CVE-2026-39843

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Source
https://cve.org/CVERecord?id=CVE-2026-39843
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39843.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-39843
Aliases
  • GHSA-9fr2-pprw-pp9j
Published
2026-04-09T15:43:34Z
Modified
2026-08-12T03:51:17Z
Severity
  • 7.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39843.json"
}
References

Affected packages

Git / github.com/makeplane/plane

Affected ranges

Type
GIT
Repo
https://github.com/makeplane/plane
Events
Introduced
c4d2c5b1bb5225d0caab9b33dd4b11abe00f1869
Fixed
cf696d200d3e222390a01ba20e833eb11a5ed881
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:plane:plane:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0.28.0"
        },
        {
            "fixed": "1.3.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39843.json"