CVE-2026-24117
MEDIUM
GHSA-4c4x-jm2x-pf9j
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
3Description
Rekor is a software supply chain transparency log. In versions 1.4.3 and below, attackers can trigger SSRF to arbitrary internal services because /api/v1/index/retrieve supports retrieving a public key via user-provided URL. Since the SSRF only can trigger GET requests, the request cannot mutate state. The response from the GET request is not returned to the caller so data exfiltration is not possible. A malicious actor could attempt to probe an internal network through Blind SSRF. The issue has been fixed in version 1.5.0. To workaround this issue, disable the search endpoint with --enable_retrieve_api=false.
Analysis
Rekor versions 1.4.3 and earlier contain a server-side request forgery (SSRF) vulnerability in the /api/v1/index/retrieve endpoint that allows unauthenticated remote attackers to probe internal networks through blind SSRF attacks by supplying arbitrary URLs for public key retrieval. While the vulnerability cannot directly exfiltrate data or modify state since responses are not returned and only GET requests are supported, it enables reconnaissance of internal infrastructure. …
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Remediation
Within 30 days: Identify affected systems running transparency log. In and apply vendor patches as part of regular patch cycle. …
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External POC / Exploit Code
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