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CVE-2018-11615

26
FAUCET Score

CVE-2018-11615 is a denial-of-service vulnerability affecting npm mosca 2.8.1, stemming from improper handling of crafted regular expressions in topic processing. This allows unauthenticated remote attackers to crash the MQTT broker, denying service to legitimate users. With a CVSS score of 7.5 (High), it presents a significant availability risk due to its network-based attack vector and low attack complexity. While no public exploits (Metasploit, Nuclei, ExploitDB) are currently available and there's minimal community discussion or media coverage, its EPSS score indicates a higher than average potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
2.8.1CPE matchmatch criteria
cpe:2.3:a:mosca_project:mosca:2.8.1:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.35%
Probability of exploitation in next 30 days
EPSS Percentile
87.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0335 is in the 78th percentile among its peer group of 51,466 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa
Product: moscaFixed in: 2.8.2

Vendor Advisories (1)

npmGHSA-wqg7-vrj7-v82hhigh

Mosca REDoS Vulnerability

Aug 31, 2018

References

zerodayinitiative.com / advisories/ZDI-18-583
Third Party AdvisoryVDB Entry