How severe is CVE-2017-18038?

CVE-2017-18038 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-2017-18038 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18038?

CVE-2017-18038 affects Atlassian Bitbucket. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-18038?

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

When was CVE-2017-18038 published?

CVE-2017-18038 was published on 2018-02-02 and last updated on 2026-06-17.

CVE-2017-18038

CVE-2017-18038 is a medium-severity vulnerability in Atlassian Bitbucket 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: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Atlassian Bitbucket
Published: 2018-02-02
Last modified: 2026-06-17

Description

The repository settings resource in Atlassian Bitbucket Server before version 5.6.0 allows remote attackers to read the first line of arbitrary files via a path traversal vulnerability through the default branch name.

Frequently asked questions

What is CVE-2017-18038?: The repository settings resource in Atlassian Bitbucket Server before version 5.6.0 allows remote attackers to read the first line of arbitrary files via a path traversal vulnerability through the default branch name.
How severe is CVE-2017-18038?: CVE-2017-18038 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-2017-18038 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18038?: CVE-2017-18038 affects Atlassian Bitbucket. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-18038?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-18038 published?: CVE-2017-18038 was published on 2018-02-02 and last updated on 2026-06-17.

References

https://jira.atlassian.com/browse/BSERV-10592

Affected products (1)

cpe:2.3:a:atlassian:bitbucket:*:*:*:*:*:*:*:*

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