How severe is CVE-2017-18105?

CVE-2017-18105 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-18105 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-2017-18105?

CVE-2017-18105 affects Atlassian Crowd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-18105?

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-2017-18105 published?

CVE-2017-18105 was published on 2019-03-29 and last updated on 2026-06-17.

CVE-2017-18105

CVE-2017-18105 is a high-severity vulnerability in Atlassian Crowd with a CVSS 3.x base score of 8.1. 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-384.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-384
Affected product: Atlassian Crowd
Published: 2019-03-29
Last modified: 2026-06-17

Description

The console login resource in Atlassian Crowd before version 3.0.2 and from version 3.1.0 before version 3.1.1 allows remote attackers, who have previously obtained a user's JSESSIONID cookie, to gain access to some of the built-in and potentially third party rest resources via a session fixation vulnerability.

Frequently asked questions

What is CVE-2017-18105?: The console login resource in Atlassian Crowd before version 3.0.2 and from version 3.1.0 before version 3.1.1 allows remote attackers, who have previously obtained a user's JSESSIONID cookie, to gain access to some of the built-in and potentially third party rest resources via a session fixation vulnerability.
How severe is CVE-2017-18105?: CVE-2017-18105 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-18105 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-2017-18105?: CVE-2017-18105 affects Atlassian Crowd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-18105?: 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-2017-18105 published?: CVE-2017-18105 was published on 2019-03-29 and last updated on 2026-06-17.

References

https://jira.atlassian.com/browse/CWD-5072

Affected products (1)

cpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*

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