How severe is CVE-2020-10535?

CVE-2020-10535 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 none, integrity low, and availability none.

Is CVE-2020-10535 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-10535?

CVE-2020-10535 primarily affects Gitlab. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-10535?

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

When was CVE-2020-10535 published?

CVE-2020-10535 was published on 2020-03-12 and last updated on 2026-06-17.

CVE-2020-10535

CVE-2020-10535 is a medium-severity vulnerability in Gitlab 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.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 4.3
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gitlab
Published: 2020-03-12
Last modified: 2026-06-17

Description

GitLab 12.8.x before 12.8.6, when sign-up is enabled, allows remote attackers to bypass email domain restrictions within the two-day grace period for an unconfirmed email address.

Frequently asked questions

What is CVE-2020-10535?: GitLab 12.8.x before 12.8.6, when sign-up is enabled, allows remote attackers to bypass email domain restrictions within the two-day grace period for an unconfirmed email address.
How severe is CVE-2020-10535?: CVE-2020-10535 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 none, integrity low, and availability none.
Is CVE-2020-10535 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-10535?: CVE-2020-10535 primarily affects Gitlab. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-10535?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-10535 published?: CVE-2020-10535 was published on 2020-03-12 and last updated on 2026-06-17.

References

https://about.gitlab.com/releases/2020/03/11/critical-security-release-gitlab-12-dot-8-dot-6-released/

Affected products (2)

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

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