{"id":"CVE-2023-39966","aliases":["EUVD-2023-2301","GHSA-hf7j-xj3w-87g4","GO-2023-2006"],"status":"published","title":"1Panel arbitrary file write vulnerability exists in the background","description":"1Panel is an open source Linux server operation and maintenance management panel. In version 1.4.3, an arbitrary file write vulnerability could lead to direct control of the server. In the `api/v1/file.go` file, there is a function called `SaveContentthat,It `recieves JSON data sent by users in the form of a POST request. And the lack of parameter filtering allows for arbitrary file write operations. Version 1.5.0 contains a patch for this issue.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00834,"percentile":0.58144,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-862"],"published":"2023-08-10T17:46:21Z","modified":"2026-10-28T02:30:38Z","fixes":[{"ecosystem":"Go","package":"github.com/1Panel-dev/1Panel","fixed_in":["1.5.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/1Panel-dev/1Panel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.4.3"},{"last_affected":"1.4.3"},{"fixed":"1.5.0"}]}],"versions":["1.4.3"]},{"source":"osv","ecosystem":"Go","package":"github.com/1Panel-dev/1Panel","ranges":[{"type":"SEMVER","events":[{"introduced":"1.4.3"},{"fixed":"1.5.0"}]}],"versions":["1.4.3"]},{"source":"osv","ecosystem":"Go","package":"github.com/1Panel-dev/1Panel","ranges":[{"type":"SEMVER","events":[{"introduced":"1.4.3"},{"fixed":"1.5.0"}]}]}],"products":[{"vendor":"1panel-dev","product":"1panel"},{"vendor":"fit2cloud","product":"1panel"}],"references":[{"url":"https://github.com/1Panel-dev/1Panel/security/advisories/GHSA-hf7j-xj3w-87g4","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Vendor Advisory","advisory","web"]},{"url":"https://github.com/1Panel-dev/1Panel/releases/tag/v1.5.0","tags":["x_refsource_MISC","x_transferred","Product","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-39966","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hf7j-xj3w-87g4"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39966.json","tags":["advisory"]},{"url":"https://github.com/1Panel-dev/1Panel","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-39966","title":"1Panel arbitrary file write vulnerability exists in the background","description":"1Panel is an open source Linux server operation and maintenance management panel. In version 1.4.3, an arbitrary file write vulnerability could lead to direct control of the server. In the `api/v1/file.go` file, there is a function called `SaveContentthat,It `recieves JSON data sent by users in the form of a POST request. And the lack of parameter filtering allows for arbitrary file write operations. Version 1.5.0 contains a patch for this issue.","status":"published","published":"2023-08-10T17:46:21.104Z","modified":"2024-10-04T18:56:18.054Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:35:33.138994Z"}],"euvd":[{"id":"EUVD-2023-2301","description":"1Panel is an open source Linux server operation and maintenance management panel. In version 1.4.3, an arbitrary file write vulnerability could lead to direct control of the server. In the `api/v1/file.go` file, there is a function called `SaveContentthat,It `recieves JSON data sent by users in the form of a POST request. And the lack of parameter filtering allows for arbitrary file write operations. Version 1.5.0 contains a patch for this issue.","status":"published","published":"2023-08-10T17:46:21Z","modified":"2024-10-04T18:56:18Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T00:27:50.41571Z"}],"ghsa":[{"id":"GHSA-hf7j-xj3w-87g4","title":"1Panel arbitrary file write vulnerability","description":"# Summary\nAn arbitrary file write vulnerability could lead to direct control of the server\n# Details\n## Arbitrary file creation\nIn the api/v1/file.go file, there is a function called SaveContentthat,It recieves JSON data sent by users in the form of a POST request. And the lack of parameter filtering allows for arbitrary file write operations.It looks like this:\n\n- Vulnerable Code\n\n![微信图片_20230801092544](https://user-images.githubusercontent.com/136411443/257381095-4d7c014b-b699-4152-8b9d-2cc9399dfd85.png)\n\n# PoC\n\n- We can write the SSH public key into the /etc/.root/authorized_keys configuration file on the server.