CVE-2026-42420

OpenClaw before 2026.4.8 contains improper input validation in base64 decode paths that allocate memory before enforcing decoded-size limits. Attackers can exploit multiple code paths to cause memory exhaustion or denial of service through crafted base64-encoded input...

ALPINE-CVE-2026-4177

YAML::Syck versions through 1.36 for Perl has several potential security vulnerabilities including a high-severity heap buffer overflow in the YAML emitter. The heap overflow occurs when class names exceed the initial 512-byte allocation. The base64 decoder could read past the buffer end on...

📄 GLib Memory Exhaustion

The gbase64decode function in the GLib library fails to enforce input size limits, allowing attackers to input extremely large Base64-encrypted data, resulting in uncontrolled memory allocation. This vulnerability can be exploited by providing a specially crafted, but syntactically correct, Base6...

OESA-2026-1461 python3 security update

Python combines remarkable power with very clear syntax. It has modules, classes, exceptions, very high level dynamic data types, and dynamic typing. There are interfaces to many system calls and libraries, as well as to various windowing systems. New built-in modules are easily written in C or C...

CVE-2026-2703

A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::decodebase64 of the file source/detail/cryptography/base64.cpp of the component Encrypted XLSX File Parser. Executing a manipulation can lead to off-by-one. The attack requires local access...

PT-2026-20595

Name of the Vulnerable Software and Affected Versions xlnt versions up to 1.6.1 Description A flaw exists in the xlnt::detail::decode base64 function within the Encrypted XLSX File Parser component, specifically in the source/detail/cryptography/base64.cpp file. This can lead to an off-by-one...

OESA-2026-1356 python3 security update

Python combines remarkable power with very clear syntax. It has modules, classes, exceptions, very high level dynamic data types, and dynamic typing. There are interfaces to many system calls and libraries, as well as to various windowing systems. New built-in modules are easily written in C or C...

CVE-2026-2016 happyfish100 libfastcommon base64.c base64_decode stack-based overflow

A security vulnerability has been detected in happyfish100 libfastcommon up to 1.0.84. Affected by this vulnerability is the function base64decode of the file src/base64.c. The manipulation leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit has bee...

EUVD-2026-5685

A security vulnerability has been detected in happyfish100 libfastcommon up to 1.0.84. Affected by this vulnerability is the function base64decode of the file src/base64.c. The manipulation leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit has bee...

CVE-2026-2016

CVE-2026-2016 affects happyfish100 libfastcommon up to version 1.0.84. The vulnerability is in the base64_decode function in src/base64.c, causing a stack-based buffer overflow. Local access is required to exploit. Public disclosure of the exploit is noted. The patch identifier is 82f66af3e252e3e...

CVE-2026-2016 happyfish100 libfastcommon base64.c base64_decode stack-based overflow

A security vulnerability has been detected in happyfish100 libfastcommon up to 1.0.84. Affected by this vulnerability is the function base64decode of the file src/base64.c. The manipulation leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit has bee...

libfastcommon 安全漏洞

libfastcommon is a C language code library developed by YuQing personally. Versions of libfastcommon prior to 1.0.84 contained security vulnerabilities. These vulnerabilities stemmed from incorrect operations on the base64decode function in the src/base64.c file, which could lead to stack-based...

PT-2026-6717

Name of the Vulnerable Software and Affected Versions happyfish100 libfastcommon versions up to 1.0.84 Description A security issue exists in happyfish100 libfastcommon up to version 1.0.84. The base64 decode function within the src/base64.c file is susceptible to a stack-based buffer overflow...

MGASA-2026-0021 Updated iperf packages fix security vulnerabilities

In iperf before 3.19.1, iperfauth.c has an off-by-one error and resultant heap-based buffer overflow. CVE-2025-54349 In iperf before 3.19.1, iperfauth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt. CVE-2025-54350...

Updated iperf packages fix security vulnerabilities

In iperf before 3.19.1, iperfauth.c has an off-by-one error and resultant heap-based buffer overflow. CVE-2025-54349 In iperf before 3.19.1, iperfauth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt. CVE-2025-54350...

BIT-PYTHON-2025-12781 base64.b64decode() always accepts "+/" characters, despite setting altchars

When passing data to the b64decode, standardb64decode, and urlsafeb64decode functions in the "base64" module the characters "+/" will always be accepted, regardless of the value of "altchars" parameter, typically used to establish an "alternative base64 alphabet" such as the URL safe alphabet. Th...

BIT-PYTHON-MIN-2025-12781 base64.b64decode() always accepts "+/" characters, despite setting altchars

When passing data to the b64decode, standardb64decode, and urlsafeb64decode functions in the "base64" module the characters "+/" will always be accepted, regardless of the value of "altchars" parameter, typically used to establish an "alternative base64 alphabet" such as the URL safe alphabet. Th...

BIT-LIBPYTHON-2025-12781 base64.b64decode() always accepts "+/" characters, despite setting altchars

When passing data to the b64decode, standardb64decode, and urlsafeb64decode functions in the "base64" module the characters "+/" will always be accepted, regardless of the value of "altchars" parameter, typically used to establish an "alternative base64 alphabet" such as the URL safe alphabet. Th...

Linux Distros Unpatched Vulnerability : CVE-2025-12781

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - When passing data to the b64decode, standardb64decode, and urlsafeb64decode functions in the base64 module the characters +/ will always be accepted, regardless...

DEBIAN-CVE-2025-12781

When passing data to the b64decode, standardb64decode, and urlsafeb64decode functions in the "base64" module the characters "+/" will always be accepted, regardless of the value of "altchars" parameter, typically used to establish an "alternative base64 alphabet" such as the URL safe alphabet. Th...