CVE-2018-19558: An issue was discovered in arcms through 2018-03-19

Q: How do I fix CVE-2018-19558?

arcms: upgrade to newer than 2018-03-19. Exact commands for each OS are on this page.

Q: Is CVE-2018-19558 being exploited?

CVE-2018-19558 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-2018-19558 affect?

CVE-2018-19558 affects arcms. Severity is critical (CVSS 9.8). An issue was discovered in arcms through 2018-03-19. SQL injection exists via the json/newslist limit parameter because of ctl/main/Json.php, ctl/main/service/Data.php, and comp/Db/Mysql.php.

Q: How urgent is CVE-2018-19558?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2018-19558 is a critical-severity flaw (CVSS 9.8) affecting arcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in arcms through 2018-03-19. SQL injection exists via the json/newslist limit parameter because of ctl/main/Json.php, ctl/main/service/Data.php, and comp/Db/Mysql.php.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-89
Published	2018-11-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: arcms project

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

Am I affected?

Timeline

2018-11-26 07:29 UTCPublished CVE record published
2026-06-17 01:49 UTCUpdated Record last modified

arcms project arcms UPGRADE

Affected: <= 2018-03-19

Fixed in: newer than 2018-03-19

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2018-03-19 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade arcms

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-2018-19558?

arcms: upgrade to newer than 2018-03-19. Exact commands for each OS are on this page.

Is CVE-2018-19558 being exploited?

CVE-2018-19558 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-2018-19558 affect?

CVE-2018-19558 affects arcms. Severity is critical (CVSS 9.8). An issue was discovered in arcms through 2018-03-19. SQL injection exists via the json/newslist limit parameter because of ctl/main/Json.php, ctl/main/service/Data.php, and comp/Db/Mysql.php.

How urgent is CVE-2018-19558?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities · MySQL vulnerabilities

Related CVEs

CVE-2018-19557 CRITICAL 9.8 UPGRADE An issue was discovered in arcms through 2018-03-19

References

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