How severe is CVE-2018-25110?

CVE-2018-25110 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-25110 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-25110?

CVE-2018-25110 affects Marked Project Marked. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-25110?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2018-25110 have an EU (EUVD) identifier?

Yes. CVE-2018-25110 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21603.

When was CVE-2018-25110 published?

CVE-2018-25110 was published on 2025-05-23 and last updated on 2026-06-17.

CVE-2018-25110

CVE-2018-25110 is a high-severity vulnerability in Marked Project Marked with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1333.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 6.9
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2018-21603
Weakness: CWE-1333
Affected product: Marked Project Marked
Published: 2025-05-23
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2018-25110?: 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.
How severe is CVE-2018-25110?: CVE-2018-25110 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-25110 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-25110?: CVE-2018-25110 affects Marked Project Marked. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-25110?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2018-25110 have an EU (EUVD) identifier?: Yes. CVE-2018-25110 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21603.
When was CVE-2018-25110 published?: CVE-2018-25110 was published on 2025-05-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:marked_project:marked:*:*:*:*:*:node.js:*:*

More vulnerabilities in Marked Project Marked

CVE-2026-41680 — High (CVSS 7.5): Marked is a markdown parser and compiler. From 18.0.0 to 18.0.1, a critical Denial of Service (DoS) vulnerability…
CVE-2022-21681 — High (CVSS 7.5): Marked is a markdown parser and compiler. Prior to version 4.0.10, the regular expression `inline.reflinkSearch` may…
CVE-2022-21680 — High (CVSS 7.5): Marked is a markdown parser and compiler. Prior to version 4.0.10, the regular expression `block.def` may cause…
CVE-2017-16114 — High (CVSS 7.5): The marked module is vulnerable to a regular expression denial of service. Based on the information published in the…
CVE-2015-8854 — High (CVSS 7.5): The marked package before 0.3.4 for Node.js allows attackers to cause a denial of service (CPU consumption) via…
CVE-2014-3743 — Medium (CVSS 6.1): Multiple cross-site scripting (XSS) vulnerabilities in the Marked module before 0.3.1 for Node.js allow remote…

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