CVEvulnerability
CVE-2018-25110
6.9 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2025-05-23
- Last modified
- 2026-06-17
- Assigner
- 596c5446-0ce5-4ba2-aa66-48b3b757a647
- CVSS 4.0 (596c5446-0ce5-4ba2-aa66-48b3b757a647)
- 6.9 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-1333
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.
Affected configurations
• marked project marked (< 0.3.17)
Related
Weakness · CWE (1)
- CWE-1333 Inefficient Regular Expression Complexity weakness
References
- https://github.com/Checkmarx/Vulnerabilities-Proofs-of-Concept/tree/main/2018/CVE-2018-25110 Exploit, Third Party Advisory
- https://github.com/markedjs/marked/commit/20bfc106013ed45713a21672ad4a34df94dcd485 Patch
- https://github.com/markedjs/marked/issues/1070 Issue Tracking, Third Party Advisory
- https://github.com/markedjs/marked/pull/1083 Issue Tracking, Patch