CVE-2023-0899: The Steveas WP Live Chat Shoutbox WordPress plugin through 1.4.2 does not sanitise and escape a parameter befo

Q: How do I fix CVE-2023-0899?

wp live chat shoutbox: upgrade to newer than 1.4.2. Exact commands for each OS are on this page.

Q: Is CVE-2023-0899 being exploited?

CVE-2023-0899 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-2023-0899 affect?

CVE-2023-0899 affects wp live chat shoutbox. Severity is medium (CVSS 6.1). The Steveas WP Live Chat Shoutbox WordPress plugin through 1.4.2 does not sanitise and escape a parameter before outputting it back in the Shoutbox, leading to Stored Cross-Site Scripting which could be used against high privilege users suc

Q: How urgent is CVE-2023-0899?

Priority 36/100. Public exploit reference

Routine

MEDIUM 6.1UPGRADE

CVE-2023-0899 is a medium-severity flaw (CVSS 6.1) affecting wp live chat shoutbox. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Steveas WP Live Chat Shoutbox WordPress plugin through 1.4.2 does not sanitise and escape a parameter before outputting it back in the Shoutbox, leading to Stored Cross-Site Scripting which could be used against high privilege users such as admins.

Why this priority

Public exploit reference

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	0.5% (top 60%)
CISA exploited list	No
Published	2023-04-24
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: wp live chat shoutbox project

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

Am I affected?

Timeline

2023-04-24 19:15 UTCPublished CVE record published
2026-06-17 05:26 UTCUpdated Record last modified

wp live chat shoutbox project wp live chat shoutbox UPGRADE

Affected: <= 1.4.2

Fixed in: newer than 1.4.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wp-live-chat-shoutbox || rpm -q wp-live-chat-shoutbox || wp-live-chat-shoutbox --version

2. UPGRADE to newer than 1.4.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wp-live-chat-shoutbox

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wp-live-chat-shoutbox

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-2023-0899?

wp live chat shoutbox: upgrade to newer than 1.4.2. Exact commands for each OS are on this page.

Is CVE-2023-0899 being exploited?

CVE-2023-0899 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-2023-0899 affect?

CVE-2023-0899 affects wp live chat shoutbox. Severity is medium (CVSS 6.1). The Steveas WP Live Chat Shoutbox WordPress plugin through 1.4.2 does not sanitise and escape a parameter before outputting it back in the Shoutbox, leading to Stored Cross-Site Scripting which could be used against high privilege users suc

How urgent is CVE-2023-0899?

Priority 36/100. Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2023-1020 CRITICAL 9.8 UPGRADE The Steveas WP Live Chat Shoutbox WordPress plugin through 1.4.2 does not sanitise and escape a parameter befo

References

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