A new updated xterm package with the fix for the CVE-2021-27135 within CloudLinux OS 6 ELS has been scheduled for gradual rollout from our production repository.
Rollout slot: 6
Rolled out to: 0.1%
ETA for 100% rollout: September 21
xterm-253-2.el6.cloudlinux.els
yum update xterm*
yum update xterm* --enablerepo=cloudlinux-rollout-6-bypass