CVE-2026-10850
Plane 1.3.1 - Stored XSS in intake issue description_html
Description
Plane CE 1.3.1 allows a low-privileged project member to submit arbitrary HTML/JS in the description_html field when creating an intake work item through the API v1 intake endpoint.
INFO
Published Date :
June 17, 2026, 3:16 p.m.
Last Modified :
June 23, 2026, 2:47 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 84fe0718-d6bb-4716-a7e8-81a6d1daa869 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Sanitize all HTML input in the description_html field.
- Validate and encode user-supplied data before display.
- Apply security best practices for handling HTML input.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-10850.
| URL | Resource |
|---|---|
| https://fluidattacks.com/es/advisories/earth | Exploit Third Party Advisory |
| https://github.com/makeplane/plane | Product |
| https://fluidattacks.com/es/advisories/earth | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-10850 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-10850
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-10850 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-10850 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 23, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:plane:plane:1.3.1:*:*:*:*:*:*:* Added Reference Type Fluid Attacks: https://fluidattacks.com/es/advisories/earth Types: Exploit, Third Party Advisory Added Reference Type Fluid Attacks: https://github.com/makeplane/plane Types: Product Added Reference Type CISA-ADP: https://fluidattacks.com/es/advisories/earth Types: Exploit, Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added Reference https://fluidattacks.com/es/advisories/earth Added SSVC {'id': 'CVE-2026-10850', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-17T15:39:36.404624Z'} -
New CVE Received by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Plane', 'product': 'Plane', 'versions': [{'status': 'affected', 'version': '1.3.1'}], 'platforms': ['Windows', 'MacOS', 'Linux'], 'defaultStatus': 'unaffected'}] Added Description Plane CE 1.3.1 allows a low-privileged project member to submit arbitrary HTML/JS in the description_html field when creating an intake work item through the API v1 intake endpoint. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:L/SI:L/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 Added CWE CWE-79 Added Reference https://fluidattacks.com/es/advisories/earth Added Reference https://github.com/makeplane/plane