All versions of the package configobj are vulnerable to Regular Expression Denial of Service (ReDoS) via the validate function, using (.+?)\((.*)\). **Note:** This is only exploitable in the case of a developer, putting the offending value in a server side configuration file. CREATE(Triage):(User=admin) CVE-2023-26112 (https://nvd.nist.gov/vuln/detail/CVE-2023-26112)