CVE-2018-19464: Discuz! X3.4 allows XSS via admin.php because admincp/admincp_setting.php and template\default\common\footer.h

Routine

MEDIUM 4.8DOWNGRADE

CVE-2018-19464 is a medium-severity flaw (CVSS 4.8) affecting discuz\!. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Discuz! X3.4 allows XSS via admin.php because admincp/admincp_setting.php and template\default\common\footer.htm mishandles statcode field from third-party stats code.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-11-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dismall

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

Am I affected?

Timeline

2018-11-22 21:29 UTCPublished CVE record published
2026-06-17 01:49 UTCUpdated Record last modified

dismall discuz\! 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 discuz || rpm -q discuz || discuz --version

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

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

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

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

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-2018-19464?

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

Is CVE-2018-19464 being exploited?

CVE-2018-19464 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-2018-19464 affect?

CVE-2018-19464 affects discuz\!. Severity is medium (CVSS 4.8). Discuz! X3.4 allows XSS via admin.php because admincp/admincp_setting.php and template\default\common\footer.htm mishandles statcode field from third-party stats code.

How urgent is CVE-2018-19464?

Priority 28/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2018-14729 HIGH 8.8 UPGRADE The database backup feature in upload/source/admincp/admincp_db.php in Discuz! 2.5 and 3.4 allows remote attac

References

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