Quick answers
- Is CVE-2026-49159 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-49159 being exploited in the wild.
- How severe is CVE-2026-49159?
- Medium severity, with a CVSS score of 6.5, published 24 July 2026.
- Which products and versions are affected?
- Microsoft Graph All versions.
- Is there a fix for CVE-2026-49159?
- 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-2026-49159 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-49159?
- Check whether you run Microsoft Graph 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
An information disclosure vulnerability exists in Microsoft Graph, classified as CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor). The flaw allows an attacker with low-level 'Authorized' privileges to disclose sensitive information over a network. According to the CVSS vector, the attack is low complexity, requires no user interaction, and has a high impact on confidentiality. As Microsoft Graph is an exclusively hosted service, the fix is typically managed by the provider on the backend.
Affected products
- Microsoft Microsoft Graph All versions
Timeline
- 2026-07-24: advisory: Initial disclosure by Microsoft and NVD