CVE-2021-39500
CVE-2021-39500 is a high-severity vulnerability in Eyoucms 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-22.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (70th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Eyoucms
- Published:
- Last modified:
Description
Eyoucms 1.5.4 is vulnerable to Directory Traversal. Due to a lack of input data sanitizaton in param tpldir, filename, type, nid an attacker can inject "../" to escape and write file to writeable directories.
Frequently asked questions
- What is CVE-2021-39500?
- Eyoucms 1.5.4 is vulnerable to Directory Traversal. Due to a lack of input data sanitizaton in param tpldir, filename, type, nid an attacker can inject "../" to escape and write file to writeable directories.
- How severe is CVE-2021-39500?
- CVE-2021-39500 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 none, integrity high, and availability none.
- Is CVE-2021-39500 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-39500?
- CVE-2021-39500 affects Eyoucms. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-39500?
- 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-2021-39500 published?
- CVE-2021-39500 was published on 2021-09-07 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:eyoucms:eyoucms:1.5.4:*:*:*:*:*:*:*
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