How severe is CVE-2017-8778?

CVE-2017-8778 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-2017-8778 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8778?

CVE-2017-8778 primarily affects Gitlab. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-8778?

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

When was CVE-2017-8778 published?

CVE-2017-8778 was published on 2017-05-04 and last updated on 2026-06-17.

CVE-2017-8778

CVE-2017-8778 is a medium-severity vulnerability in Gitlab 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% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Gitlab
Published: 2017-05-04
Last modified: 2026-06-17

Description

GitLab before 8.14.9, 8.15.x before 8.15.6, and 8.16.x before 8.16.5 has XSS via a SCRIPT element in an issue attachment or avatar that is an SVG document.

Frequently asked questions

What is CVE-2017-8778?: GitLab before 8.14.9, 8.15.x before 8.15.6, and 8.16.x before 8.16.5 has XSS via a SCRIPT element in an issue attachment or avatar that is an SVG document.
How severe is CVE-2017-8778?: CVE-2017-8778 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-2017-8778 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8778?: CVE-2017-8778 primarily affects Gitlab. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-8778?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-8778 published?: CVE-2017-8778 was published on 2017-05-04 and last updated on 2026-06-17.

References

Affected products (12)

cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:8.15.0:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:8.15.1:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:8.15.2:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:8.15.3:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:8.15.4:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:8.15.5:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:8.16.0:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:8.16.1:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:8.16.2:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:8.16.3:*:*:*:*:*:*:*
cpe:2.3:a:gitlab:gitlab:8.16.4:*:*:*:*:*:*:*

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