What is CVE-2017-16043?

CVE-2017-16043 is a medium-severity vulnerability in HackerOne Shout Node Module, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 6.1/10. Published 2018-06-04.

How severe is CVE-2017-16043?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2017-16043 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in HackerOne Shout Node Module

CVE-2017-16043

Shout is an IRC client. Because the `/topic` command in messages is unescaped, attackers have the ability to inject HTML scripts that will run in the victim's browser. Affects shout >=0.44.0 <=0.49.3.

Published 2018-06-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.010 (61.9th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

HackerOne Shout Node Module — versions >=0.44.0 <=0.49.3
Shout Project

Weakness classification (CWE)

Public proof-of-concept exploits

ossf-cve-benchmark/CVE-2017-16043

References

github.com/erming/shout/pull/344 (Third Party Advisory)
nodesecurity.io/advisories/322 (Third Party Advisory)

Frequently asked questions

What is CVE-2017-16043?: CVE-2017-16043 is a medium-severity vulnerability in HackerOne Shout Node Module, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 6.1/10. Published 2018-06-04.
How severe is CVE-2017-16043?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2017-16043 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.