Unauthenticated SSRF via diagnostic host parameters
Published Oct 3, 2025 · Updated Oct 3, 2025
SSRF in OpenSupports 4.11.0 allows remote attackers to scan internal services through unauthenticated diagnostic endpoints. The test-imap handler passes the supplied imap-host to imap_open, while test-smtp assigns smtp-host as connection settings; both declare permission as any. Unauthenticated network access is sufficient, and response timing and errors disclose which server-reachable TCP ports accept connections.
Summary
What happened
SSRF in OpenSupports 4.11.0 allows remote attackers to scan internal services through unauthenticated diagnostic endpoints. The test-imap handler passes the supplied imap-host to imap_open, while test-smtp assigns smtp-host as connection settings; both declare permission as any. Unauthenticated network access is sufficient, and response timing and errors disclose which server-reachable TCP ports accept connections.
The record
- CVE
- CVE-2025-10695
- Published
- Oct 3, 2025
- Updated
- Oct 3, 2025
- Vendor
- OpenSupports
- Product
- OpenSupports
- Classifications
- CWE-918, CAPEC-664, T1046
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 3, 2025CVE publishedPublication date reported by the CVE source.
- Oct 3, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=4.11.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
- Fluid Attacks test-imap and test-smtp SSRF proof of conceptfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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