CVE-2015-8854

Regular Expression Denial of Service in marked

7.5 HighFix available

The marked package before 0.3.4 for Node.js allows attackers to cause a denial of service (CPU consumption) via unspecified vectors that trigger a "catastrophic backtracking issue for the em inline rule," aka a "regular expression denial of service (ReDoS)."

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

4.42%Up 3.4 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2015-8854
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 7.8 HighAV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness: CWE-1333
Updated: 2026-11-02

CVE List No score

Record: CVE-2015-8854
Updated: 2026-11-02

EUVDEUVD-2017-0252 No score

Record: EUVD-2017-0252
Updated: 2026-11-03

GitHub AdvisoriesGHSA-hjcp-j389-59ff 7.5

Regular Expression Denial of Service in marked

Versions 0.3.3 and earlier of marked are affected by a regular expression denial of service ( ReDoS ) vulnerability when passed inputs that reach the em inline rule.

Recommendation

Update to version 0.3.4 or later.

Record: GHSA-hjcp-j389-59ff
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1333
Updated: 2026-11-02

OSV 7.5

Record: CVE-2015-8854
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2015-8854 7.5

Record: DEBIAN-CVE-2015-8854
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVGHSA-hjcp-j389-59ff 7.5

Regular Expression Denial of Service in marked

Versions 0.3.3 and earlier of marked are affected by a regular expression denial of service ( ReDoS ) vulnerability when passed inputs that reach the em inline rule.

Recommendation

Update to version 0.3.4 or later.

Record: GHSA-hjcp-j389-59ff
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1333
Updated: 2026-11-02

OSVUBUNTU-CVE-2015-8854 7.5

Record: UBUNTU-CVE-2015-8854
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`marked` npm	before 0.3.4	0.3.4
`node-marked` Debian:12	before 0.3.6+dfsg-1	0.3.6+dfsg-1
`node-marked` Debian:13	before 0.3.6+dfsg-1	0.3.6+dfsg-1
`node-marked` Debian:14	before 0.3.6+dfsg-1	0.3.6+dfsg-1
`node-marked` Ubuntu:16.04:LTS	All versions, plus listed versions 0.3.2+dfsg-1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2015-8854 is a high vulnerability (CVSS 7.5) in Marked Project Marked, published January 23, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.42%, the 91st percentile. Fixed in marked 0.3.4.

References

Show 12 moreShow less