 20:11:07 UTC
FEDORA-EPEL-2026-9f20c01514 (nextcloud-34.0.4-1.el10_4) has been submitted as an update to Fedora EPEL 10.4.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-9f20c01514

Comment 5 Fedora Update System 2026-09-19 20:19:16 UTC
FEDORA-EPEL-2026-d1bff6d983 (nextcloud-34.0.4-1.el10_2) has been submitted as an update to Fedora EPEL 10.2.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-d1bff6d983

Comment 6 Fedora Update System 2026-09-19 20:19:16 UTC
FEDORA-EPEL-2026-31615b47ef (nextcloud-34.0.4-1.el10_3) has been submitted as an update to Fedora EPEL 10.3.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-31615b47ef

Comment 7 Fedora Update System 2026-09-20 01:42:01 UTC
FEDORA-2026-c495e95154 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-c495e95154`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-c495e95154

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 8 Fedora Update System 2026-09-20 01:47:55 UTC
FEDORA-EPEL-2026-9f20c01514 has been pushed to the Fedora EPEL 10.4 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-9f20c01514

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 9 Fedora Update System 2026-09-20 02:02:09 UTC
FEDORA-2026-362f1943c8 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-362f1943c8`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-362f1943c8

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 10 Fedora Update System 2026-09-20 02:02:51 UTC
FEDORA-EPEL-2026-d1bff6d983 has been pushed to the Fedora EPEL 10.2 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-d1bff6d983

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 11 Fedora Update System 2026-09-20 02:08:03 UTC
FEDORA-EPEL-2026-31615b47ef has been pushed to the Fedora EPEL 10.3 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-31615b47ef

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 12 Fedora Update System 2026-09-20 02:24:51 UTC
FEDORA-2026-5c1bbb46c3 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-5c1bbb46c3`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-5c1bbb46c3

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 13 Fedora Update System 2026-09-28 00:17:01 UTC
FEDORA-2026-5c1bbb46c3 (nextcloud-34.0.4-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 14 Fedora Update System 2026-09-28 00:30:53 UTC
FEDORA-EPEL-2026-9f20c01514 (nextcloud-34.0.4-1.el10_4) has been pushed to the Fedora EPEL 10.4 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 15 Fedora Update System 2026-09-28 00:53:18 UTC
FEDORA-EPEL-2026-d1bff6d983 (nextcloud-34.0.4-1.el10_2) has been pushed to the Fedora EPEL 10.2 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 16 Fedora Update System 2026-09-28 01:11:28 UTC
FEDORA-EPEL-2026-31615b47ef (nextcloud-34.0.4-1.el10_3) has been pushed to the Fedora EPEL 10.3 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 17 Fedora Update System 2026-09-28 01:13:37 UTC
FEDORA-2026-362f1943c8 (nextcloud-34.0.4-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 18 Fedora Update System 2026-09-28 01:17:14 UTC
FEDORA-2026-c495e95154 (nextcloud-34.0.4-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.


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