How severe is CVE-2026-20736?

CVE-2026-20736 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-20736 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-20736?

CVE-2026-20736 affects Gitea. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-20736?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-20736 have an EU (EUVD) identifier?

Yes. CVE-2026-20736 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4269.

When was CVE-2026-20736 published?

CVE-2026-20736 was published on 2026-01-22 and last updated on 2026-06-30.

CVE-2026-20736

CVE-2026-20736 is a high-severity vulnerability in Gitea with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4269
Weakness: CWE-284
Affected product: Gitea
Published: 2026-01-22
Last modified: 2026-06-30

Description

Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access.

Frequently asked questions

What is CVE-2026-20736?: Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access.
How severe is CVE-2026-20736?: CVE-2026-20736 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-20736 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-20736?: CVE-2026-20736 affects Gitea. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-20736?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-20736 have an EU (EUVD) identifier?: Yes. CVE-2026-20736 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4269.
When was CVE-2026-20736 published?: CVE-2026-20736 was published on 2026-01-22 and last updated on 2026-06-30.

References

Affected products (1)

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

More vulnerabilities in Gitea

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CVE-2021-45330 — Critical (CVSS 9.8): An issue exsits in Gitea through 1.15.7, which could let a malicious user gain privileges due to client side cookies…
CVE-2021-45327 — Critical (CVSS 9.8): Gitea before 1.11.2 is affected by Trusting HTTP Permission Methods on the Server Side when referencing the vulnerable…
CVE-2020-28991 — Critical (CVSS 9.8): Gitea 0.9.99 through 1.12.x before 1.12.6 does not prevent a git protocol path that specifies a TCP port number and…
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