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GHSA-p9wx-2529-fp83

Marked allows Regular Expression Denial of Service (ReDoS) attacks

Source: GitHub Advisory Database (reviewed) Moderate CVE-2018-25110

Packages

EcosystemPackageAffectedFixed in
npm marked < 0.3.17 0.3.17

Details

As written in the advisory (Markdown source, shown as plain text).

Marked prior to version 0.3.17 is vulnerable to a Regular Expression Denial of Service (ReDoS) attack due to catastrophic backtracking in several regular expressions used for parsing HTML tags and markdown links. An attacker can exploit this vulnerability by providing specially crafted markdown input, such as deeply nested or repetitively structured brackets or tag attributes, which cause the parser to hang and lead to a Denial of Service.

References

External links from the advisory. They lead to third-party sites.