CVE-2026-13732

Gdb: gdb: out-of-bounds write in stabs parser read_member_functions() via crafted elf

A flaw was found in GDB's STABS debug format parser. The read_member_functions() function in gdb/stabsread.c contains a linked list removal bug in the code that separates destructor and non-destructor member functions of C++ classes. The bug causes the destructor entries to remain in the main function list while the list length counter is decremented, resulting in an out-of-bounds write when the function list is copied to its final allocated array. An attacker can craft an ELF binary with malicious .stab and .stabstr sections that triggers this out-of-bounds write when a user opens the file in GDB and performs any symbol-inspection operation such as setting a breakpoint. The inferior process does not need to be executed. Under controlled conditions, this was demonstrated to achieve execution of arbitrary commands within the GDB process.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Cost Management On Premise Enterprise Linux Enterprise Linux Eus and 10 more

CVE-2026-114406

Ca-certificates: distrust emudhra intermediate ca certificates due to security concerns

The system certificate authority (CA) store in Red Hat products, distributed via ca-certificates RPM packages, included multiple root CA certificates of authorities, which signed intermediate CA certificates with weak private keys issued by the eMudhra certificate authority. A man-in-the-middle attacker could use this flaw to issue certificates for arbitrary host names signed by the weak intermediate CA certificates, which would be considered trusted by a TLS/SSL client using system CA store and cause such clients to connect to malicious sites. Due to inability to only distrust specific intermediate certificates in all clients using the system CA store, root CA certificates of authorities that signed weak intermediate CA certificates are being removed.

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

Vendors

Redhat

Products

Advanced Cluster Security Agentic Cluster Security Suite Ai Inference Server and 23 more

CVE-2026-119618

Apache HTTP Server: mod_http2: heap corruption and RCE in assign_headers

Concurrent Execution using Shared Resource with Improper Synchronization vulnerability in Apache HTTP Server's mod_http2 in assign_headers() can lead to RCE. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.70. Affected releases of mod_h2 from GitHub: from 2.0.8 through 2.0.42.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Apache Apache Software Foundation Redhat

Products

Apache Http Server Http Server Apache Http Server and 4 more

CVE-2026-16118

Xdgmime: heap-based buffer overflow in _xdg_mime_magic_parse_magic_line() in xdgmimemagic.c

A flaw was found in xdgmime. A heap-based buffer overflow can be triggered in _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2 bytes, resulting in an application crash or memory corruption.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Ai Inference Server Cert Manager Cost Management On Premise and 10 more

CVE-2026-55655

Openssh: local mitm of x11 forwarding via abstract unix socket pre-binding in red hat enterprise linux openssh client versions

A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a local UNIX-domain X socket is used. A successful attack can compromise the confidentiality of forwarded X11 traffic, including sensitive window contents and input, and may allow some manipulation of the forwarded session.

CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed

Vendors

Openbsd Openssh Redhat

Products

Openssh Openssh Enterprise Linux and 12 more

CVE-2026-55653

Openssh: double free in red hat enterprise linux versions of openssh dh-gex client path during fips known-group validation leads to client-side denial of service

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Openbsd Openssh Redhat

Products

Openssh Openssh Enterprise Linux and 12 more

CVE-2026-96280

Flatpak: flatpak: buffer overflow in oci delta stream path names on 32-bit systems

The OCI delta stream parser read sizes as guint64 but passed them to GLib I/O and allocation functions expecting gsize (32 bits on 32-bit systems), causing undersized allocations while subsequent operations use the original 64-bit size, leading to heap buffer overflows. An attacker controlling an OCI registry can craft a delta stream that triggers this during flatpak install/update, potentially achieving code execution on 32-bit systems.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Flatpak Redhat

Products

Flatpak Enterprise Linux Enterprise Linux Eus and 6 more

CVE-2026-96275

Flatpak: flatpak: arbitrary write access as root via extra-data extraction

A malicious or compromised Flatpak repository can write attacker-controlled content to arbitrary locations on the host filesystem via extract_extra_data(). On system installs, the write happens as root. Two issues combine: `files/extra` is resolved via path operations that follow symlinks, and blob names from `xa.extra-data-sources` are not sanitized against `..` traversal.

