How severe is CVE-2018-19558?

CVE-2018-19558 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-19558 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-19558?

CVE-2018-19558 affects Arcms Project Arcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-19558?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-19558 published?

CVE-2018-19558 was published on 2018-11-26 and last updated on 2026-06-17.

CVE-2018-19558

CVE-2018-19558 is a critical-severity vulnerability in Arcms Project Arcms with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Arcms Project Arcms
Published: 2018-11-26
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-19558?: 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 severe is CVE-2018-19558?: CVE-2018-19558 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-19558 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-19558?: CVE-2018-19558 affects Arcms Project Arcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-19558?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-19558 published?: CVE-2018-19558 was published on 2018-11-26 and last updated on 2026-06-17.

References

https://github.com/assnr/arcms/issues/1

Affected products (1)

cpe:2.3:a:arcms_project:arcms:*:*:*:*:*:*:*:*

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