USN-8737-2: GNU C Library vulnerabilities

USN-8737-1 fixed vulnerabilities in GNU C Library. This update provides the corresponding fixes for Ubuntu 24.04 LTS. Original advisory details: It was discovered that GNU C Library had a buffer overflow in the strfmon function when handling right-justification padding. An attacker could possibly...

CVE-2026-87933

A vulnerability was found in DaveGamble cJSON up to 1.7.19. The affected element is the function cJSONUtilsMergePatch of the file cJSONUtils.c. The manipulation results in use after free. The attack may be launched remotely. The exploit has been made public and could be used. The pull request to...

UBUNTU-CVE-2026-87933

A vulnerability was found in DaveGamble cJSON up to 1.7.19. The affected element is the function cJSONUtilsMergePatch of the file cJSONUtils.c. The manipulation results in use after free. The attack may be launched remotely. The exploit has been made public and could be used. The pull request to...

UBUNTU-CVE-2026-22590

eprosima Fast DDS is a C++ implementation of the DDS Data Distribution Service standard of the OMG Object Management Group. Versions prior to 2.6.12, 2.14.6, 3.2.4, 3.3.1, and 3.4.2 have a remotely triggerable Out-of-Bounds Read while processing RTPS DATAFRAG submessages. An attacker can craft a...

UBUNTU-CVE-2026-22591

eprosima Fast DDS is a C++ implementation of the DDS Data Distribution Service standard of the OMG Object Management Group. Prior to versions 2.6.12, 2.14.6, 3.2.4, and 3.4.3, Fast DDS’s implementation of SQL‑based content filtering DDSSQLFilter allows any participant in a DDS domain to remotely...

RLSA-2026:64800 Moderate: glib2 security update

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures. Security Fixes: xdgmime: heap-based buffer...

UBUNTU-CVE-2026-53938

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. Prior to version 0.6.2.5, cjose's JWE decryption path for the AES Key Wrap key-management algorithms alg = A128KW, A192KW, A256KW does not validate the length of the attacker-supplied encryptedkey JWE...

CVE-2026-53939

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. In versions 0.6.1 through 0.6.2.5, when cjose encrypts a JWE using an AES-CBC-HMAC content-encryption algorithm A128CBC-HS256, A192CBC-HS384, or A256CBC-HS512 together with any key-management algorithm th...

CVE-2026-53938

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. Prior to version 0.6.2.5, cjose's JWE decryption path for the AES Key Wrap key-management algorithms alg = A128KW, A192KW, A256KW does not validate the length of the attacker-supplied encryptedkey JWE...

UBUNTU-CVE-2026-53939

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. In versions 0.6.1 through 0.6.2.5, when cjose encrypts a JWE using an AES-CBC-HMAC content-encryption algorithm A128CBC-HS256, A192CBC-HS384, or A256CBC-HS512 together with any key-management algorithm th...

USN-8737-1: GNU C Library vulnerabilities

It was discovered that GNU C Library had a buffer overflow in the strfmon function when handling right-justification padding. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 26.04 LTS. CVE-2026-19499 It was discover...

[SECURITY] Fedora 44 Update: libsoup3-3.6.6-10.fc44

Libsoup is an HTTP library implementation in C. It was originally part of a SOAP Simple Object Access Protocol implementation called Soup, but the SOAP and non-SOAP parts have now been split into separate packages. libsoup uses the Glib main loop and is designed to work well with GTK applications...

Moderate: expat security update

Expat is a C library for parsing XML documents. Security Fixes: expat: libexpat: Use-after-free vulnerability due to improper handler call depth tracking CVE-2026-50219 expat: libexpat: Arbitrary Code Execution via Heap-based Buffer Overflow CVE-2026-56132 For more details about the security...

CVE-2026-86139

In libxml2 before 2.15.4, xmlURIEscapeStr in uri.c has an integer overflow...

CVE-2026-57160

PJSIP is a free and open source multimedia communication library written in C. Prior to commit d6a0e7f, a buffer overflow can occur in pjsipgenericarrayhdrprint in pjsip/src/pjsip/sipmsg.c, the function that serializes generic array headers such as Allow, Require, Supported, and Unsupported. Unde...

CVE-2026-53720 pymonocypher: Potential heap buffer overflow on nb_blocks in argon2i_32 when provided buffer is too small

pymonocypher uses cython to wrap the Monocypher C library. Prior to version 4.0.2.8, the argon2i32 implementation does not check the nbblocks size. If the caller does not provide a sufficiently large buffer based on the API contract, then argon2i32 will write past the end of the buffer and possib...

xmlrpc-c: XMLRPC-C Library: Cross-Site Scripting in error page component

A flaw was found in the XMLRPC-C Library. This reflected cross-site scripting XSS vulnerability exists in the error page component. A remote attacker could exploit this by tricking a user into clicking a specially crafted link. Successful exploitation could lead to the execution of malicious...

xmlrpc-c: XMLRPC-C Library: Cross-Site Scripting in error page component

A flaw was found in the XMLRPC-C Library. This reflected cross-site scripting XSS vulnerability exists in the error page component. A remote attacker could exploit this by tricking a user into clicking a specially crafted link. Successful exploitation could lead to the execution of malicious...

xmlrpc-c: XMLRPC-C Library: Cross-Site Scripting in error page component

A flaw was found in the XMLRPC-C Library. This reflected cross-site scripting XSS vulnerability exists in the error page component. A remote attacker could exploit this by tricking a user into clicking a specially crafted link. Successful exploitation could lead to the execution of malicious...

xmlrpc-c: XMLRPC-C Library: Cross-Site Scripting in error page component

A flaw was found in the XMLRPC-C Library. This reflected cross-site scripting XSS vulnerability exists in the error page component. A remote attacker could exploit this by tricking a user into clicking a specially crafted link. Successful exploitation could lead to the execution of malicious...