Migration, Backup, Staging <= 0.9.123 - Unauthenticated Arbitrary File Upload
CVSS v3
9.8
CRITICAL
EPSS Score
22.4%
exploit probability
CISA KEV
No
known exploited
Exploitation
none
SSVC status
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 A
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 A
Active exploitation of CVE-2026-1357 has not been confirmed. The EPSS score is 22.4%, indicating the estimated probability of exploitation in the next 30 days.
CVE-2026-1357 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.
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Ranked by exploit probability (EPSS).