4 CVE-2025-27220
In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method.
https://nvd.nist.gov/vuln/detail/CVE-2025-27220
Categories
CWE-1333 : Inefficient Regular Expression Complexity
Some regular expression engines have a feature called "backtracking". If the token cannot match, the engine "backtracks" to a position that may result in a different token that can match.
References
cve@mitre.org
| https://github.com/rubysec/ruby-advisory-db/blob/master/gems/cgi/CVE-2025-272... Third Party Advisory |
| https://hackerone.com/reports/2890322 Permissions Required |
CPE
| cpe | start | end |
|---|---|---|
| Configuration 1 | ||
| AND | ||
| cpe:2.3:a:ruby-lang:cgi:*:*:*:*:*:ruby:*:* | < 0.3.5.1 | |
| cpe:2.3:a:ruby-lang:cgi:*:*:*:*:*:ruby:*:* | >= 0.4.0 | < 0.4.2 |
| cpe:2.3:a:ruby-lang:cgi:0.3.6:*:*:*:*:ruby:*:* | ||
| Running on/with | ||
| cpe:2.3:a:ruby-lang:ruby:3.1.0:*:*:*:*:*:*:* | ||
| cpe:2.3:a:ruby-lang:ruby:3.2.0:*:*:*:*:*:*:* | ||
REMEDIATION
EXPLOITS
Exploit-db.com
| id | description | date | |
|---|---|---|---|
| No known exploits | |||
POC Github
| Url |
|---|
| No known exploits |
Other Nist (github, ...)
| Url |
|---|
| No known exploits |
CAPEC
Common Attack Pattern Enumerations and Classifications
| id | description | severity |
|---|---|---|
| 492 | Regular Expression Exponential Blowup |
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