ownCloud Guests - User Enumeration

ownCloud Guests before 0.12.5 contains an unauthenticated user enumeration vulnerability caused by insufficient validation of the token in showPasswordForm at /apps/guests/register/email/token, letting unauthenticated attackers enumerate valid guest users, exploit requires no authentication. id:...

EUVD-2026-50485

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.4 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user with guest-role permissions to access test report contents they were not authorized to...

PT-2026-65886

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.4 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user with guest-role permissions to access test report contents they were not authorized to...

CVE-2026-42493

Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives HVM/PVH: HAP, PV: shim are commonly available, the decision was to deprecate the functionality, while still retainin...

EUVD-2026-49770

Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives HVM/PVH: HAP, PV: shim are commonly available, the decision was to deprecate the functionality, while still retainin...

grant-table: version change racing with other operations

ISSUE DESCRIPTION With the introduction of Grant Table v2 came the requirement to be able to switch between versions. Switching from v1 to v2 reduces the number of valid grant references, as a bigger shared entry structure is then needed while the shared table doesn't change size. Switching from ...

Viridian STIMER division by zero

ISSUE DESCRIPTION The logic to handle periodic Viridian STIMERs performs a division with an unchecked user-controlled divisor value, that can be set to zero to cause a DE fault. IMPACT Enabling Viridian STIMERs to unprivileged HVM guests can result in a Denial of Service DoS affecting the entire...

PoD: Don't try to reclaim special pages

ISSUE DESCRIPTION A guest started with Populated on Demand enabled PoD can attempt to reclaim pages which aren't regular guest RAM. This can cause corruption of memory management state in Xen. IMPACT A buggy or malicious guest can cause corruption of Xen's state, leading to crashes or other...

PT-2026-65461

Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives HVM/PVH: HAP, PV: shim are commonly available, the decision was to deprecate the functionality, while still retainin...

EUVD-2026-45933

SurrealDB before v2.6.1 and before v3.0.0-beta.3 contains a denial of service vulnerability in its embedded JavaScript scripting engine, which is enabled via the --allow-scripting capability disabled by default. Any user able to execute arbitrary queries — including unauthenticated guests when...

CVE-2026-63762 SurrealDB before v2.6.1 Denial of Service via scripting

SurrealDB before v2.6.1 and before v3.0.0-beta.3 contains a denial of service vulnerability in its embedded JavaScript scripting engine, which is enabled via the --allow-scripting capability disabled by default. Any user able to execute arbitrary queries — including unauthenticated guests when...

edk2 security, bug fix, and enhancement update

An update is available for edk2. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list EDK Embedded Development Kit is a project to enable UEFI support for Virtual...

RLSA-2026:36721 Moderate: edk2 security, bug fix, and enhancement update

EDK Embedded Development Kit is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM. Security Fixes: openssl: Out-of-bounds read & write in RFC 3211 KEK Unwrap CVE-2025-9230 Bug Fixes and Enhancements: FJ8.10 Bug How to Updat...

Moderate: Red Hat Security Advisory: edk2 security, bug fix, and enhancement update

An update for edk2 is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the C...

ALSA-2026:36721 Moderate: edk2 security, bug fix, and enhancement update

EDK Embedded Development Kit is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM. Security Fixes: openssl: Out-of-bounds read & write in RFC 3211 KEK Unwrap CVE-2025-9230 Bug Fixes and Enhancements: FJ8.10 Bug How to Updat...

VulnCheck KEV: CVE-2023-39361

Cacti is an open source operational monitoring and fault management framework. Affected versions are subject to a SQL injection discovered in graphview.php. Since guest users can access graphview.php without authentication by default, if guest users are being utilized in an enabled state, there...

CVE-2026-53345

CVE-2026-53345 affects the Linux kernel KVM implementation. The issue arises when marking a guest page dirty: a warning is emitted about not having a running vCPU unless the VM’s refcount is non-zero, which could leak memory for SEV-ES guests. Connected advisories show Debian/Ubuntu/RootOS patche...

CVE-2026-9539

An out-of-bounds heap read and integer underflow in the TCP urgent data handling sosendoob in freedesktop.org libslirp version before v4.9.2 on hypervisor host environments e.g., QEMU allows a privileged guest VM attacker root or CAPNETRAW to leak gigabytes of sensitive host-process heap memory v...

CVE-2026-9539 libslirp TCP URG OOB Read Information Leak

An out-of-bounds heap read and integer underflow in the TCP urgent data handling sosendoob in freedesktop.org libslirp version before v4.9.2 on hypervisor host environments e.g., QEMU allows a privileged guest VM attacker root or CAPNETRAW to leak gigabytes of sensitive host-process heap memory v...

CVE-2026-8823

Mattermost versions 11.7.x = 11.7.0, 10.11.x = 10.11.17 fail to validate bot targets when demoting users to guests which allows a lower-privileged administrator to degrade arbitrary bot accounts via the standard demote-user API.. Mattermost Advisory ID: MMSA-2026-00669...