An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.10 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. A regular expression used for handling user input (notes, comments, etc) was susceptible to catastrophic backtracking that could cause a DOS attack.
{
"versions": [
{
"introduced": "12.10.0"
},
{
"fixed": "14.3.6"
},
{
"introduced": "12.10.0"
},
{
"fixed": "14.3.6"
},
{
"introduced": "14.4.0"
},
{
"fixed": "14.4.4"
},
{
"introduced": "14.4.0"
},
{
"fixed": "14.4.4"
},
{
"introduced": "14.5.0"
},
{
"fixed": "14.5.2"
},
{
"introduced": "14.5.0"
},
{
"fixed": "14.5.2"
}
]
}