CVE-2018-6591: Converse.js and Inverse.js through 3.3 allow remote attackers to obtain sensitive information because it is to

Q: How do I fix CVE-2018-6591?

converse.js: upgrade to newer than 3.3. Exact commands for each OS are on this page.

Q: Is CVE-2018-6591 being exploited?

CVE-2018-6591 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-2018-6591 affect?

CVE-2018-6591 affects converse.js. Severity is medium (CVSS 5.3). Converse.js and Inverse.js through 3.3 allow remote attackers to obtain sensitive information because it is too difficult to determine whether safe publication of private data was configured or even intended. For example, users might have a

Q: How urgent is CVE-2018-6591?

Priority 40/100. Remotely exploitable, no login, no user action

This month

MEDIUM 5.3REMOTEUPGRADE

CVE-2018-6591 is a medium-severity flaw (CVSS 5.3) affecting converse.js. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Converse.js and Inverse.js through 3.3 allow remote attackers to obtain sensitive information because it is too difficult to determine whether safe publication of private data was configured or even intended. For example, users might have an expectation that chatroom bookmarks are private, but the various interacting software components do not necessarily make that happen.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-200
Published	2018-02-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: conversejs

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

Am I affected?

Timeline

2018-02-19 14:29 UTCPublished CVE record published
2026-06-17 02:02 UTCUpdated Record last modified

conversejs converse.js UPGRADE

Affected: <= 3.3

Fixed in: newer than 3.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy converse.js || rpm -q converse.js || converse.js --version

2. UPGRADE to newer than 3.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade converse.js

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade converse.js

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2018-6591?

converse.js: upgrade to newer than 3.3. Exact commands for each OS are on this page.

Is CVE-2018-6591 being exploited?

CVE-2018-6591 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-2018-6591 affect?

CVE-2018-6591 affects converse.js. Severity is medium (CVSS 5.3). Converse.js and Inverse.js through 3.3 allow remote attackers to obtain sensitive information because it is too difficult to determine whether safe publication of private data was configured or even intended. For example, users might have a

How urgent is CVE-2018-6591?

Priority 40/100. Remotely exploitable, no login, no user action

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References

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