CVE-2021-43838
- Source
- https://cve.org/CVERecord?id=CVE-2021-43838
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43838.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-43838
- Aliases
- Published
- 2021-12-17T19:15:07.683Z
- Modified
- 2026-07-09T10:11:52.884820Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
jsx-slack is a library for building JSON objects for Slack Block Kit surfaces from JSX. In versions prior to 4.5.1 users are vulnerable to a regular expression denial-of-service (ReDoS) attack. If attacker can put a lot of JSX elements into
<blockquote>tag, an internal regular expression for escaping characters may consume an excessive amount of computing resources. jsx-slack v4.5.1 has patched to a regex for escaping blockquote characters. Users are advised to upgrade as soon as possible. - References
Affected packages
Git / github.com/yhatt/jsx-slack
Affected ranges
- Type
- GIT
- Repo
- https://github.com/yhatt/jsx-slack
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
{ "cpe": "cpe:2.3:a:jsx-slack_project:jsx-slack:*:*:*:*:*:node.js:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "4.5.2" } ], "source": [ "CPE_RANGE", "REFERENCES" ] }
Affected versions
v0.*
v0.1.0
v0.10.0
v0.10.1
v0.10.2
v0.11.0
v0.11.1
v0.12.0
v0.2.0
v0.3.0
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.5.0
v0.5.1
v0.6.0
v0.7.0
v0.8.0
v0.8.1
v0.9.0
v0.9.1
v0.9.2
v1.*
v1.0.0
v1.1.0
v1.2.0
v1.3.0
v1.3.1
v1.4.0
v1.5.0
v1.5.1
v1.6.0
v1.7.0
v2.*
v2.0.0
v2.1.0
v2.2.0
v2.2.1
v2.3.0
v2.4.0
v2.5.0
v2.5.1
v2.6.0
v3.*
v3.0.0
v4.*
v4.0.0
v4.1.0
v4.2.0
v4.2.1
v4.3.0
v4.4.0
v4.4.1
v4.4.2
v4.4.3
v4.5.0
v4.5.1