How severe is CVE-2018-18258?

CVE-2018-18258 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-2018-18258 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18258?

CVE-2018-18258 affects Bagesoft Bagecms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-18258?

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-2018-18258 published?

CVE-2018-18258 was published on 2018-10-11 and last updated on 2026-06-17.

CVE-2018-18258

CVE-2018-18258 is a critical-severity vulnerability in Bagesoft Bagecms 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-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Bagesoft Bagecms
Published: 2018-10-11
Last modified: 2026-06-17

Description

An issue was discovered in BageCMS 3.1.3. The attacker can execute arbitrary PHP code on the web server and can read any file on the web server via an index.php?r=admini/template/updateTpl&filename= URI.

Frequently asked questions

What is CVE-2018-18258?: An issue was discovered in BageCMS 3.1.3. The attacker can execute arbitrary PHP code on the web server and can read any file on the web server via an index.php?r=admini/template/updateTpl&filename= URI.
How severe is CVE-2018-18258?: CVE-2018-18258 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-2018-18258 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18258?: CVE-2018-18258 affects Bagesoft Bagecms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-18258?: 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-2018-18258 published?: CVE-2018-18258 was published on 2018-10-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bagesoft:bagecms:3.1.3:*:*:*:*:*:*:*

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CVE-2018-19560 — High (CVSS 8.8): BageCMS 3.1.3 has CSRF via upload/index.php?r=admini/admin/ownerUpdate to modify a user account.
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CVE-2018-14582 — High (CVSS 8.8): index.php?r=admini/admin/create in BageCMS V3.1.3 allows CSRF to add a background administrator account.
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CVE-2019-8421 — High (CVSS 7.2): upload/protected/modules/admini/views/post/index.php in BageCMS through 3.1.4 allows SQL Injection via the title or…
CVE-2023-37122 — Medium (CVSS 5.4): A stored cross-site scripting (XSS) vulnerability in Bagecms v3.1.0 allows attackers to execute arbitrary web scripts…

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