How severe is CVE-2017-17716?

CVE-2017-17716 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-17716 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-17716?

CVE-2017-17716 primarily affects Gitlab. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-17716?

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

When was CVE-2017-17716 published?

CVE-2017-17716 was published on 2017-12-17 and last updated on 2026-06-17.

CVE-2017-17716

CVE-2017-17716 is a medium-severity vulnerability in Gitlab with a CVSS 3.x base score of 5.9. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Gitlab
Published: 2017-12-17
Last modified: 2026-06-17

Description

GitLab 9.4.x before 9.4.2 does not support LDAP SSL certificate verification, but a verify_certificates LDAP option was mentioned in the 9.4 release announcement. This issue occurred because code was not merged. This is related to use of the omniauth-ldap library and the gitlab_omniauth-ldap gem.

Frequently asked questions

What is CVE-2017-17716?: GitLab 9.4.x before 9.4.2 does not support LDAP SSL certificate verification, but a verify_certificates LDAP option was mentioned in the 9.4 release announcement. This issue occurred because code was not merged. This is related to use of the omniauth-ldap library and the gitlab_omniauth-ldap gem.
How severe is CVE-2017-17716?: CVE-2017-17716 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-17716 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-17716?: CVE-2017-17716 primarily affects Gitlab. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-17716?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-17716 published?: CVE-2017-17716 was published on 2017-12-17 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:a:gitlab:gitlab:9.4.0:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:9.4.0:rc1:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:9.4.0:rc2:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:9.4.0:rc3:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:9.4.0:rc4:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:9.4.0:rc5:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:9.4.0:rc6:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:9.4.1:*:*:*:*:*:*:*

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