CVE-2021-3649 json
Inefficient Regular Expression Complexity in chatwoot/chatwoot
published 2021-07-16 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26945
- cvss
- 7.5
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 68%
- public exploits
- 0
- none known
Summary
chatwoot is vulnerable to Inefficient Regular Expression Complexity
Patch / fix
- chatwoot chatwoot 1.18.0
Exploit prediction
1.22% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- huntr.dev https://huntr.dev/bounties/1625088985607-chatwoot/chatwoot referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- chatwoot chatwoot/chatwoot
Classification
- Weakness
-
- CWE-1333 Inefficient Regular Expression Complexity
References
-
github.com
/chatwoot/chatwoot/commit/aa7db90cd2d23dbcf22a94f1e4c100dd909e2172
patch, third-party-advisory
-
huntr.dev
/bounties/1625088985607-chatwoot/chatwoot
exploit, issue-tracking, patch, third-party-advisory
Sources
- CVE List CVE-2021-3649
- NVD CVE-2021-3649
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.