CVE-2013-4110: Cryptocat has an Unspecified Chat Participant User List Disclosure

This month

MEDIUM 5.3REMOTEMITIGATE

CVE-2013-4110 is a medium-severity flaw (CVSS 5.3) affecting cryptocat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cryptocat has an Unspecified Chat Participant User List Disclosure

Why this priority

Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-200
Published	2019-11-05
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: cryptocat project

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-11-05 13:15 UTCPublished CVE record published
2026-06-16 23:56 UTCUpdated Record last modified

cryptocat project cryptocat MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cryptocat || rpm -q cryptocat || cryptocat --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2013-4110?

cryptocat: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-4110 being exploited?

CVE-2013-4110 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-2013-4110 affect?

CVE-2013-4110 affects cryptocat. Severity is medium (CVSS 5.3). Cryptocat has an Unspecified Chat Participant User List Disclosure

How urgent is CVE-2013-4110?

Priority 44/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2013-4109 MEDIUM 6.1 DOWNGRADE An unspecified cross-site scripting (XSS) vulnerability exists in Cryptocat Message Handling 1.1.165.
CVE-2013-4108 CRITICAL 9.8 DOWNGRADE Multiple unspecified vulnerabilities in Cryptocat Project Cryptocat 2.0.18 have unknown impact and attack vect
CVE-2013-4107 MEDIUM 6.1 UPGRADE Cryptocat before 2.0.22: cryptocat.js handlePresence() has cross site scripting
CVE-2013-4106 MEDIUM 6.1 UPGRADE A Cross-site scripting (XSS) vulnerability exists in Conversation Overview Nickname in Cryptocat before 2.0.22
CVE-2013-4105 HIGH 7.5 UPGRADE Cryptocat before 2.0.22 has Multiparty Encryption Scheme Information Disclosure

References

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