CVE-2021-32832 json
ReDOS in Rocket.Chat
published 2021-08-30 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19570
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 76%
- public exploits
- 0
- none known
Summary
Rocket.Chat is an open-source fully customizable communications platform developed in JavaScript. In Rocket.Chat before versions 3.11.3, 3.12.2, and 3.13 an issue with certain regular expressions could lead potentially to Denial of Service. This was fixed in versions 3.11.3, 3.12.2, and 3.13.
Patch / fix
- rocket.chat rocket.chat 3.11.3, 3.12.2
Exploit prediction
1.62% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- securitylab.github.com https://securitylab.github.com/advisories/GHSL-2020-310-redos-Rocket.Chat/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
Affected products
- RocketChat Rocket.Chat
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
github.com
/RocketChat/Rocket.Chat/commit/4a0dce973e37ec3f56ca2231d6030511dbdd094c
patch, third-party-advisory
-
securitylab.github.com
/advisories/GHSL-2020-310-redos-Rocket.Chat/
exploit, third-party-advisory
-
docs.rocket.chat
/guides/security/security-updates
vendor-advisory
-
github.com
/RocketChat/Rocket.Chat/releases/tag/3.11.3
release-notes, third-party-advisory
Sources
- CVE List CVE-2021-32832
- NVD CVE-2021-32832
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.