GHSA-rmmh-p597-ppvv

ghsaUSosv

Showdown vulnerable to Regular Expression Denial of Service (ReDoS) in link/anchor parsing

view advisory published 2024-02-26Licence: CC-BY-4.0

Showdownjs, versions <= 2.1.0, `anchors` subparser used to parse links has a nested regular expression which can lead to denial of service conditions given malicious input.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2024-1899US	—	0.81% (57th)	—	2024-02-26
An issue in the anchors subparser of Showdownjs versions <= 2.1.0 could allow a remote attacker to cause denial of service conditions.

references

External citations — patches, advisories, analysis.

https://github.com/showdownjs/showdownPACKAGE
https://nvd.nist.gov/vuln/detail/CVE-2024-1899ADVISORY
https://www.tenable.com/security/research/tra-2024-05WEB

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