CVE-2026-107466

Flatpak-builder: local file exfiltration via `file

A flaw was found in flatpak-builder. This vulnerability allows an attacker to cause information disclosure by convincing a user or continuous integration (CI) system to process a crafted build manifest. By specifying local file Uniform Resource Identifiers (URIs) within source download definitions, the builder bypasses directory confinement checks. As a result, sensitive host files accessible to the build process can be read and incorporated into the build artifacts.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux

CVE-2026-107168

M17n-lib: parser infinite loop on malformed utf-8 in count_utf_8_chars()

A flaw was found in m17n-lib. By providing crafted input containing an invalid UTF-8 character sequence, an attacker can cause the text parsing function to enter an infinite loop. This issue leads to sustained high CPU utilization, resulting in a Denial of Service (DoS) for the affected application.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed

Vendors

M17n-lib Redhat

Products

M17n-lib Enterprise Linux Rhel Els

CVE-2026-107169

M17n-lib: null-pointer write in read_mtext_element() on malformed utf-8

A flaw was found in m17n-lib. An attacker could provide specially crafted or truncated UTF-8 input to trigger an unhandled null pointer dereference during text processing. This issue causes the application to crash unexpectedly, resulting in a Denial of Service (DoS).

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Rhel Els

CVE-2026-107167

M17n-lib: heap use-after-free write in re_init_ic()

A flaw was found in m17n-lib. A user providing specially crafted text input can trigger a heap use-after-free condition during input-method state transitions. Under specific conditions, the library frees an internal input context object but subsequently attempts to write to that freed memory. This issue can cause applications relying on the library to crash, leading to a Denial of Service (DoS), or potentially allow arbitrary code execution.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Rhel Els

CVE-2026-59851

Libssh: libssh: authentication bypass via missing gssapi principal check

A flaw was found in libssh. On servers with GSSAPIKeyExchange enabled, the gssapi-keyex path does not verify whether the authenticated Kerberos principal is authorized for the requested local user, allowing authenticated clients to log in as arbitrary users.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Libssh Redhat

Products

Libssh Enterprise Linux Enterprise Linux Eus and 9 more

CVE-2026-106067

Gimp: gimp: heap buffer overflow in hot color filter on oversized image

A heap-based buffer overflow was found in GIMP’s Hot color filter plug-in. For very large images, a pixel buffer is allocated using overflowing 32-bit width * height (and related) arithmetic while the filter’s pixel access path uses the true image size, after integer overflow in the allocation size

CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Gimp Redhat

Products

Gimp Enterprise Linux Rhel Els

CVE-2026-106066

Gimp: gimp: heap buffer overflow in raw data export on oversized image dimensions

A heap-based buffer overflow was found in GIMP’s raw data export plug-in. When exporting very large images, g_malloc() sizing based on overflowing width * height * bytes-per-pixel can allocate far less memory than GEGL reads or writes during export, following integer overflow

CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Gimp Redhat

Products

Gimp Enterprise Linux Rhel Els

CVE-2026-106065

Gimp: gimp: heap buffer overflow in pcx export on oversized image dimensions

A heap-based buffer overflow was found in GIMP’s PCX export plug-in. For images with extremely large width and height, buffer allocation uses overflowing 32-bit width * height arithmetic while subsequent GEGL operations use the full extent, after integer overflow in size calculation

CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Gimp Redhat

Products

Gimp Enterprise Linux Rhel Els

CVE-2026-106064

Gimp: gimp: heap buffer overflow in gif export on oversized image dimensions

A heap-based buffer overflow was found in GIMP’s GIF export plug-in. Exporting an image with very large width and height can cause 32-bit overflow when computing the pixel buffer size. The plug-in allocates a buffer based on the wrapped value while GEGL writes using the true image extent, rooted in integer overflow

CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Gimp Red Hat Redhat

Products

Gimp Enterprise Linux Enterprise Linux and 1 more

CVE-2026-106063

Gimp: gimp: heap buffer overflow in dicom export on oversized image dimensions

A heap-based buffer overflow was found in GIMP’s DICOM export plug-in. When exporting an image with extremely large width and height, the export path allocates a buffer using a 32-bit width * height (and bytes-per-pixel) product that can overflow. GEGL then writes the full uncompressed extent into the undersized buffer, after integer overflow in the allocation size

CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed

Vendors

Gimp Redhat

Products

Gimp Enterprise Linux Rhel Els

CVE-2026-106061

Gimp: gimp: heap buffer over-read in x cursor (xmc) thumbnail loader on crafted file

A flaw was found in GIMP’s X cursor (XMC) thumbnail loader. When GIMP generates a thumbnail for a crafted XMC file, it allocates a pixel buffer using a width * height size computed in 32-bit signed arithmetic. If that product overflows, the allocation is smaller than the true image extent. A subsequent GEGL buffer read uses the unwrapped dimensions and performs an out-of-bounds read on the heap, after integer overflow in the size calculation. This can crash GIMP or corrupt process memory.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Gimp Red Hat Redhat

