CVE-2026-110628
validatedZero produced an exploit or a check.GHSA-8p5c-vr7c-5g49 ↗EUVD-2026-101256 ↗
description
Kan 0.5.5 through 0.6.0 exposes an SSRF condition in its attachment download API. An unauthenticated remote attacker may cause the server to make requests to internal network services or cloud metadata endpoints when S3_ENDPOINT is not configured.
mitigation
Set S3_ENDPOINT to avoid the documented vulnerable configuration, and restrict unauthenticated access to the attachment download API. Apply network egress controls that block access to internal addresses and metadata services from the Kan deployment.
fixed in >= v5.5.0
outcome
Differential: the exploit fired on the vulnerable build and stayed silent on the patched one.
source signals
Public signals that triggered or updated the pipeline. These are inputs for the deltas above.
- 2026-10-14 14:17Zcve_org: trigger signal, started the run
this entry in the feed
GET /api/v1/feed/CVE-2026-110628
{ "etk_id": "ETK-2026-1582", "cve_id": "CVE-2026-110628", "display_id": "CVE-2026-110628", "ghsa_id": "GHSA-8p5c-vr7c-5g49", "euvd_id": "EUVD-2026-101256", "status": "published", "anchor_state": "anchored", "title": "Unauthenticated server-side request forgery in Kan", "summary": "Kan 0.5.5 through 0.6.0 exposes an SSRF condition in its attachment download API. An unauthenticated remote attacker may cause the server to make requests to internal network services or cloud metadata endpoints when S3_ENDPOINT is not configured.", "mitigation": "Set S3_ENDPOINT to avoid the documented vulnerable configuration, and restrict unauthenticated access to the attachment download API. Apply network egress controls that block access to internal addresses and metadata services from the Kan deployment.", "vendor": "kanbn", "product": "kan", "affected": [ { "affected_notes": [], "affected_ranges": [ "< 53397d8" ], "ecosystem": "https://github.com/kanbn/kan", "fixed_versions": [ ">= v5.5.0" ], "package_name": "Kan", "purl": null } ], "cwes": [ 918 ], "cvss_score": 9.2, "cvss_src": "cna_vendor", "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N", "epss_score": 0.0043, "epss_percentile": 0.3544, "epss_asof": "2026-10-20", "automation": "deterministic", "check": true, "check_confidence_basis": "differential", "exploit": true, "pipeline_minutes": 41.15509415, "t0_at": "2026-10-14T14:17:03.232000+00:00", "signals": { "check": { "at": "2026-10-14T16:01:08.215773+00:00", "days": 0.0722799047800926, "is_lower_bound": false, "measured_at": "2026-10-14T14:17:03.232000+00:00", "url": null }, "exploit": { "at": "2026-10-14T16:01:08.215773+00:00", "days": 0.0722799047800926, "is_lower_bound": false, "measured_at": "2026-10-14T14:17:03.232000+00:00", "url": null }, "trigger_signal": { "at": "2026-10-14T14:17:03.232000+00:00", "days": 0, "is_lower_bound": false, "measured_at": "2026-10-14T14:17:03.232000+00:00", "url": "https://www.cve.org/CVERecord?id=CVE-2026-110628" } } }
published 2026-10-14 15:19Z
last change 2026-10-21 05:00Z
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