How severe is CVE-2017-18086?

CVE-2017-18086 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-2017-18086 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18086?

CVE-2017-18086 affects Atlassian Confluence. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-18086?

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

When was CVE-2017-18086 published?

CVE-2017-18086 was published on 2018-02-02 and last updated on 2026-06-17.

CVE-2017-18086

CVE-2017-18086 is a medium-severity vulnerability in Atlassian Confluence 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% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Atlassian Confluence
Published: 2018-02-02
Last modified: 2026-06-17

Description

Various resources in Atlassian Confluence Server before version 6.4.2 allow remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the issuesURL parameter.

Frequently asked questions

What is CVE-2017-18086?: Various resources in Atlassian Confluence Server before version 6.4.2 allow remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the issuesURL parameter.
How severe is CVE-2017-18086?: CVE-2017-18086 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-2017-18086 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18086?: CVE-2017-18086 affects Atlassian Confluence. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-18086?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-18086 published?: CVE-2017-18086 was published on 2018-02-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:atlassian:confluence:*:*:*:*:*:*:*:*

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