CVE-2026-90860

Session Hijack via Unrestricted Headers in Canva Mobile WebView

Published Sep 21, 2026 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Description
The Canva Mobile App for HarmonyOS before v1.15.1 did not restrict the headers returned to an external origin running in a privileged WebView. A threat actor with control of the WebView could access a user’s session.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Session Hijack via Unrestricted Headers in Canva Mobile WebView
Type Values Removed Values Added
Description The Canva Mobile App for HarmonyOS before v1.15.1 did not restrict the headers returned to an external origin running in a privileged WebView. A threat actor with control of the WebView could access a user’s session.
First Time appeared Canva
Canva canva
Weaknesses CWE-212
CPEs cpe:2.3:a:canva:canva:*:*:harmonyos:*:*:*:*:*
Vendors & Products Canva
Canva canva
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Canva
Published
Updated
Sep 21, 2026, 7:40 PM
Reserved
Sep 14, 2026, 6:04 AM
Status
Awaiting Analysis
Published
Sep 21, 2026, 7:16 AM
Modified
Sep 21, 2026, 8:17 PM