Scan aborted, undefined symbol: libssh2_session_callback_set2

Issue

Client reports that scans are getting aborted. We checked and saw these errors:

WARNING [2025-05-16 01:33:54,509] imav.malwarelib.scan.mds.detached: Scan 7ac3e525709541bca6c226dcf8d9df8c was aborted: , /opt/alt/php-internal/usr/bin/php: symbol lookup error: /opt/alt/curlssl11/usr/lib64/libcurl.so.4: undefined symbol: libssh2_session_callback_set2
WARNING [2025-05-16 01:41:18,725] imav.malwarelib.scan.ai_bolit.detached: Scan was aborted: /opt/alt/php-internal/usr/bin/php: symbol lookup error: /opt/alt/curlssl11/usr/lib64/libcurl.so.4: undefined symbol: libssh2_session_callback_set2

Environment

• Imunify360
• CloudLinux
• Plesk

Solution

Upgrade package to alt-libssh211-1.11.1-1:

yum update alt-libssh211

Cause

alt-libssh211-1.11.0-2