CVE-2026-56657

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{"bugzilla": {"description": "code.gitea.io/gitea: Gitea: Denial of Service in SSH Key Parser", "id": "2515479", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2515479"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["A flaw was found in Gitea. The SSH Key Parser component is vulnerable to a denial of service. A remote attacker could potentially exploit this by submitting a specially crafted SSH key, leading to the unavailability of the Gitea service."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-56657", "package_state": [{"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines-client", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-cli-tkn-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-opc-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-pipelines-as-code-cli-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-pipelines-as-code-controller-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-pipelines-as-code-watcher-rhel9", "product_name": "OpenShift Pipelines"}], "public_date": "2026-08-13T16:44:43Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-56657\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-56657\nhttps://blog.gitea.com/gitea-1.27.0-is-released/\nhttps://github.com/go-gitea/gitea/releases/tag/v1.27.0\nhttps://github.com/go-gitea/gitea/security/advisories/GHSA-4xjf-493q-98p3"], "statement": "This is a Moderate impact denial of Service vulnerability in the Gitea SSH key parser. Red Hat products are not affected as they do not expose any endpoint that ingest SSH key using Gitea. Products that import from code.gitea.io/gitea only compile the modules/structs and modules/json subpackages.", "threat_severity": "Moderate"}

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