How severe is CVE-2018-15559?

CVE-2018-15559 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-15559 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-15559?

CVE-2018-15559 affects Xiuno Xiunobbs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-15559?

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

When was CVE-2018-15559 published?

CVE-2018-15559 was published on 2018-08-20 and last updated on 2026-06-17.

CVE-2018-15559

CVE-2018-15559 is a medium-severity vulnerability in Xiuno Xiunobbs with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Xiuno Xiunobbs
Published: 2018-08-20
Last modified: 2026-06-17

Description

The editor in Xiuno BBS 4.0.4 allows stored XSS.

Frequently asked questions

What is CVE-2018-15559?: The editor in Xiuno BBS 4.0.4 allows stored XSS.
How severe is CVE-2018-15559?: CVE-2018-15559 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-15559 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-15559?: CVE-2018-15559 affects Xiuno Xiunobbs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-15559?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-15559 published?: CVE-2018-15559 was published on 2018-08-20 and last updated on 2026-06-17.

References

https://bbs.xiuno.com/thread-148095.htm

Affected products (1)

cpe:2.3:a:xiuno:xiunobbs:4.0.4:*:*:*:*:*:*:*

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