How severe is CVE-2018-9134?

CVE-2018-9134 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-9134 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-9134?

CVE-2018-9134 affects Dedecms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-9134?

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-2018-9134 published?

CVE-2018-9134 was published on 2018-03-30 and last updated on 2026-06-17.

CVE-2018-9134

CVE-2018-9134 is a high-severity vulnerability in Dedecms with a CVSS 3.x base score of 8.8. 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Dedecms
Published: 2018-03-30
Last modified: 2026-06-17

Description

file_manage_control.php in DedeCMS 5.7 has CSRF in an fmdo=rename action, as demonstrated by renaming an arbitrary file under uploads/userup to a .php file under the web root to achieve PHP code execution. This uses the oldfilename and newfilename parameters.

Frequently asked questions

What is CVE-2018-9134?: file_manage_control.php in DedeCMS 5.7 has CSRF in an fmdo=rename action, as demonstrated by renaming an arbitrary file under uploads/userup to a .php file under the web root to achieve PHP code execution. This uses the oldfilename and newfilename parameters.
How severe is CVE-2018-9134?: CVE-2018-9134 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-9134 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-9134?: CVE-2018-9134 affects Dedecms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-9134?: 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-2018-9134 published?: CVE-2018-9134 was published on 2018-03-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dedecms:dedecms:5.7:*:*:*:*:*:*:*

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