CVE-2018-25110 | THREATINT

Description

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.

Reserved 2025-05-19 | Published 2025-05-23 | Updated 2025-05-23 | Assigner Checkmarx

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-1333 Inefficient Regular Expression Complexity

Product status

Default status

unaffected

Any version before 0.3.17

affected

Credits

Josh Bruce reporter

References

github.com/markedjs/marked/issues/1070 issue-tracking

github.com/markedjs/marked/pull/1083 issue-tracking

github.com/...ommit/20bfc106013ed45713a21672ad4a34df94dcd485 patch

github.com/...roofs-of-Concept/tree/main/2018/CVE-2018-25110 exploit

cve.org (CVE-2018-25110)

nvd.nist.gov (CVE-2018-25110)

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