CVE-2018-8957: CoverCMS v1.1.6 has XSS via the fourth input box to index.php, related to admina/mconfigs.inc.php.

Routine

MEDIUM 5.4DOWNGRADE

CVE-2018-8957 is a medium-severity flaw (CVSS 5.4) affecting covercms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CoverCMS v1.1.6 has XSS via the fourth input box to index.php, related to admina/mconfigs.inc.php.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-03-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: covercms project

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

Am I affected?

Timeline

2018-03-23 21:29 UTCPublished CVE record published
2026-06-17 02:05 UTCUpdated Record last modified

covercms project covercms DOWNGRADE

Affected: 1.1.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.1.6 (Debian / Ubuntu)

apt-cache madison covercms sudo apt install covercms=<VERSION_BEFORE_1.1.6> sudo apt-mark hold covercms

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

dnf --showduplicates list covercms sudo dnf downgrade covercms-<VERSION_BEFORE_1.1.6> sudo dnf versionlock add covercms

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-2018-8957?

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

Is CVE-2018-8957 being exploited?

CVE-2018-8957 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-2018-8957 affect?

CVE-2018-8957 affects covercms. Severity is medium (CVSS 5.4). CoverCMS v1.1.6 has XSS via the fourth input box to index.php, related to admina/mconfigs.inc.php.

How urgent is CVE-2018-8957?

Priority 38/100. Public exploit reference

Software pages

PHP vulnerabilities

References

← Back to latest CVEs