Bug 2427911 - CVE-2026-0719 libsoup3: libsoup: Arbitrary code execution via stack-based buffer overflow in NTLM authentication [fedora-43]
Summary: CVE-2026-0719 libsoup3: libsoup: Arbitrary code execution via stack-based buf...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: libsoup3
Version: 43
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Gwyn Ciesla
QA Contact:
URL:
Whiteboard: {"flaws": ["c7cb56b2-6084-4648-a411-a...
Depends On:
Blocks: CVE-2026-0719
TreeView+ depends on / blocked
 
Reported: 2026-01-08 12:17 UTC by Abhishek Raj
Modified: 2026-08-27 01:10 UTC (History)
3 users (show)

Fixed In Version: libsoup3-3.6.6-4.fc43
Clone Of:
Environment:
Last Closed: 2026-08-27 01:10:45 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
GNOME Gitlab GNOME libsoup issues 477 0 None opened (CVE-2026-0719) (#YWH-PGM9867-125) Signed to Unsigned Conversion Error on libsoup through libsoup/auth/soup-auth-ntlm.c ... 2026-03-19 14:34:11 UTC

Description Abhishek Raj 2026-01-08 12:17:33 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.

The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams

Comment 1 Fedora Update System 2026-08-14 13:58:36 UTC
FEDORA-2026-f3ca65c0c9 (libsoup3-3.6.6-4.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-f3ca65c0c9

Comment 2 Fedora Update System 2026-08-15 01:55:46 UTC
FEDORA-2026-f3ca65c0c9 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-f3ca65c0c9`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-f3ca65c0c9

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

Comment 3 Fedora Update System 2026-08-27 01:10:45 UTC
FEDORA-2026-f3ca65c0c9 (libsoup3-3.6.6-4.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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