CVE-2018-25110
Apache Marked ReDoS 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.
INFO
Published Date :
May 23, 2025, 3:15 p.m.
Last Modified :
Aug. 13, 2025, 3:42 p.m.
Remotely Exploit :
Yes !
Source :
596c5446-0ce5-4ba2-aa66-48b3b757a647
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 596c5446-0ce5-4ba2-aa66-48b3b757a647 |
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-25110.
| URL | Resource |
|---|---|
| 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 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-25110 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-25110
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-25110 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-25110 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Aug. 13, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:marked_project:marked:*:*:*:*:*:node.js:*:* versions up to (excluding) 0.3.17 Added Reference Type Checkmarx: https://github.com/Checkmarx/Vulnerabilities-Proofs-of-Concept/tree/main/2018/CVE-2018-25110 Types: Exploit, Third Party Advisory Added Reference Type Checkmarx: https://github.com/markedjs/marked/commit/20bfc106013ed45713a21672ad4a34df94dcd485 Types: Patch Added Reference Type Checkmarx: https://github.com/markedjs/marked/issues/1070 Types: Issue Tracking, Third Party Advisory Added Reference Type Checkmarx: https://github.com/markedjs/marked/pull/1083 Types: Issue Tracking, Patch -
New CVE Received by 596c5446-0ce5-4ba2-aa66-48b3b757a647
May. 23, 2025
Action Type Old Value New Value Added 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. Added CVSS V4.0 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 Added CWE CWE-1333 Added Reference https://github.com/Checkmarx/Vulnerabilities-Proofs-of-Concept/tree/main/2018/CVE-2018-25110 Added Reference https://github.com/markedjs/marked/commit/20bfc106013ed45713a21672ad4a34df94dcd485 Added Reference https://github.com/markedjs/marked/issues/1070 Added Reference https://github.com/markedjs/marked/pull/1083