CVE-2021-22880
HIGH7.5EPSS 2.6%Active Record subject to Regular Expression Denial-of-Service (ReDoS)
Published: 3/2/2021Modified: 4/28/2026
Description
The PostgreSQL adapter in Active Record before 6.1.2.1, 6.0.3.5, 5.2.4.5 suffers from a regular expression denial of service (REDoS) vulnerability. Carefully crafted input can cause the input validation in the `money` type of the PostgreSQL adapter in Active Record to spend too much time in a regular expression, resulting in the potential for a DoS attack. This only impacts Rails applications that are using PostgreSQL along with money type columns that take user input.
Affected packages (3)
- Debian/railsfrom 0, < 2:6.0.3.5+dfsg-1
- Debian/railsfrom 0, < 2:5.2.2.1+dfsg-1+deb10u3
- RubyGems/activerecord>= 5.0.0, < 5.2.4.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (11)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-22880
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2021-22880
- WEBhttps://discuss.rubyonrails.org/t/cve-2021-22880-possible-dos-vulnerability-in-active-record-postgresql-adapter/77129
- WEBhttps://github.com/rails/rails
- WEBhttps://github.com/rubysec/ruby-advisory-db/blob/master/gems/activerecord/CVE-2021-22880.yml
- WEBhttps://groups.google.com/g/rubyonrails-security/c/ZzUqCh9vyhI
- WEBhttps://hackerone.com/reports/1023899
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/MO5OJ3F4ZL3UXVLJO6ECANRVZBNRS2IH
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/XQ3NS4IBYE2I3MVMGAHFZBZBIZGHXHT3
- WEBhttps://security.netapp.com/advisory/ntap-20210805-0009
- WEBhttps://www.debian.org/security/2021/dsa-4929