How severe is CVE-2018-12988?

CVE-2018-12988 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-12988 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-12988?

CVE-2018-12988 affects Greencms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-12988?

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

When was CVE-2018-12988 published?

CVE-2018-12988 was published on 2018-06-29 and last updated on 2026-06-17.

CVE-2018-12988

CVE-2018-12988 is a high-severity vulnerability in Greencms with a CVSS 3.x base score of 7.5. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Greencms
Published: 2018-06-29
Last modified: 2026-06-17

Description

GreenCMS 2.3.0603 has an arbitrary file download vulnerability via an index.php?m=admin&c=media&a=downfile URI.

Frequently asked questions

What is CVE-2018-12988?: GreenCMS 2.3.0603 has an arbitrary file download vulnerability via an index.php?m=admin&c=media&a=downfile URI.
How severe is CVE-2018-12988?: CVE-2018-12988 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-12988 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-12988?: CVE-2018-12988 affects Greencms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-12988?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-12988 published?: CVE-2018-12988 was published on 2018-06-29 and last updated on 2026-06-17.

References

https://github.com/GreenCMS/GreenCMS/issues/111

Affected products (1)

cpe:2.3:a:greencms:greencms:2.3.0603:*:*:*:*:*:*:*

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