How severe is CVE-2026-1660?

CVE-2026-1660 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-1660 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1660?

CVE-2026-1660 primarily affects Gitlab. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-1660?

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

Does CVE-2026-1660 have an EU (EUVD) identifier?

Yes. CVE-2026-1660 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24959.

When was CVE-2026-1660 published?

CVE-2026-1660 was published on 2026-04-22 and last updated on 2026-06-17.

CVE-2026-1660

CVE-2026-1660 is a medium-severity vulnerability in Gitlab with a CVSS 3.x base score of 6.5. 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-770.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-24959
Weakness: CWE-770
Affected product: Gitlab
Published: 2026-04-22
Last modified: 2026-06-17

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.3 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user to cause denial of service when importing issues due to improper input validation.

Frequently asked questions

What is CVE-2026-1660?: GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.3 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user to cause denial of service when importing issues due to improper input validation.
How severe is CVE-2026-1660?: CVE-2026-1660 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-1660 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1660?: CVE-2026-1660 primarily affects Gitlab. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-1660?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-1660 have an EU (EUVD) identifier?: Yes. CVE-2026-1660 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24959.
When was CVE-2026-1660 published?: CVE-2026-1660 was published on 2026-04-22 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:community:*:*:*
cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:enterprise:*:*:*

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