\n\n![微信图片_20230801093243](https://user-images.githubusercontent.com/136411443/257381907-38784fab-77b9-47b9-a598-44ef7ad0b65c.png)\n\n- The server was successfully written to the public key\n![微信图片_20230801093610](https://user-images.githubusercontent.com/136411443/257382468-b4836eee-f751-4b43-93ff-cb39fdc6c809.png)\n\n- Successfully connected to the target server using an SSH private key.\n![微信图片_20230801093933](https://user-images.githubusercontent.com/136411443/257383031-53f1e5de-2743-48ed-a1cf-9a5ea0c0f90b.png)\n![微信图片_20230801094037](https://user-images.githubusercontent.com/136411443/257383041-d9f64647-95d9-4711-8b9f-e152966537c9.png)\n\nAs a result, the server is directly controlled, causing serious **harm**\n\n\n# Impact\n1Panel v1.4.3\n","status":"published","published":"2023-08-10T20:09:47Z","modified":"2023-11-12T05:02:10Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:37:21.209096Z"}],"nvd":[{"id":"CVE-2023-39966","description":"1Panel is an open source Linux server operation and maintenance management panel. In version 1.4.3, an arbitrary file write vulnerability could lead to direct control of the server. In the `api/v1/file.go` file, there is a function called `SaveContentthat,It `recieves JSON data sent by users in the form of a POST request. And the lack of parameter filtering allows for arbitrary file write operations. Version 1.5.0 contains a patch for this issue.","status":"published","published":"2023-08-10T18:15:11.55Z","modified":"2026-06-17T06:13:02.973Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:08:22.812138Z"}],"osv":[{"id":"CVE-2023-39966","title":"1Panel arbitrary file write vulnerability exists in the background","description":"1Panel is an open source Linux server operation and maintenance management panel. In version 1.4.3, an arbitrary file write vulnerability could lead to direct control of the server. In the `api/v1/file.go` file, there is a function called `SaveContentthat,It `recieves JSON data sent by users in the form of a POST request. And the lack of parameter filtering allows for arbitrary file write operations. Version 1.5.0 contains a patch for this issue.","status":"published","published":"2023-08-10T17:46:21.104Z","modified":"2026-10-28T02:30:38.213690343Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:44:33.244128Z"},{"id":"GHSA-hf7j-xj3w-87g4","title":"1Panel arbitrary file write vulnerability","description":"# Summary\nAn arbitrary file write vulnerability could lead to direct control of the server\n# Details\n## Arbitrary file creation\nIn the api/v1/file.go file, there is a function called SaveContentthat,It recieves JSON data sent by users in the form of a POST request. And the lack of parameter filtering allows for arbitrary file write operations.It looks like this:\n\n- Vulnerable Code\n\n![微信图片_20230801092544](https://user-images.githubusercontent.com/136411443/257381095-4d7c014b-b699-4152-8b9d-2cc9399dfd85.png)\n\n# PoC\n\n- We can write the SSH public key into the /etc/.root/authorized_keys configuration file on the server.\n\n![微信图片_20230801093243](https://user-images.githubusercontent.com/136411443/257381907-38784fab-77b9-47b9-a598-44ef7ad0b65c.png)\n\n- The server was successfully written to the public key\n![微信图片_20230801093610](https://user-images.githubusercontent.com/136411443/257382468-b4836eee-f751-4b43-93ff-cb39fdc6c809.png)\n\n- Successfully connected to the target server using an SSH private key.\n![微信图片_20230801093933](https://user-images.githubusercontent.com/136411443/257383031-53f1e5de-2743-48ed-a1cf-9a5ea0c0f90b.png)\n![微信图片_20230801094037](https://user-images.githubusercontent.com/136411443/257383041-d9f64647-95d9-4711-8b9f-e152966537c9.png)\n\nAs a result, the server is directly controlled, causing serious **harm**\n\n\n# Impact\n1Panel v1.4.3\n","status":"published","published":"2023-08-10T20:09:47Z","modified":"2024-08-21T14:41:55.431289Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:46:48.920784Z"},{"id":"GO-2023-2006","title":"1Panel arbitrary file write vulnerability in github.com/1Panel-dev/1Panel","description":"1Panel arbitrary file write vulnerability in github.com/1Panel-dev/1Panel","status":"published","published":"2024-08-21T14:17:52Z","modified":"2026-03-03T04:54:07.131705Z","updated_at":"2026-11-02T15:47:01.185262Z"}]}}