CVE-2017-16043: Shout is an IRC client

Q: How do I fix CVE-2017-16043?

shout: upgrade to 0.50.0. Exact commands for each OS are on this page.

Q: Is CVE-2017-16043 being exploited?

CVE-2017-16043 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2017-16043 affect?

CVE-2017-16043 affects shout. Severity is medium (CVSS 6.1). 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.

Q: How urgent is CVE-2017-16043?

Priority 37/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2017-16043 is a medium-severity flaw (CVSS 6.1) affecting shout. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-80, CWE-74
Published	2018-06-04
Last modified	2026-06-17

Publisher (CNA): HackerOne · Vendor: shout project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-06-04 19:29 UTCPublished CVE record published
2026-06-17 01:08 UTCUpdated Record last modified

shout project shout UPGRADE

Affected: >= 0.44.0 and < 0.50.0

Fixed in: 0.50.0

Safe to downgrade to: a release before 0.44.0

1. Check installed version

npm ls shout

2. UPGRADE to 0.50.0

npm install shout@">=0.50.0"

3. If no update is available yet, DOWNGRADE to a release before 0.44.0

npm view shout versions npm install shout@"<0.44.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-16043?

shout: upgrade to 0.50.0. Exact commands for each OS are on this page.

Is CVE-2017-16043 being exploited?

CVE-2017-16043 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-16043 affect?

CVE-2017-16043 affects shout. Severity is medium (CVSS 6.1). 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.

How urgent is CVE-2017-16043?

Priority 37/100. No elevated risk signals yet.

References

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