CVE-2026-90860Network attack vector

Session exposure via unrestricted WebView response headers

Published Sep 21, 2026 · Updated Sep 21, 2026

Sensitive information exposure in the Canva Mobile App for HarmonyOS before 1.15.1 allows remote attackers to access a user's session. The app returns session-bearing headers to an external origin inside a privileged WebView without restricting which headers cross that trust boundary. Exploitation requires control of the privileged WebView and user interaction, and exposes the victim's active session to that external origin.

CVSS severity7.1
High
EPSS probability0.30%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive information exposure in the Canva Mobile App for HarmonyOS before 1.15.1 allows remote attackers to access a user's session. The app returns session-bearing headers to an external origin inside a privileged WebView without restricting which headers cross that trust boundary. Exploitation requires control of the privileged WebView and user interaction, and exposes the victim's active session to that external origin.

The record

CVE
CVE-2026-90860
Published
Sep 21, 2026
Updated
Sep 21, 2026
Vendor
Pexels
Product
Canva
Classifications
CWE-212, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.15.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pexels · Canvaversion=0 <1.15.1

Published CVSS scores

7.1Canva CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-212Improper Removal of Sensitive Information Before Storage or Transfer
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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Technologies

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