json-interop-vuln-labs

JSON Interoperability Vulnerability Labs Description These are the companion labs to my research article "An Exploration of JSON Interoperability Vulnerabilities". Lab 1: Free purchases in an E-commerce Application Key Collision Attacks: Inconsistent Duplicate Key Precedence Inconsistent Large...

PT-2026-121812

jwkFields.CheckConsistency detected duplicate key ops entries with a pairwise nested loop, making validation cost grow with the square of the entry count. Because the check runs on every JWK and JWKS unmarshal, a modestly sized but hostile JWKS document could occupy a CPU core for many seconds...

SUSE CVE-2026-110672

Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decodehv. A quoted key of 24 or more bytes, or one containing a non-ASCII byte or an escape sequence, is decoded into a new scalar. Nothing frees that scalar when th...

Linux Distros Unpatched Vulnerability : CVE-2026-110672

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decodehv. A quoted key of 24...

DEBIAN-CVE-2026-110672

Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decodehv. A quoted key of 24 or more bytes, or one containing a non-ASCII byte or an escape sequence, is decoded into a new scalar. Nothing frees that scalar when th...

CVE-2026-110672

Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decodehv. A quoted key of 24 or more bytes, or one containing a non-ASCII byte or an escape sequence, is decoded into a new scalar. Nothing frees that scalar when th...

CVE-2026-110672 Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decode_hv

Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decodehv. A quoted key of 24 or more bytes, or one containing a non-ASCII byte or an escape sequence, is decoded into a new scalar. Nothing frees that scalar when th...

CVE-2026-110672

Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decodehv. A quoted key of 24 or more bytes, or one containing a non-ASCII byte or an escape sequence, is decoded into a new scalar. Nothing frees that scalar when th...

CVE-2026-110672

The Cpanel::JSON::XS Perl module versions before 4.80 are vulnerable to a memory leak in the decode_hv function. The issue occurs when a quoted key of 24 or more bytes, or one containing non-ASCII bytes/escape sequences, is decoded into a new scalar. If the object is subsequently rejected due to ...

CVE-2026-110672 Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decode_hv

Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decodehv. A quoted key of 24 or more bytes, or one containing a non-ASCII byte or an escape sequence, is decoded into a new scalar. Nothing frees that scalar when th...

PT-2026-132895

Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decode hv. A quoted key of 24 or more bytes, or one containing a non-ASCII byte or an escape sequence, is decoded into a new scalar. Nothing frees that scalar when t...

CVE-2026-110672: Missing Release of Memory after Effective Lifetime

Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded key of an object rejected for a duplicate key or a missing colon in decodehv. A quoted key of 24 or more bytes, or one containing a non-ASCII byte or an escape sequence, is decoded into a new scalar. Nothing frees that scalar when th...

PT-2026-117570

Name of the Vulnerable Software and Affected Versions Cpanel::JSON::XS versions prior to 4.80 Description A memory leak occurs in the decode hv function when an object is rejected due to a duplicate key or a missing colon. Specifically, if a quoted key is 24 bytes or longer, contains a non-ASCII...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Keys: Fixed the issue of linking a duplicate key to a keyring’s assocarray. When making a DNS query within the kernel using dnsquery, the request code can, in rare cases, create a duplicate index key in the assocarray of the...

CVE-2026-50029

js-toml is a TOML parser for JavaScript, Prior to version 1.1.2, the interpreter checks whether a key already exists in a parser-built container with if objectkey instead of if key in object. When the prior value is a falsy primitive — false, 0, 0n, 0.0, -0, or "" — the duplicate-key branch is...

CVE-2026-50029

Affects js-toml prior to 1.1.2. The parser uses if (object[key]) to decide duplicates, causing falsy primitives (false, 0, 0n, 0.0, -0, "") to be overwritten by later keys; this yields structural type confusion in load() output (e.g., isAdmin becomes truthy object). MITRE/ATT&CK not specified in ...

CVE-2026-50029

js-toml is a TOML parser for JavaScript, Prior to version 1.1.2, the interpreter checks whether a key already exists in a parser-built container with "if objectkey" instead of "if key in object". When the prior value is a falsy primitive — "false", "0", "0n", "0.0", "-0", or """" — the...

CVE-2026-50029 js-toml has silent type confusion via falsy-primitive duplicate-key bypass

js-toml is a TOML parser for JavaScript, Prior to version 1.1.2, the interpreter checks whether a key already exists in a parser-built container with if objectkey instead of if key in object. When the prior value is a falsy primitive — false, 0, 0n, 0.0, -0, or "" — the duplicate-key branch is...

CVE-2026-50029

js-toml is a TOML parser for JavaScript, Prior to version 1.1.2, the interpreter checks whether a key already exists in a parser-built container with if objectkey instead of if key in object. When the prior value is a falsy primitive — false, 0, 0n, 0.0, -0, or "" — the duplicate-key branch is...

EUVD-2026-58791

js-toml is a TOML parser for JavaScript, Prior to version 1.1.2, the interpreter checks whether a key already exists in a parser-built container with if objectkey instead of if key in object. When the prior value is a falsy primitive — false, 0, 0n, 0.0, -0, or "" — the duplicate-key branch is...