Bug 2558882

Summary: CVE-2026-114724 roundcubemail: roundcubemail: Arbitrary code execution via session object injection [epel-all]
Product: [Fedora] Fedora EPEL Reporter: Lukas Javorsky <ljavorsk>
Component: roundcubemailAssignee: Orphan Owner <extras-orphan>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: epel10CC: anon.amish, extras-orphan, fedora, kevin, mhlavink, tm
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["f56af5bc-4075-4ef3-8555-8083cc4aa4e4"]}
Fixed In Version: roundcubemail-1.6.20-1.el10_4 roundcubemail-1.6.20-1.el10_3 roundcubemail-1.6.20-1.el10_2 roundcubemail-1.6.20-1.fc43 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-11-05 01:19:03 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2558730    

Description Lukas Javorsky 2026-10-22 11:22:13 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.

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 contains an object injection primitive in rcube_session::unserialize(). A session key prefixed with “!” was treated as having no value, and the reconstructed serialized string was emitted with a key but no corresponding value, desynchronizing the remainder of the input so that following session data was interpreted as a serialized value. This yields a PHP object injection primitive for an attacker able to influence stored session data. Upstream fixed this in the commit “Fix object injection primitive in rcube_session::unserialize() via “!”-prefixed session keys”, which rejects such keys.

Comment 1 Fedora Update System 2026-10-27 05:56:36 UTC
FEDORA-EPEL-2026-6c045f4364 (roundcubemail-1.6.20-1.el10_4) has been submitted as an update to Fedora EPEL 10.4.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-6c045f4364

Comment 2 Fedora Update System 2026-10-28 02:58:45 UTC
FEDORA-EPEL-2026-6c045f4364 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-2026-6c045f4364

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

Comment 3 Fedora Update System 2026-10-28 03:18:34 UTC
FEDORA-2026-db7e033531 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-db7e033531`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-db7e033531

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

Comment 4 Fedora Update System 2026-10-28 03:29:47 UTC
FEDORA-EPEL-2026-7597dbe701 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-2026-7597dbe701

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

Comment 5 Fedora Update System 2026-10-28 03:39:45 UTC
FEDORA-EPEL-2026-7012a089ec 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-2026-7012a089ec

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

Comment 6 Fedora Update System 2026-11-05 01:19:03 UTC
FEDORA-EPEL-2026-6c045f4364 (roundcubemail-1.6.20-1.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 7 Fedora Update System 2026-11-05 01:35:47 UTC
FEDORA-EPEL-2026-7597dbe701 (roundcubemail-1.6.20-1.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 8 Fedora Update System 2026-11-05 01:41:00 UTC
FEDORA-EPEL-2026-7012a089ec (roundcubemail-1.6.20-1.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 9 Fedora Update System 2026-11-05 01:44:36 UTC
FEDORA-2026-db7e033531 (roundcubemail-1.6.20-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.