CVE-2026-24117

Rekor affected by Server-Side Request Forgery (SSRF) via provided public key URL

Published Jan 22, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-4c4x-jm2x-pf9j Rekor affected by Server-Side Request Forgery (SSRF) via provided public key URL
History
Type Values Removed Values Added
First Time appeared Linuxfoundation
Linuxfoundation rekor
CPEs cpe:2.3:a:linuxfoundation:rekor:*:*:*:*:*:*:*:*
Vendors & Products Linuxfoundation
Linuxfoundation rekor
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Sigstore
Sigstore rekor
Vendors & Products Sigstore
Sigstore rekor
Type Values Removed Values Added
Description 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.
Title Rekor affected by Server-Side Request Forgery (SSRF) via provided public key URL
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jan 23, 2026, 8:14 PM
Reserved
Jan 21, 2026, 6:38 PM
Status
Analyzed
Published
Jan 22, 2026, 10:16 PM
Modified
Jun 17, 2026, 10:22 AM
Severity
Moderate
Public date
Jan 22, 2026, 10:05 PM