EUVD-2026-104565

Cpanel::JSON::XS versions before 4.80 for Perl use freed filter callbacks when a filter removes itself during decoding in decodehv. A decode copies the parser's filterjsonobject and filterjsonsinglekeyobject callbacks without taking references to them. A filter callback that removes the last...

CVE-2026-110686 Cpanel::JSON::XS versions before 4.80 for Perl use freed filter callbacks when a filter removes itself during decoding in decode_hv

Cpanel::JSON::XS versions before 4.80 for Perl use freed filter callbacks when a filter removes itself during decoding in decodehv. A decode copies the parser's filterjsonobject and filterjsonsinglekeyobject callbacks without taking references to them. A filter callback that removes the last...

CVE-2026-110686

Cpanel::JSON::XS versions before 4.80 for Perl use freed filter callbacks when a filter removes itself during decoding in decodehv. A decode copies the parser's filterjsonobject and filterjsonsinglekeyobject callbacks without taking references to them. A filter callback that removes the last...

CVE-2026-110685

The Cpanel::JSON::XS Perl module in versions before 4.80 is vulnerable to a memory leak in the decode_tag function when allow_tags is enabled. When the THAW method of a tagged value's class fails (dies) during decoding, the decoded argument structure remains allocated in memory because it is only...

EUVD-2026-104564

Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded arguments of a tagged value when its THAW method dies in decodetag. With allowtags, a tagged value's class name and argument array are decoded and passed to the class's THAW method. Both are released only after THAW returns, so a THA...

CVE-2026-110685 Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded arguments of a tagged value when its THAW method dies in decode_tag

Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded arguments of a tagged value when its THAW method dies in decodetag. With allowtags, a tagged value's class name and argument array are decoded and passed to the class's THAW method. Both are released only after THAW returns, so a THA...

CVE-2026-110685

Cpanel::JSON::XS versions before 4.80 for Perl leak the decoded arguments of a tagged value when its THAW method dies in decodetag. With allowtags, a tagged value's class name and argument array are decoded and passed to the class's THAW method. Both are released only after THAW returns, so a THA...

CVE-2026-110684

The Cpanel::JSON::XS Perl module (versions 3.0202 before 4.80 ) is vulnerable to a memory leak within the encode_stringify function. The issue occurs when encoding values as strings under specific conditions, such as allow_stringify, convert_blessed for objects without TO_JSON, and allow_bignum. ...

CVE-2026-110684 Cpanel::JSON::XS versions from 3.0202 before 4.80 for Perl leak memory and retain overloaded objects when encoding values as strings in encode_stringify

Cpanel::JSON::XS versions from 3.0202 before 4.80 for Perl leak memory and retain overloaded objects when encoding values as strings in encodestringify. encodestringify writes a value in its string form under allowstringify, under convertblessed for objects without TOJSON, and under allowbignum...

CVE-2026-110684

Cpanel::JSON::XS versions from 3.0202 before 4.80 for Perl leak memory and retain overloaded objects when encoding values as strings in encodestringify. encodestringify writes a value in its string form under allowstringify, under convertblessed for objects without TOJSON, and under allowbignum...

EUVD-2026-104563

Cpanel::JSON::XS versions from 3.0202 before 4.80 for Perl leak memory and retain overloaded objects when encoding values as strings in encodestringify. encodestringify writes a value in its string form under allowstringify, under convertblessed for objects without TOJSON, and under allowbignum...

EUVD-2026-104562

Cpanel::JSON::XS versions from 4.42 before 4.80 for Perl let input chunking change the decoded value of top-level numbers in incrparse. allownonref is enabled by default and incrparse inherits it. A top-level number, true, false or null has no closing delimiter, so the incremental parser decodes...

CVE-2026-110682

The Cpanel::JSON::XS Perl module versions from 4.42 before 4.80 is vulnerable to an interpretation conflict (CWE-436) within the incr_parse function. Because allow_nonref is enabled by default, the incremental parser decodes data as soon as it arrives; since top-level numbers, booleans, and nulls...

CVE-2026-110682 Cpanel::JSON::XS versions from 4.42 before 4.80 for Perl let input chunking change the decoded value of top-level numbers in incr_parse

Cpanel::JSON::XS versions from 4.42 before 4.80 for Perl let input chunking change the decoded value of top-level numbers in incrparse. allownonref is enabled by default and incrparse inherits it. A top-level number, true, false or null has no closing delimiter, so the incremental parser decodes...

CVE-2026-110682

Cpanel::JSON::XS versions from 4.42 before 4.80 for Perl let input chunking change the decoded value of top-level numbers in incrparse. allownonref is enabled by default and incrparse inherits it. A top-level number, true, false or null has no closing delimiter, so the incremental parser decodes...

EUVD-2026-104561

Cpanel::JSON::XS versions before 4.80 for Perl use the parent interpreter's scalars from a parser object cloned into a new ithread. A parser object holds its callbacks and its incremental parse buffer as raw scalar pointers. When a thread is created, these are copied into the new interpreter...

CVE-2026-110681

The Cpanel::JSON::XS Perl module, in versions before 4.80 , is vulnerable to a Use After Free (CWE-416) issue. The root cause is that a parser object holds callbacks and incremental parse buffers as raw scalar pointers. When a thread is created, these pointers are copied into the new interpreter ...

CVE-2026-110681 Cpanel::JSON::XS versions before 4.80 for Perl use the parent interpreter's scalars from a parser object cloned into a new ithread

Cpanel::JSON::XS versions before 4.80 for Perl use the parent interpreter's scalars from a parser object cloned into a new ithread. A parser object holds its callbacks and its incremental parse buffer as raw scalar pointers. When a thread is created, these are copied into the new interpreter...

CVE-2026-110681

Cpanel::JSON::XS versions before 4.80 for Perl use the parent interpreter's scalars from a parser object cloned into a new ithread. A parser object holds its callbacks and its incremental parse buffer as raw scalar pointers. When a thread is created, these are copied into the new interpreter...

CVE-2026-110680

The Cpanel::JSON::XS Perl module, versions 4.20 through 4.79 , is vulnerable to a write out of bounds error during canonical encoding in the encode_hv function. The issue occurs when a tied or threads::shared hash grows between a counting pass and a subsequent collection pass for sorting. Because...