CVE-2023-49821: Cross-Site Request Forgery (CSRF) vulnerability in LiveChat LiveChat – WP live chat plugin for WordPress.This

Q: How do I fix CVE-2023-49821?

livechat: upgrade to newer than 4.5.15. Exact commands for each OS are on this page.

Q: Is CVE-2023-49821 being exploited?

CVE-2023-49821 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-2023-49821 affect?

CVE-2023-49821 affects livechat. Severity is medium (CVSS 5.4). Cross-Site Request Forgery (CSRF) vulnerability in LiveChat LiveChat – WP live chat plugin for WordPress.This issue affects LiveChat – WP live chat plugin for WordPress: from n/a through 4.5.15.

Q: How urgent is CVE-2023-49821?

Priority 24/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2023-49821 is a medium-severity flaw (CVSS 5.4) affecting livechat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-Site Request Forgery (CSRF) vulnerability in LiveChat LiveChat – WP live chat plugin for WordPress.This issue affects LiveChat – WP live chat plugin for WordPress: from n/a through 4.5.15.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-352
Published	2023-12-18
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: livechat

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

Am I affected?

Timeline

2023-12-18 23:15 UTCPublished CVE record published
2026-06-17 06:36 UTCUpdated Record last modified

livechat livechat UPGRADE

Affected: <= 4.5.15

Fixed in: newer than 4.5.15

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 4.5.15 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade livechat

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade livechat

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-2023-49821?

livechat: upgrade to newer than 4.5.15. Exact commands for each OS are on this page.

Is CVE-2023-49821 being exploited?

CVE-2023-49821 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-2023-49821 affect?

CVE-2023-49821 affects livechat. Severity is medium (CVSS 5.4). Cross-Site Request Forgery (CSRF) vulnerability in LiveChat LiveChat – WP live chat plugin for WordPress.This issue affects LiveChat – WP live chat plugin for WordPress: from n/a through 4.5.15.

How urgent is CVE-2023-49821?

Priority 24/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

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CVE-2004-2566 MEDIUM 4.3 MITIGATE MITIGATE Multiple cross-site scripting (XSS) vulnerabilities in LiveWorld products, possibly including (1) LiveForum, (

References

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