Products

Gimp Enterprise Linux Enterprise Linux and 1 more

CVE-2026-104048

Sssd: sssd: authorization bypass via cross-domain username collision in hbac evaluation

A flaw was found in SSSD. In trust-enabled identity management environments, SSSD evaluates Host-Based Access Control (HBAC) rules by stripping domain qualifiers and comparing only short usernames. An authenticated user in a trusted domain who shares the same username as an authorized local account can bypass access policies and gain unauthorized access to protected services or hosts.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed

Vendors

Fedoraproject Redhat Sssd

Products

Sssd Enterprise Linux Openshift and 3 more

CVE-2026-104047

Sssd: sssd: information disclosure via query injection in entra id lookups

A flaw was found in SSSD. When configured to use Microsoft Entra ID, search inputs are not properly sanitized before being incorporated into directory query filters. A local user can exploit this vulnerability by submitting a crafted lookup request, manipulating the query logic to cause unauthorized information disclosure from the directory.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Fedoraproject Redhat Sssd

Products

Sssd Enterprise Linux Openshift and 3 more

CVE-2026-104046

Sssd: sssd: denial of service via incomplete identity provider authentication requests

A flaw was found in SSSD (System Security Services Daemon). When Identity Provider (IdP) authentication is enabled, pre-authentication requests retain state in memory without being cleared or timed out. A local attacker can repeatedly initiate authentication flows without completing them, causing unbounded memory consumption. This memory exhaustion can lead to a Denial of Service (DoS) by degrading or terminating SSSD authentication services.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed

Vendors

Fedoraproject Redhat Sssd

Products

Sssd Enterprise Linux Openshift and 3 more

CVE-2026-104045

Sssd: sssd: denial of service via race condition in autofs responder

A flaw was found in SSSD. A local user can trigger a Denial of Service (DoS) by exploiting a race condition in the autofs responder between asynchronous enumeration completion and map invalidation. By repeatedly sending concurrent map enumeration and invalidation requests, an attacker can cause memory to leak, leading to excessive memory consumption that can disrupt or crash the autofs service.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed

Vendors

Fedoraproject Redhat Sssd

Products

Sssd Enterprise Linux Openshift and 3 more

CVE-2026-104044

Sssd: sssd: denial of service via crafted passkey kerberos authentication request

A flaw was found in sssd. A local attacker can trigger a Denial of Service (DoS) by sending a specially crafted Pluggable Authentication Module (PAM) request when passkey authentication is enabled. Due to a missing state validation check in passkey Kerberos handling, the PAM responder dereferences an uninitialized pointer and crashes. This failure disrupts authentication services on the host.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat Sssd

Products

Enterprise Linux Openshift Openshift Container Platform and 2 more

CVE-2026-104043

Sssd: sssd: denial of service via undersized packet parsing in nss responder

A flaw was found in SSSD. A local attacker with access to the Name Service Switch (NSS) responder UNIX socket can trigger an integer underflow by sending a specially crafted request with an undersized packet header. This issue causes an out-of-bounds memory read during packet parsing, crashing the responder process and resulting in a Denial of Service (DoS).

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat Sssd

Products

Enterprise Linux Openshift Openshift Container Platform and 2 more

CVE-2026-104042

Sssd: sssd: denial of service via out-of-bounds read in pam responder

A flaw was found in sssd. A local attacker can cause a Denial of Service (DoS) by sending a crafted Pluggable Authentication Module (PAM) request containing a zero-length authentication token to the responder socket. Due to missing input validation, the service attempts to read beyond buffer boundaries when processing the token, causing the PAM responder to crash.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat Sssd

Products

Enterprise Linux Openshift Openshift Container Platform and 2 more

CVE-2026-104041

Sssd: sssd: denial of service via unbounded negative cache growth

A flaw was found in SSSD. An unprivileged local user can repeatedly request lookups for nonexistent entries through the Name Service Switch (NSS) responder. Because the negative cache does not limit the total number of stored entries and only removes expired records when an existing key is rechecked, the cache can grow without bound. This behavior can lead to memory exhaustion, resulting in a Denial of Service (DoS) as the responder becomes unresponsive or terminates.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat Sssd

Products

Enterprise Linux Openshift Rhel Els and 1 more

CVE-2026-104039

Sssd: sssd: denial of service via stale connection state reuse in pam gssapi responder

A flaw was found in SSSD. A local user can cause a denial of service (DoS) by disrupting system authentication services. When handling Generic Security Services Application Programming Interface (GSSAPI) authentication in the Pluggable Authentication Module (PAM) responder, cached connection state is freed upon completion without clearing the reference pointer. An attacker can exploit this by sending an additional request over the same connection, causing the service to access invalid memory and unexpectedly terminate.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed

Vendors

Fedoraproject Redhat Sssd

Products

Sssd Enterprise Linux Openshift and 3 more