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TI-2026-09315 Aliases CVE-2026-10850GHSA-4fp8-7gvj-j2xg

Plane 1.3.1 - Stored XSS in intake issue description_html

Priority MEDIUM 64CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00165 5th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
makeplanePlane1.3.1—No fix listedCNA
  • Plane Vendormakeplane Affected 1.3.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:plane:plane:1.3.1:*:*:*:*:*:*:*1.3.1Vulnerablemakeplane
  • cpe:2.3:a:plane:plane:1.3.1:*:*:*:*:*:*:* Versions 1.3.1 Vulnerable ·makeplane

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-10850
  2. 2026-10-03 Alias added: GHSA-4fp8-7gvj-j2xg

References

Exploit 1

Other 1

  • TI-2024-32097 Plane allows server side request forgery via /_next/image endpoint CVSS 3.1CRITICAL 9.3
  • TI-2026-34237 Authorization bypass in makeplane plane CVSS 3.1HIGH 8.3
  • TI-2023-02127 Plane v0.7.1 - Unauthorized access to files CVSS 3.1HIGH 7.5
  • TI-2026-28725 Plane has a Server-Side Request Forgery (SSRF) in Favicon Fetching CVSS 3.1HIGH 7.7
  • TI-2026-28361 Plane IDOR: Cross-Project Issue Date Modification via Bulk Update Endpoint CVSS 3.1HIGH 7.7
  • TI-2023-14603 Plane 0.7.1 - Insecure file upload CVSS 3.1HIGH 7.1
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences