Type Vulnerability
Origin validation error in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorised attacker to disclose information over a network.
Microsoft
Microsoft Authentication Library (MSAL) for Node.js Information Disclosure Vulnerability
CVE-2026-109461
What this means
This is rated medium severity (5.9 out of 10). There is no confirmed exploitation of it yet.
Full vendor description
Origin validation error in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to disclose information over a network.
Scoring and exploitation
5.9/ 10
CVSS 3.1 base scoreMedium
Exploitable over the network without any account, under specific conditions, and no one has to click or open anything. High impact on confidentiality.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityHighAC:H
Privileges requiredNonePR:N
User interactionNoneUI:N
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityHighC:H
IntegrityNoneI:N
AvailabilityNoneA:N
- ~0.4% estimated chance of attack in 30 daysModel estimate (): a probability signal, not confirmed exploitation
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-346
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link