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CVE-2026-115484

Open-iscsi: open-iscsi: dhcpv4 option parser heap out-of-bounds read in iscsiuio parse_msg

A flaw was found in the iscsiuio component of open-iscsi. The DHCPv4 option parser incorrectly calculates the length of the options data, causing it to read beyond the allocated buffer into adjacent heap memory. An attacker on the same network segment can send a crafted DHCP response to crash the daemon or corrupt its network configuration.

CVSS 3.1 · 7.6 High EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat
Products
Enterprise Linux Enterprise Linux Rhel Els
CVE-2026-11884

389-ds-base: 389-ds-base: heap buffer overflow in schema objectclass serialization due to missing oc_superior in size calculation

A heap buffer overflow flaw was found in 389 Directory Server. When serializing objectclass definitions, the oc_superior (SUP) field length is omitted from buffer size calculations in read_schema_dse() and schema_oc_to_string(), but the field is still written via strcat(). An attacker with Directory Manager privileges, or a compromised replication supplier, can trigger a server crash by creating objectclasses with long SUP values. This is an incomplete fix variant of CVE-2025-14905.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Directory Server Enterprise Linux Redhat Directory Server and 1 more
CVE-2026-11861

Freeipa: idm: ipa: freeipa: obtaining tgs with impersonating cname through trust relationships

A flaw was found in FreeIPA. When a trust relationship is configured between FreeIPA and Active Directory, Active Directory users can bypass authentication for FreeIPA services, including the portal, SMB server, and LDAP directory. This is possible by impersonating a client name in the Ticket Granting Service (TGS) due to FreeIPA services not verifying Privilege Attribute Certificate (PAC) certificates. This vulnerability could allow an authenticated Active Directory user to escalate their privileges within the FreeIPA domain.

CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed
Vendors
Freeipa Redhat
Products
Freeipa Enterprise Linux Enterprise Linux Eus and 6 more
CVE-2026-11873

Pki-core: dogtag-pki: empty request to dogtag /ca/rest/certrequests causes http 500, java exception, and stacktrace disclosure

An Apache-proxied Dogtag CA REST endpoint exposed by IdM (POST /ca/rest/certrequests) returns HTTP 500 with internal Java stack traces for unauthenticated malformed requests. The same unauthenticated error path emits large multi-line stack traces into the CA debug log, creating a log-amplification resource exhaustion vector (disk growth and I/O contention) without requiring authentication.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Certificate System Dogtag Certificate System Enterprise Linux and 1 more
CVE-2026-11791

389-ds-base: 389-ds-base: use-after-free in schema reload via attr_syntax_swap_ht()

A flaw was found in 389 Directory Server. During schema reload, the attr_syntax_swap_ht() function unconditionally frees attribute syntax information nodes, bypassing the refcount-based deferred deletion used elsewhere in the attribute syntax subsystem. If an administrator triggers schema reload while concurrent LDAP query traffic is active, worker threads may access freed memory, resulting in use-after-free or double-free and a denial of service (server crash).

CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
389 Directory Server Directory Server Enterprise Linux and 1 more
CVE-2026-11790

389-ds-base: 389-ds-base: pbkdf2 password storage plugin unbounded iteration count denial of service

A flaw was found in 389 Directory Server. The PBKDF2-SHA256 password storage plugin does not enforce an upper bound on the iteration count extracted from stored password hashes. A privileged attacker who can modify a user's password hash can cause excessive CPU consumption during authentication, resulting in denial of service.

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
389 Directory Server Directory Server Enterprise Linux and 2 more
CVE-2026-11789

389-ds-base: 389-ds-base: smd5 password storage plugin salt length integer underflow crash

A flaw was found in 389 Directory Server. The SMD5 password storage plugin performs unsigned integer underflow when computing salt length from a crafted password hash shorter than 16 bytes, causing a buffer over-read that crashes the LDAP server during authentication.

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
389 Directory Server Directory Server Enterprise Linux and 2 more
CVE-2026-11788

389-ds-base: 389-ds-base: null pointer dereference in deref control plugin ber parser

A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under memory pressure.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
389 Directory Server Directory Server Directory Server E4s and 9 more
CVE-2026-11787

389-ds-base: 389-ds-base: heap buffer over-read in ldap_utf8prev() via str2simple filter parsing

A flaw was found in 389 Directory Server. The ldap_utf8prev() function reads bytes before the start of a buffer without bounds checking, causing a heap buffer over-read in string filter parsing that may influence internal filter processing behavior.

CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
389 Directory Server Directory Server Enterprise Linux and 2 more
CVE-2026-11785

389-ds-base: 389-ds-base: partial stack address information leak via ber_printf type confusion in sso token handler

A flaw was found in 389 Directory Server. A type confusion in the SSO token extended operation handler causes partial stack address information to be disclosed in LDAP responses to authenticated users.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
389 Directory Server Directory Server Enterprise Linux and 2 more
CVE-2026-11770

389-ds-base: 389-ds-base: pre-auth ldap filter injection in cleanallruv status check

A flaw was found in 389 Directory Server. An unauthenticated remote attacker can inject LDAP search filters into the CleanAllRUV replication status-check extended operation. Because the handler performs the search against cn=config with elevated replication plugin privileges and returns a boolean match result, the attacker can extract sensitive server configuration metadata, including replication bind DNs and password storage scheme information.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Port389 Redhat
Products
389-ds-base 389 Directory Server Directory Server and 10 more
CVE-2026-11611

389-ds-base: 389-ds-base: content sync plugin unbounded queue growth and race conditions

A flaw was found in 389 Directory Server. The Content Synchronization persistent search plugin allows unbounded memory growth when an authenticated client stops reading sync responses, enabling denial of service. Additional race conditions in plugin thread lifecycle can cause crashes during connection teardown or shutdown.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
389 Directory Server Directory Server Enterprise Linux and 2 more
CVE-2026-110777

Evolution-data-server: local file disclosure via attach file:// uris

A flaw was found in evolution-data-server. Calendar events containing a file:// URI in their ATTACH property automatically read the targeted local file, base64-encode its contents and upload it back to the server when the event is saved. There are no file path restrictions or checks to verify whether the attachment originally came from the server or was added locally. This allows an attacker with access to a shared CalDAV calendar to exfiltrate arbitrary files the user has access to when interacting with malicious calendar events.

CVSS 3.1 · 5.7 Medium EPSS < 1% KEV · Not listed
Vendors
Gnome Red Hat Redhat
Products
Evolution-data-server Enterprise Linux Enterprise Linux and 1 more
CVE-2026-110133

Ghostscript: heap buffer overflow in ghostscript truetype outliner due to npointstotal integer underflow during retry rollback

A flaw was found in Ghostscript. When processing a specially crafted TrueType font or document embedding one, an accounting error during font rendering can bypass buffer size checks, triggering a heap-based buffer overflow. A remote attacker could exploit this by enticing a victim or automated service to open the malicious content, potentially resulting in a Denial of Service (DoS) crash or arbitrary code execution.

CVSS 3.1 · 5.8 Medium EPSS < 1% KEV · Not listed
Vendors
Ghostscript Red Hat Redhat
Products
Ghostscript Enterprise Linux Enterprise Linux and 1 more
CVE-2026-109971

Clevis: clevis: pkcs#11 token pin exposed on command line via pkcs11-tool

A flaw was found in the clevis PKCS#11 pin. The clevis-decrypt-pkcs11 script passes the PKCS#11 token PIN as a command-line argument to pkcs11-tool, making it visible to any local user through process listing or the /proc filesystem.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat
Products
Enterprise Linux Enterprise Linux Openshift and 2 more
CVE-2026-109970

Clevis: clevis: pkcs#11 token pin written to world-readable file

A flaw was found in the clevis PKCS#11 pin. The clevis-luks-pkcs11-askpin script writes the PKCS#11 token PIN in plaintext to a file without setting restrictive permissions. Under the default process umask, the file is world-readable. Additionally, the PIN file is not reliably cleaned up if the decryption script exits early, leaving the PIN accessible indefinitely.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat
Products
Enterprise Linux Enterprise Linux Openshift and 2 more
CVE-2026-109969

Clevis: clevis: no authentication on pkcs#11 af_unix sockets allows key injection under permissive umask

A flaw was found in the clevis PKCS#11 pin. The clevis-pkcs11-afunix-socket-unlock daemon creates AF_UNIX sockets without explicit permission restrictions or peer credential verification. Under a permissive process umask, any local user can connect to the control socket and inject arbitrary device/key pairs, or connect to the data socket to receive LUKS passphrases.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat
Products
Enterprise Linux Enterprise Linux Openshift and 2 more
CVE-2026-109968

Clevis: clevis: pkcs#11 luks passphrase logged in plaintext to world-readable file

A flaw was found in the clevis PKCS#11 pin. The clevis-pkcs11-afunix-socket-unlock daemon logs LUKS disk encryption passphrases in plaintext to a log file. The log file is created without restrictive permissions, making it world-readable under the default process umask. A local attacker can read the log file to obtain the LUKS passphrase.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat
Products
Enterprise Linux Enterprise Linux Openshift and 2 more
CVE-2025-4035

Libsoup: cookie domain validation bypass via uppercase characters in libsoup

A flaw was found in libsoup. When handling cookies, libsoup clients mistakenly allow cookies to be set for public suffix domains if the domain contains at least two components and includes an uppercase character. This bypasses public suffix protections and could allow a malicious website to set cookies for domains it does not own, potentially leading to integrity issues such as session fixation.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Rhel Els
CVE-2026-100231

Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: heap out-of-bounds write in asfmux due to incorrect utf-16 size calculation for non-bmp characters

A flaw was found in the GStreamer multimedia framework's ASF muxer plugin (asfmux). When writing string metadata tags containing Unicode characters outside the Basic Multilingual Plane (such as emoji) to an ASF container, the plugin incorrectly calculates the buffer size needed for the UTF-16LE representation. The size calculation assumes each Unicode code point requires 2 bytes, but non-BMP characters require 4 bytes (surrogate pairs). This leads to a heap out-of-bounds write when the actual UTF-16LE conversion is written into the undersized buffer. An attacker could exploit this by providing media with crafted metadata tags to an application that transcodes or remuxes to ASF format while preserving metadata, potentially causing a denial of service or limited memory corruption.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat
Products
Enterprise Linux Enterprise Linux Rhel Els