CVE-2026-39843

HIGH

7.7

Description

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.

CVE Details

CVSS v3.1 Score7.7

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published4/9/2026

Last Modified4/17/2026

Sourcenvd

Honeypot Sightings0

Affected Products

plane:plane

Weaknesses (CWE)

CWE-918

References

https://github.com/makeplane/plane/security/advisories/GHSA-9fr2-pprw-pp9j(security-advisories@github.com)

IOC Correlations

No correlations recorded

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