CVE-2026-110681: Use After Free

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-2026-110682: Interpretation Conflict

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-2026-110685: Missing Release of Memory after Effective Lifetime

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...

PT-2026-117578

Name of the Vulnerable Software and Affected Versions Cpanel::JSON::XS versions prior to 4.80 Description When a parser object is cloned into a new ithread, the software uses scalars from the parent interpreter. The parser object stores its incremental parse buffer and callbacks as raw scalar...

PT-2026-117575

Name of the Vulnerable Software and Affected Versions Cpanel::JSON::XS versions 4.28 through 4.79 Description A memory leak occurs when decoding JSON with duplicate keys while using the dupkeys as arrayref option in the decode hv function. In this scenario, values for duplicate object keys are...

PT-2026-117576

Name of the Vulnerable Software and Affected Versions Cpanel::JSON::XS versions prior to 4.80 Description An issue exists where memory exhaustion can occur due to the buffering of incremental input beyond the max size limit within the incr parse function. The parser appends each data chunk to its...

PT-2026-117579

Name of the Vulnerable Software and Affected Versions Cpanel::JSON::XS versions 4.42 through 4.79 Description Input chunking can alter the decoded value of top-level numbers within the incr parse function. Because allow nonref is enabled by default and inherited by incr parse, top-level numbers,...

PT-2026-117580

Name of the Vulnerable Software and Affected Versions Cpanel::JSON::XS versions 3.0202 through 4.79 Description Memory leak occurs when encoding values as strings in the encode stringify function. The issue arises when the function writes a value in string form under allow stringify, convert...

PT-2026-117584

Name of the Vulnerable Software and Affected Versions Cpanel::JSON::XS versions 4.51 through 4.79 Description An issue exists where the software allows quadratic CPU usage during the processing of non-ASCII JSON data. This occurs because the incr parse function decodes each buffered value using a...

CVE-2026-110687: Improper Handling of Unicode Encoding

Cpanel::JSON::XS versions from 4.43 before 4.80 for Perl misorder byte-string keys during canonical encoding in utf16cmp. canonical sorts keys by UTF-16 code units. When any key in a hash is UTF-8 flagged, every key is decoded as UTF-8 for the comparison, including byte-string keys that the encod...

CVE-2026-110688: Inefficient Algorithmic Complexity

Cpanel::JSON::XS versions from 4.51 before 4.80 for Perl allow quadratic CPU use by revalidating the remaining buffer per value in incrparse. At the first non-ASCII byte in a string, the decoder validates UTF-8 from there to the end of its input. incrparse decodes each buffered value with a fresh...

PT-2026-117574

Name of the Vulnerable Software and Affected Versions Cpanel::JSON::XS versions prior to 4.80 Description Memory exhaustion can occur when encoding exponent notation as full decimal digits while using the allow bignum setting. When allow bignum is enabled, JSON numbers with fractions or exponents...

CVE-2026-41940

CVE-2026-41940 - cPanel/WHM Auth Bypass Scanner & Exploit Tool cPanel/WHM Authentication Bypass Scanner & Exploit Tool for CVE-2026-41940 ⚠️ Disclaimer This tool is provided for educational purposes and authorized security testing only. By using this tool, you agree that: You will only test system...

CVE-2026-41940

CVE-2026-41940: cPanel/WHM Authentication Bypass Single & Multi-Target Disclaimer: This document and the associated script exploit.py are provided strictly for educational purposes, security research, and authorized penetration testing. Do not use this software against systems you do not own or d...

CVE-2026-41940

CVE-2026-41940: cPanel/WHM Authentication Bypass Single & Multi-Target Disclaimer: This document and the associated script exploit.py are provided strictly for educational purposes, security research, and authorized penetration testing. Do not use this software against systems you do not own or d...

Exploit for Missing Authentication for Critical Function in Cpanel

CVE-2026-41940 ⚠ This tool is created solely for education...

cPanelSniper

cPanelSniper CVE-2026-41940 — cPanel & WHM Authentication Bypass via Session-File CRLF Injection 4-stage exploit chain · Interactive WHM Shell · Bulk scanner · Pipeline ready · stdlib only Overview cPanelSniper is a focused exploitation framework for CVE-2026-41940 , a critical authentication...

CVE-2026-93699

Argument injection in WP Toolkit for cPanel allows local users to execute arbitrary code as other accounts on the same server...

CVE-2026-93699

Argument injection in WP Toolkit for cPanel allows local users to execute arbitrary code as other accounts on the same server...

CVE-2026-93699

An argument injection vulnerability in WP Toolkit for cPanel allows local users to execute arbitrary code as other accounts on the same server. The root cause is identified as Improper Neutralization of Argument Delimiters in a Command (CWE-88) . The impact includes high severity for confidential...