CVE-2024-30884: Reflected Cross-Site Scripting (XSS) vulnerability in Discuz! version X3.4 20220811, allows remote attackers t

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HIGH 7.1DOWNGRADE

CVE-2024-30884 is a high-severity flaw (CVSS 7.1) affecting discuzx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Reflected Cross-Site Scripting (XSS) vulnerability in Discuz! version X3.4 20220811, allows remote attackers to execute arbitrary code and obtain sensitive information via crafted payload to the primarybegin parameter in the misc.php component.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-04-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: discuz

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

Am I affected?

Timeline

2024-04-11 05:15 UTCPublished CVE record published
2026-06-17 07:27 UTCUpdated Record last modified

discuz discuzx DOWNGRADE

Affected: 3.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.4 (Debian / Ubuntu)

apt-cache madison discuzx sudo apt install discuzx=<VERSION_BEFORE_3.4> sudo apt-mark hold discuzx

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list discuzx sudo dnf downgrade discuzx-<VERSION_BEFORE_3.4> sudo dnf versionlock add discuzx

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-2024-30884?

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

Is CVE-2024-30884 being exploited?

CVE-2024-30884 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-2024-30884 affect?

CVE-2024-30884 affects discuzx. Severity is high (CVSS 7.1). Reflected Cross-Site Scripting (XSS) vulnerability in Discuz! version X3.4 20220811, allows remote attackers to execute arbitrary code and obtain sensitive information via crafted payload to the primarybegin parameter in the misc.php compon

How urgent is CVE-2024-30884?

Priority 41/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

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