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CVE-2021-32832

ReDOS in Rocket.Chat

MEDIUM
6.5
CVSS Score
Published: August 30, 2021 at 08:55 PM UTC
Updated: June 17, 2026 at 03:53 AM UTC
1 product affected across 1 vendorChat Rocket Chat

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Severity
MEDIUM6.5
Exploit prediction
EPSS 2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Chat Rocket Chat· Rocket Chat
95%
v < 3.11.33.12.0 ≤ v < 3.12.2
Affected range stops below 3.11.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.12.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://docs.rocket.chat/guides/security/security-updates
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/RocketChat/Rocket.Chat/commit/4a0dce973e37ec3f56ca2231d6030511dbdd094c
x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/RocketChat/Rocket.Chat/releases/tag/3.11.3
x_refsource_CONFIRMExploitThird Party Advisory
Source: [email protected]
https://securitylab.github.com/advisories/GHSL-2020-310-redos-Rocket.Chat/

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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