How severe is CVE-2020-12283?

CVE-2020-12283 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-2020-12283 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12283?

CVE-2020-12283 affects Sourcegraph. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-12283?

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

When was CVE-2020-12283 published?

CVE-2020-12283 was published on 2020-04-30 and last updated on 2026-06-17.

CVE-2020-12283

CVE-2020-12283 is a medium-severity vulnerability in Sourcegraph 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-601.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 5.8
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-601
Affected product: Sourcegraph
Published: 2020-04-30
Last modified: 2026-06-17

Description

Sourcegraph before 3.15.1 has a vulnerable authentication workflow because of improper validation in the SafeRedirectURL method in cmd/frontend/auth/redirect.go, such as for the //foo//example.com substring.

Frequently asked questions

What is CVE-2020-12283?: Sourcegraph before 3.15.1 has a vulnerable authentication workflow because of improper validation in the SafeRedirectURL method in cmd/frontend/auth/redirect.go, such as for the //foo//example.com substring.
How severe is CVE-2020-12283?: CVE-2020-12283 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-2020-12283 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12283?: CVE-2020-12283 affects Sourcegraph. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-12283?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12283 published?: CVE-2020-12283 was published on 2020-04-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sourcegraph:sourcegraph:*:*:*:*:*:*:*:*

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