CVE-2026-104979

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Source
https://cve.org/CVERecord?id=CVE-2026-104979
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104979.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-104979
Aliases
  • GHSA-hh2r-3hwp-mvq3
Published
2026-10-05T17:49:53Z
Modified
2026-10-28T02:30:44Z
Severity
  • 8.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N CVSS Calculator
Summary
Plane: Cross-tenant stored XSS in intake enables account takeover
Details

Plane is an open-source project management tool. Prior to 1.4.0, IntakeIssuePublicViewSet.create in Plane v1.3.1 writes description_html through Issue.objects.create(...) without calling validate_html_content from nh3. Any authenticated user, including a new user with no workspace memberships, can plant arbitrary HTML in a project that has a published DeployBoard with intake enabled. When a project member or viewer of a closed intake item clicks the planted link, the TipTap \tjavascript: parser bypass and the target="_self" click handler execute JavaScript in the viewer's session and exfiltrate a long-lived API token. This issue is fixed in 1.4.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-79",
        "CWE-862"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104979.json"
}
References

Affected packages

Git / github.com/makeplane/plane

Affected ranges

Type
GIT
Repo
https://github.com/makeplane/plane
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
917b23a6c16d93fc00cef67900eff2755e8b13f7
Fixed
0d58adb69d859fc94c43b9d68fadd77e810d5ed1
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.4.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "0d58adb69d859fc94c43b9d68fadd77e810d5ed1"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v1.4.0",
            "range":  [
                {
                    "fixed":  "917b23a6c16d93fc00cef67900eff2755e8b13f7"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v0.*
v0.1-dev
v0.10-dev
v0.11-dev
v0.12-dev
v0.12.1-dev
v0.12.2-dev
v0.13-dev
v0.13.1-dev
v0.13.2-dev
v0.14-dev
v0.14.1-dev
v0.14.2-dev
v0.15-dev
v0.15.1-dev
v0.15.2-dev
v0.15.3-hotfix
v0.15.4-dev
v0.16-dev
v0.17-dev
v0.18-dev
v0.19-dev
v0.20-dev
v0.21-dev
v0.22-dev
v0.23.0
v0.23.1
v0.24.0
v0.25.0
v0.25.1
v0.25.2
v0.25.3
v0.26.0
v0.26.1
v0.27.0
v0.27.1
v0.28.0
v0.3.1-dev
v0.4-dev
v0.5-dev
v0.6-dev
v0.7-dev
v0.7.1-dev
v0.8-dev
v0.9-dev
v1.*
v1.0.0
v1.1.0
v1.2.0
v1.2.1
v1.2.2
v1.2.3
v1.3.0
v1.3.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104979.json"