How severe is CVE-2026-27771?

CVE-2026-27771 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-27771 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 41% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-27771?

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.

When was CVE-2026-27771 published?

CVE-2026-27771 was published on 2026-07-03 and last updated on 2026-07-07.

CVE-2026-27771

CVE-2026-27771 is a high-severity vulnerability with a CVSS 3.x base score of 8.2. Its EPSS exploit-prediction score of 41% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-862.

Key facts

Severity: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 41% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Published: 2026-07-03
Last modified: 2026-07-07

Description

Gitea versions up to and including 1.26.1 have insufficient permission checks for Composer package source links, which can expose private or internal package source information.

Frequently asked questions

What is CVE-2026-27771?: Gitea versions up to and including 1.26.1 have insufficient permission checks for Composer package source links, which can expose private or internal package source information.
How severe is CVE-2026-27771?: CVE-2026-27771 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-27771 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 41% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-27771?: 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.
When was CVE-2026-27771 published?: CVE-2026-27771 was published on 2026-07-03 and last updated on 2026-07-07.

References

Other CWE-862 (Missing Authorization) vulnerabilities

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CVE-2025-30416 — Critical (CVSS 10.0): Sensitive data disclosure and manipulation due to missing authorization. The following products are affected: Acronis…
CVE-2025-45854 — Critical (CVSS 10.0): /server/executeExec of JEHC-BPM 2.0.1 allows attackers to execute arbitrary code via execParams.

Browse all CWE-862 (Missing Authorization) vulnerabilities →