CVE-2021-3649
Inefficient Regular Expression Complexity in chatwoot/chatwoot
chatwoot 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 chatwoot/chatwoot
chatwoot is vulnerable to Inefficient Regular Expression Complexity
- Record
CVE-2021-3649- 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-2021-26945
chatwoot is vulnerable to Inefficient Regular Expression Complexity
- Record
EUVD-2021-26945- 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-964r-mpxx-74p7
chatwoot is vulnerable to Inefficient Regular Expression Complexity
chatwoot is vulnerable to Inefficient Regular Expression Complexity
- Record
GHSA-964r-mpxx-74p7- 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 - Weakness
- CWE-400, CWE-697
- Updated
- 2026-11-02
NVD
chatwoot is vulnerable to Inefficient Regular Expression Complexity
- Record
CVE-2021-3649- 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
chatwoot is vulnerable to Inefficient Regular Expression Complexity
- Record
CVE-2021-3649- 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
Affected products
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-2021-3649 is a high vulnerability (CVSS 7.5) in Chatwoot, published July 16, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.22%, the 68th percentile. No source names a fixed version.