CVE catalog
CVE-2021-32821
mootools: CVE-2021-32821
- Severity
- Low
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.65% · Oct 27, 2026
MooTools is a collection of JavaScript utilities for JavaScript developers. All known versions include a CSS selector parser that is vulnerable to Regular Expression Denial of Service (ReDoS). An attack requires that an attacker can inject a string into a CSS selector at runtime, which is quite common with e.g. jQuery CSS selectors. No patches are available for this issue.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | mootools | sid | 1.4.5~debian1-3 | vulnerable |
| Debian | mootools | forky | 1.4.5~debian1-3 | vulnerable |
| Debian | mootools | trixie | 1.4.5~debian1-3 | vulnerable |
| Debian | mootools | bookworm | 1.4.5~debian1-3 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | mootools | source | sid | (unfixed) | unimportant | Not reported | [1032664] |
| Debian | mootools | source | forky | (unfixed) | unimportant | Not reported | [1032664] |
| Debian | mootools | source | trixie | (unfixed) | unimportant | Not reported | [1032664] |
| Debian | mootools | source | bookworm | (unfixed) | unimportant | Not reported | [1032664] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libjs-mootools]Affected
Source package: [mootools]
Details (2)
1.4.5~debian1-3· all · bookwormAffected
dsa · mootools · debian · bookworm; dsa · mootools · debian · 12
1.4.5~debian1-3· all · bookwormAffected
dsa · mootools · debian · bookworm; dsa · mootools · debian · 12
[Debian 13 (Trixie)]
- [libjs-mootools]Affected
Source package: [mootools]
Details (2)
1.4.5~debian1-3· all · trixieAffected
dsa · mootools · debian · 13
1.4.5~debian1-3· all · trixieAffected
dsa · mootools · debian · 13
Observed: