CVE-2018-25110 - CVE House
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Status published Medium CVE-2018-25110

Regular Expression Denial of Service (ReDoS) in markedjs/marked

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Josh Bruce

References

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Affected Vendor

marked project

View all reports →

Affected Software

marked
Vulnerable Versions:
0

Timeline

Official Publish: May 23rd, 2025
Last Modified: May 23rd, 2025
Added to House: July 20th, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-1333

MITRE ATT&CK TTPs

T1499 Endpoint Denial of Service
Impact
T1190 Exploit Public-Facing Application
Initial Access
T1496 Resource Hijacking
Impact
T1562 Impair Defenses
Defense Evasion
T1070 Indicator Removal on Host
Defense Evasion