DEBIAN-CVE-2026-44660

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operatio...

CVE-2026-44660

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operatio...

UBUNTU-CVE-2026-44660

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operatio...

CVE-2026-44660 UltraJSON: Memory Leak in ujson.dump() on Write Failure

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operatio...

CVE-2026-44660 UltraJSON: Memory Leak in ujson.dump() on Write Failure

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operatio...

CVE-2026-44660

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operatio...

CVE-2026-44660

Summary of CVE-2026-44660 : UltraJSON’s ujson.dump() to a file-like object can leak memory if the underlying write() raises an exception. The root cause is that the temporary JSON string created during objToJSONFile() is not decremented on early return, causing memory growth proportional to the p...

CVE-2026-44660 UltraJSON: Memory Leak in ujson.dump() on Write Failure

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operatio...

EUVD-2026-32663

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operatio...

CVE-2026-44660

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operatio...

CVE-2026-44660: Missing Release of Memory after Effective Lifetime

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.12.1, when ujson.dump writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operatio...

UltraJSON 安全漏洞

UltraJSON is an open-source, ultra-fast JSON encoder and decoder written in pure C language, and compatible with Python 3.7+. Versions of UltraJSON prior to 5.12.1 contained a security vulnerability. This vulnerability occurred when writing object-like data to a file using ujson.dump, where an...

Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to a memory leak or buffer overflow in UltraJSON [CVE-2026-32874, CVE-2026-32875]

Summary IBM Watson Speech Services Cartridge is vulnerable to a memory leak or buffer overflow in UltraJSON due to multiple issues CVE-2026-32874, CVE-2026-32875. UltraJSON is used in our speech runtimes. This vulnerabilitiy has been addressed. Please read the details for remediation below...

UltraJSON has a Memory Leak in ujson.dump() on Write Failure

Summary When ujson.dump writes to a file-like object and the write operation raises an exception, the serialized JSON string object is not decremented, leaking memory. Each failed write operation leaks the full size of the serialized payload. Code that uses ujson.dumps rather than ujson.dump or...

CVE-2026-44660

creationtimestamp| type| source ---|---|--- 2026-05-07 21:50:56+00:00| published-proof-of-concept| https://github.com/ultrajson/ultrajson/security/advisories/GHSA-c38f-wx89-p2xg...

Security Bulletin: UltraJSON Memory Leak in Large Integer Parsing Enables Denial of Service

Summary UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Versions 5.4.0 through 5.11.0 contain an accumulating memory leak in JSON parsing large outside of the range -2^63, 2^64 - 1 integers. The leaked memory is a copy of the string form of the intege...

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : UltraJSON vulnerabilities (USN-8219-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8219-1 advisory. Cameron Criswell discovered that UltraJSON contained a memory leak that would occur when parsing large integers. An...

USN-8219-1 ujson vulnerabilities

Cameron Criswell discovered that UltraJSON contained a memory leak that would occur when parsing large integers. An attacker could possibly use this issue to cause UltraJSON to crash, resulting in a denial of service. This issue only affected Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS...

UltraJSON Memory Leak DoS

The vulnerability of the Python programming language-based UltraJSON package is related to the lack of memory release after the effective lifespan of the package. Exploiting this vulnerability can allow a remote attacker to cause a service failure...

UltraJSON Integer Overflow DoS

The vulnerability of the UltraJSON programming language package in Python is related to integer overflow. Exploiting this vulnerability can allow a malicious actor to cause service failures remotely...