CVE-2026-1357

CRITICAL EXPLOITED

WPvivid Backup & Migration <0.9.123 - Unauthenticated RCE

Title source: llm

Description

The Migration, Backup, Staging – WPvivid Backup & Migration plugin for WordPress is vulnerable to Unauthenticated Arbitrary File Upload in versions up to and including 0.9.123. This is due to improper error handling in the RSA decryption process combined with a lack of path sanitization when writing uploaded files. When the plugin fails to decrypt a session key using openssl_private_decrypt(), it does not terminate execution and instead passes the boolean false value to the phpseclib library's AES cipher initialization. The library treats this false value as a string of null bytes, allowing an attacker to encrypt a malicious payload using a predictable null-byte key. Additionally, the plugin accepts filenames from the decrypted payload without sanitization, enabling directory traversal to escape the protected backup directory. This makes it possible for unauthenticated attackers to upload arbitrary PHP files to publicly accessible directories and achieve Remote Code Execution via the wpvivid_action=send_to_site parameter.

Exploits (7)

github WORKING POC 10 stars
by XiaomingX · pythonpoc
https://github.com/XiaomingX/data-cve-poc-py-v1/tree/main/2026/CVE-2026-1357
nomisec WORKING POC 5 stars
by cybertechajju · remote
https://github.com/cybertechajju/CVE-2026-1357-POC
nomisec WORKING POC 4 stars
by halilkirazkaya · remote
https://github.com/halilkirazkaya/CVE-2026-1357
nomisec WORKING POC 3 stars
by LucasM0ntes · remote
https://github.com/LucasM0ntes/POC-CVE-2026-1357
nomisec WORKING POC 1 stars
by itsismarcos · remote
https://github.com/itsismarcos/Exploit-CVE-2026-1357
nomisec WORKING POC
by rootdirective-sec · remote
https://github.com/rootdirective-sec/CVE-2026-1357-Lab
nomisec WORKING POC
by CVEs-Labs · poc
https://github.com/CVEs-Labs/CVE-2026-1357

Scores

CVSS v3 9.8
EPSS 0.0044
EPSS Percentile 62.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation Intel

VulnCheck KEV 2026-02-11

Classification

CWE
CWE-434
Status draft

Timeline

Published Feb 11, 2026
Tracked Since Feb 18, 2026