Open redirect via unchecked redirect_to parameter
Published Feb 24, 2025 · Updated Apr 8, 2026
Open redirect in WPO365 Microsoft 365 Graph Mailer 3.2 and earlier allows remote attackers to send users to untrusted sites. The redirect handler accepts the redirect_to request parameter as a destination without validating that it belongs to the site. Exploitation requires an activated but unconfigured plugin and user action on an attacker-crafted request; the bounded impact is redirection to an untrusted site.
Summary
What happened
Open redirect in WPO365 Microsoft 365 Graph Mailer 3.2 and earlier allows remote attackers to send users to untrusted sites. The redirect handler accepts the redirect_to request parameter as a destination without validating that it belongs to the site. Exploitation requires an activated but unconfigured plugin and user action on an attacker-crafted request; the bounded impact is redirection to an untrusted site.
The record
- CVE
- CVE-2025-1488
- Published
- Feb 24, 2025
- Updated
- Apr 8, 2026
- Vendor
- WPO365
- Product
- WPO365 Microsoft 365 Graph Mailer
- Classifications
- CWE-601, T1204.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 24, 2025CVE publishedPublication date reported by the CVE source.
- Apr 8, 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?
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- Affected versionversion=0 <=3.2
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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