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Password Manager EUVD-2026-37679

| CVE-2026-10837 MEDIUM
URL Redirection to Untrusted Site (Open Redirect) (CWE-601)
2026-06-17 INCIBE
5.1
CVSS 4.0 · Vendor: INCIBE
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Severity by source

Vendor (INCIBE) PRIMARY
5.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
vuln.today AI
6.1 MEDIUM

Network-accessible, no auth required, but user must click a crafted link (UI:R); scope change (S:C) applies as the victim is redirected to an attacker-controlled system.

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (INCIBE).

CVSS VectorVendor: INCIBE

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
A

Lifecycle Timeline

1
Analysis Generated
Jun 17, 2026 - 13:16 vuln.today

DescriptionCVE.org

Open redirection vulnerability due to insufficient validation of the X-Forwarded-Host HTTP header. An attacker could create manipulated links that, when opened by a victim, cause the victim to be redirected to domains controlled by the attacker, enabling phishing or deception attacks with limited impact on confidentiality and integrity.

AnalysisAI

Open redirection in Password Manager exposes users to phishing attacks by failing to validate the X-Forwarded-Host HTTP header before using it to construct redirect URLs. Unauthenticated remote attackers can craft malicious links that, when clicked by a victim, silently redirect them to an attacker-controlled domain - a particularly dangerous vector given that the target application manages credentials. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft URL with forged X-Forwarded-Host header
Delivery
Deliver malicious link to victim via phishing
Exploit
Victim clicks link opening Password Manager endpoint
Execution
Application reflects unvalidated header into redirect response
Persist
Victim silently redirected to attacker-controlled domain
Impact
Attacker captures credentials via phishing page

Vulnerability AssessmentAI

Exploitation Exploitation requires the victim to click a crafted link (CVSS UI:A - active user interaction is mandatory and is the primary limiting factor). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 5.1 (Medium) reflects a network-reachable, low-complexity, unauthenticated attack path (AV:N/AC:L/AT:N/PR:N) gated on user interaction (UI:A). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker composes a phishing email or message containing a legitimate-looking link to the target Password Manager instance, but with a forged X-Forwarded-Host header value embedded or triggered via a crafted intermediary request pointing to an attacker-controlled domain. When the victim clicks the link and the application processes the forged header to construct a redirect, the victim is silently sent to a convincing replica of the password manager login page hosted by the attacker, where they may enter their master password or MFA token. …
Remediation Apply the vendor-released patch referenced in the INCIBE advisory at https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-password-manager. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-37679 vulnerability details – vuln.today

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