CVE-2021-3794
Inefficient Regular Expression Complexity in vuelidate/vuelidate
vuelidate is vulnerable to Inefficient Regular Expression Complexity
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Inefficient Regular Expression Complexity in vuelidate/vuelidate
vuelidate is vulnerable to Inefficient Regular Expression Complexity
- Record
CVE-2021-3794- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1333
- Updated
- 2026-11-02
EUVDEUVD-2021-2119
vuelidate is vulnerable to Inefficient Regular Expression Complexity
- Record
EUVD-2021-2119- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vvf2-ppj9-pp49
Inefficient Regular Expression Complexity in vuelidate
vuelidate is a simple, lightweight model-based validation for Vue.js 2.x & 3.0. A ReDoS (regular expression denial of service) flaw was found in the @vuelidate/validators package. An attacker that is able to provide crafted input to the url(input) function may cause an application to consume an excessive amount of CPU.
- Record
GHSA-vvf2-ppj9-pp49- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400, CWE-697, CWE-1333
- Updated
- 2026-11-02
NVD
vuelidate is vulnerable to Inefficient Regular Expression Complexity
- Record
CVE-2021-3794- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-1333
- Updated
- 2026-11-02
OSV
vuelidate is vulnerable to Inefficient Regular Expression Complexity
- Record
CVE-2021-3794- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-vvf2-ppj9-pp49
Inefficient Regular Expression Complexity in vuelidate
vuelidate is a simple, lightweight model-based validation for Vue.js 2.x & 3.0. A ReDoS (regular expression denial of service) flaw was found in the @vuelidate/validators package. An attacker that is able to provide crafted input to the url(input) function may cause an application to consume an excessive amount of CPU.
- Record
GHSA-vvf2-ppj9-pp49- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1333, CWE-400, CWE-697
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
@vuelidate/validatorsnpm | through 2.0.0-alpha.21 | 2.0.0-alpha.22 |
@vuelidate/validatorsnpm | before 2.0.0-alpha.22 | 2.0.0-alpha.22 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-3794 is a high vulnerability (CVSS 7.5) in Vuelidate Vuelidate/vuelidate, published September 15, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.22%, the 69th percentile. Fixed in @vuelidate/validators 2.0.0-alpha.22.