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

Vendors

Flatpak Redhat

Products

Flatpak Enterprise Linux Enterprise Linux Eus and 6 more

CVE-2026-88924

Gvfs: gvfs-admin socket ownership race permits local root

A flaw was found in the admin backend of gvfs. The privileged gvfsd-admin daemon changes the ownership of newly created private D-Bus sockets by calling the link-following chown() function on a pathname inside a user-controlled directory. A local attacker can exploit this via a Time-of-Check Time-of-Use (TOCTOU) race condition and exchange the socket pathname with a symbolic link pointing to an arbitrary root-owned file (such as /etc/pam.d/su). The daemon subsequently follows the symlink and changes the ownership of the targeted root-owned file to the attacker's user ID. This allows an authenticated local attacker to modify critical system files, leading to a full local privilege escalation to root.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed

Vendors

Gnome Redhat

Products

Gvfs Enterprise Linux Enterprise Linux Eus and 3 more

CVE-2026-84268

Gvfs: sftp: heap-based buffer overflow in read_reply()

A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause read_reply() to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing the operation to write past the intended boundaries. This issue allows a malicious server to corrupt adjacent heap memory in the gvfsd-sftp process, resulting in a denial of service as the process aborts upon detecting the heap corruption or potentially allowing arbitrary code execution.

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

Vendors

Redhat

Products

Enterprise Linux Enterprise Linux Eus Rhel Aus and 5 more

CVE-2026-86320

Flatpak-builder: host code execution via `git am` hook execution in patch source extraction (`use-git-am`)

A flaw was found in flatpak-builder where Git hooks are not disabled when applying patch sources with use-git-am: true. An attacker who can provide a malicious source containing a Git post-applypatch hook can cause the hook to execute on the host during the build process, resulting in arbitrary code execution with the privileges of the user running flatpak-builder.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Enterprise Linux Eus and 5 more

CVE-2026-97024

Flatpak: flatpak: arbitrary write in root context via path traversal in deploy directory files/etc

A path traversal vulnerability in Flatpak's handling of the files/etc directory during app deployment allows a malicious Flatpak app to cause certain host system files (such as passwd, group, machine-id, or resolv.conf) to be emptied or replaced with a symlink when the app is installed or upgraded. In system-wide installations, the write is performed as root.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Flatpak Redhat

Products

Flatpak Enterprise Linux Enterprise Linux Eus and 3 more

CVE-2026-97023

Flatpak: flatpak: arbitrary file deletion in root context via path traversal in deploy directory export/bin

A path traversal vulnerability in Flatpak's handling of the export/bin directory during app deployment allows a malicious Flatpak app to cause deletion of attacker-chosen files outside the deployment directory when the app is installed or upgraded. In system-wide installations, the deletion is performed as root.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Flatpak Redhat

Products

Flatpak Enterprise Linux Enterprise Linux Eus and 3 more

CVE-2026-74860

Libxml2: double-free/uaf in libxml2 python bindings

A flaw was found in libxml2 with Python bindings enabled. A remote attacker could exploit this vulnerability by providing a specially crafted XML document containing a Document Type Definition (DTD) with enumerated attribute values. This triggers a double-free error in the SAX attributeDecl callback handler, where a string is freed twice. This flaw can lead to a denial of service (DoS) due to a reproducible crash in Python applications using the libxml2 SAX bindings.

CVSS 3.1 · 8.5 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Cert Manager Cost Management On Premise Enterprise Linux and 13 more

CVE-2026-97185

Gimp: gimp: out-of-bounds write in gimpressionist plugin via crafted preset file

A flaw was found in GIMP. When processing a specially crafted GIMPressionist preset file, the plug-in does not properly validate vector indices before writing into fixed-size arrays. This can lead to an out-of-bounds write, corrupting memory. An attacker could exploit this by convincing a user to load a malicious preset file, potentially causing a crash or enabling arbitrary code execution.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Gimp Redhat

Products

Gimp Enterprise Linux Rhel E4s and 1 more

CVE-2026-92248

Gimp: integer overflow when generating a thumbnail preview for a psd file

A flaw was found in the file-psd plugin in GIMP. When generating a thumbnail preview for a specially crafted PSD (Photoshop Document) image file, an integer overflow occurs during the multiplication of values from an embedded JPEG header. This leads to an undersized heap allocation, resulting in a heap-based buffer overflow when the image data is decoded. This buffer overflow corrupts adjacent heap objects, allowing for a controlled memory write that can result in an application crash or arbitrary code execution.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Gnome Red Hat Redhat

Products

Gimp Enterprise Linux Enterprise Linux and 2 more

CVE-2026-90948

Gimp: gimp: heap-based buffer overflow in ico loader via integer overflow in embedded png dimensions

A flaw was found in GIMP's ICO file loader. When processing an ICO file containing an embedded PNG image, an integer overflow can occur during the calculation of the required buffer size. This leads to an undersized buffer being allocated, causing a heap-based buffer overflow when the decoded pixel data is written. A remote attacker could exploit this by crafting a malicious ICO file, which, when opened, could lead to arbitrary code execution or a crash.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Gimp Red Hat Redhat

Products

Gimp Enterprise Linux Enterprise Linux and 2 more

CVE-2026-90947

Gimp: gimp: out-of-bounds write in lighting effects plugin via crafted preset file

A flaw was found in GIMP. When processing a specially crafted lighting preset file, the Lighting Effects filter does not properly validate the number of light sources. This can lead to an out-of-bounds write, corrupting memory. An attacker could exploit this by convincing a user to open a malicious preset file, potentially causing a crash or enabling arbitrary code execution.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Gnome Red Hat Redhat

Products

Gimp Enterprise Linux Enterprise Linux and 2 more

CVE-2026-15711

Libsoup: soupwebsocketconnection: libsoup: websocket remote denial of service via oversized control frame protocol violation

A vulnerability was found in libsoup's WebSocket frame parsing implementation. The library fails to validate length rules specified in RFC 6455 §5.5, which mandates that all WebSocket control frames (e.g., PING, PONG, CLOSE) contain a payload of 125 bytes or less. A remote, unauthenticated attacker can exploit this by sending a non-compliant, oversized control frame. Because the parser handles this protocol violation improperly instead of throwing an immediate connection termination error, it triggers a internal processing crash, resulting in a remote denial of service (DoS) for applications utilizing libsoup WebSockets.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Libsoup Redhat

Products

Libsoup Enterprise Linux Enterprise Linux Eus and 6 more

CVE-2026-15709

Soupwebsocketextensiondeflate: libsoup: libsoup: websocket permessage-deflate unbounded decompression remote denial of service

A flaw was found in libsoup's WebSocket implementation when using the permessage-deflate extension. The extension's decompression loop (inflate()) processes data in chunks without enforcing an upper boundary limit on the output buffer size. While libsoup limits the incoming compressed frame size via max_incoming_payload_size, it fails to track or limit memory allocation during decompression. A separate check for decompressed size (max_total_message_size) exists but executes only after inflation is complete, and it is entirely disabled by default for client connections. A remote, unauthenticated attacker can exploit this by sending a small, highly compressed payload (a decompression bomb), causing unbounded memory allocation that triggers an Out-of-Memory (OOM) crash and a Denial of Service (DoS).

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Libsoup Redhat

Products

Libsoup Enterprise Linux Enterprise Linux Eus and 6 more