Unauthenticated SSRF via unpinned DNS resolution
Published Apr 21, 2026 · Updated Apr 21, 2026
SSRF in AVideo's LiveLinks proxy before 26.0 allows remote attackers to send requests to internal services through DNS rebinding. The endpoint validates a hostname with isSSRFSafeURL(), then get_headers() or fakeBrowser() resolves it again without pinning the approved IP. Unauthenticated network access to the proxy endpoint is sufficient to probe protected services or cloud metadata endpoints through the server.
Summary
What happened
SSRF in AVideo's LiveLinks proxy before 26.0 allows remote attackers to send requests to internal services through DNS rebinding. The endpoint validates a hostname with isSSRFSafeURL(), then get_headers() or fakeBrowser() resolves it again without pinning the approved IP. Unauthenticated network access to the proxy endpoint is sufficient to probe protected services or cloud metadata endpoints through the server.
The record
- CVE
- CVE-2026-41055
- Published
- Apr 21, 2026
- Updated
- Apr 21, 2026
- Vendor
- World Wide Broadcast Network
- Product
- AVideo
- Classifications
- CWE-918, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 21, 2026CVE publishedPublication date reported by the CVE source.
- Apr 21, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 26.0
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
- LiveLinks DNS-rebinding proof of conceptproof of concept · 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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