How severe is CVE-2026-20904?

CVE-2026-20904 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 high, and availability none.

Is CVE-2026-20904 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-20904?

CVE-2026-20904 affects Gitea. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-20904?

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

Does CVE-2026-20904 have an EU (EUVD) identifier?

Yes. CVE-2026-20904 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4262.

When was CVE-2026-20904 published?

CVE-2026-20904 was published on 2026-01-22 and last updated on 2026-06-17.

CVE-2026-20904

CVE-2026-20904 is a medium-severity vulnerability in Gitea 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4262
Weakness: CWE-284
Affected product: Gitea
Published: 2026-01-22
Last modified: 2026-06-17

Description

Gitea does not properly validate ownership when toggling OpenID URI visibility. An authenticated user may be able to change the visibility settings of other users' OpenID identities.

Frequently asked questions

What is CVE-2026-20904?: Gitea does not properly validate ownership when toggling OpenID URI visibility. An authenticated user may be able to change the visibility settings of other users' OpenID identities.
How severe is CVE-2026-20904?: CVE-2026-20904 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 high, and availability none.
Is CVE-2026-20904 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-20904?: CVE-2026-20904 affects Gitea. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-20904?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-20904 have an EU (EUVD) identifier?: Yes. CVE-2026-20904 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4262.
When was CVE-2026-20904 published?: CVE-2026-20904 was published on 2026-01-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gitea:gitea:*:*:*:*:*:-:*:*

More vulnerabilities in Gitea

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