---
title: "CVE-2026-104976: Plane - Server Side Request Forgery"
description: "Plane prior to 1.4.0 contains a server-side request forgery caused by insufficient validation of GITEA_HOST and avatar_url in the Gitea OAuth flow, letting authenticated Gitea users make internal network requests, exploit requires Gitea OAuth enabled and user login."
url: https://panop.io/threat-heartbeat/CVE-2026-104976/
---

# CVE-2026-104976 Plane - Server Side Request Forgery

Plane prior to 1.4.0 contains a server-side request forgery caused by insufficient validation of GITEA\_HOST and avatar\_url in the Gitea OAuth flow, letting authenticated Gitea users make internal network requests, exploit requires Gitea OAuth enabled and user login.

CVSS base score 8.7 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.25% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-104976)

## Details

Type

Server Side Request Forgery

Impact

Server Side Request Forgery

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Published

5 October 2026

Updated

15 October 2026

Weakness

[CWE-918](https://cwe.mitre.org/data/definitions/918.html)

## Vendor fix

Update to version 1.4.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-104976](https://nvd.nist.gov/vuln/detail/CVE-2026-104976)
- [https://github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615](https://github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615)
- [https://github.com/makeplane/plane/pull/9163](https://github.com/makeplane/plane/pull/9163)
- [https://github.com/makeplane/plane/releases/tag/v1.4.0](https://github.com/makeplane/plane/releases/tag/v1.4.0)
- [https://github.com/makeplane/plane/security/advisories/GHSA-hx79-5pj5-qh42](https://github.com/makeplane/plane/security/advisories/GHSA-hx79-5pj5-qh42)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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