How severe is CVE-2021-30048?

CVE-2021-30048 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-30048 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30048?

CVE-2021-30048 affects Novel Boutique House-plus Project Novel Boutique House-plus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30048?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-30048 published?

CVE-2021-30048 was published on 2021-04-29 and last updated on 2026-06-17.

CVE-2021-30048

CVE-2021-30048 is a medium-severity vulnerability in Novel Boutique House-plus Project Novel Boutique House-plus with a CVSS 3.x base score of 5.3. 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: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Novel Boutique House-plus Project Novel Boutique House-plus
Published: 2021-04-29
Last modified: 2026-06-17

Description

Directory Traversal in the fileDownload function in com/java2nb/common/controller/FileController.java in Novel-plus (小说精品屋-plus) 3.5.1 allows attackers to read arbitrary files via the filePath parameter.

Frequently asked questions

What is CVE-2021-30048?: Directory Traversal in the fileDownload function in com/java2nb/common/controller/FileController.java in Novel-plus (小说精品屋-plus) 3.5.1 allows attackers to read arbitrary files via the filePath parameter.
How severe is CVE-2021-30048?: CVE-2021-30048 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-30048 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30048?: CVE-2021-30048 affects Novel Boutique House-plus Project Novel Boutique House-plus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30048?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-30048 published?: CVE-2021-30048 was published on 2021-04-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:novel_boutique_house-plus_project:novel_boutique_house-plus:3.5.1:*:*:*:*:*:*:*

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