{"id":"CVE-2026-39843","summary":"Plane has a Server-Side Request Forgery (SSRF) in Favicon Fetching","details":"Plane is an an open-source project management tool. From 0.28.0 to before 1.3.0, the remediation of GHSA-jcc6-f9v6-f7jw is incomplete which could lead to the same full read Server-Side Request Forgery when a normal html page contains a link tag with an href that redirects to a private IP address is supplied to Add link by an authenticated attacker with low privileges. Redirects for the main page URL are validated, but not the favicon fetch path. fetch_and_encode_favicon() still uses requests.get(favicon_url, ...) with the default redirect-following. This vulnerability is fixed in 1.3.0.","aliases":["GHSA-9fr2-pprw-pp9j"],"modified":"2026-07-08T08:13:03.359524454Z","published":"2026-04-09T15:43:34.963Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39843.json","cwe_ids":["CWE-918"],"cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39843.json"},{"type":"ADVISORY","url":"https://github.com/makeplane/plane/security/advisories/GHSA-9fr2-pprw-pp9j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39843"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/makeplane/plane","events":[{"introduced":"c4d2c5b1bb5225d0caab9b33dd4b11abe00f1869"},{"fixed":"cf696d200d3e222390a01ba20e833eb11a5ed881"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:plane:plane:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0.28.0"},{"fixed":"1.3.0"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39843.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"}]}