Quick answers
- Is CVE-2026-90860 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-90860 being exploited in the wild.
- How severe is CVE-2026-90860?
- High severity, with a CVSS score of 7.1, published 21 September 2026.
- Which products and versions are affected?
- Canva Mobile App for HarmonyOS before 1.15.1.
- Is there a fix for CVE-2026-90860?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-90860 attacked?
- It is attacked from the adjacent network or with local access, in a web application.
- Am I affected by CVE-2026-90860?
- Check whether you run Canva Mobile App for HarmonyOS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A header restriction bypass vulnerability in the Canva HarmonyOS app's WebView allows an attacker controlling the WebView to read sensitive response headers—including session tokens—from cross-origin requests. The vulnerability requires the attacker to control the WebView context, a precondition that could be met through other compromises. No authentication bypass is required once this control is established; the impact is full session compromise.
Affected products
- Canva Mobile App for HarmonyOS before 1.15.1
Timeline
- 2026-09-21: disclosed