CVE-2026-110628

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.42% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 36.4% of scored records. A rank, not a probability.

NVD base score

9.2 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-10-16.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-14 14:17Z14 DAYS AGO

Last updated

2026-10-16 17:16Z12 DAYS AGO

Reserved

2026-10-14

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Critical (CVSS 9.2)

CNA 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

Weaknesses

• CWE-918Server-Side Request Forgery (SSRF)Base

Data version

5.2

Document digest

327504baacb78bb2c03b13994ab9282bc1a7567befa5883742678d385e530366

• hackmd.iohttps://hackmd.io/@leediay/HyIxU63ofgthird-party-advisory
• github.comOpen PR describing the S3_ENDPOINT-unset bypasshttps://github.com/kanbn/kan/pull/590issue-trackingpatch
• github.comallowlist conditional on S3_ENDPOINT, unconditional fetch(url)https://github.com/kanbn/kan/blob/v0.6.0/apps/web/src/pages/api/download/attatchment.ts#L21-L52technical-description
• github.comS3_ENDPOINT documented as blank for AWS S3https://github.com/kanbn/kan/blob/v0.6.0/.env.example#L25-L27technical-description
• github.comGitHub Security Advisory (GHSA-qrx8-9hc6-jvqg)https://github.com/kanbn/kan/security/advisories/GHSA-qrx8-9hc6-jvqgvendor-advisory
• github.comIncomplete fix for CVE-2026-32255https://github.com/kanbn/kan/commit/53397d8e81dc1494d94132848c1f0416f1152bd7patch
• github.comhttps://github.com/kanbn/kanproduct
• www.vulncheck.comVulnCheck Advisory: Kan 0.5.5 through 0.6.0 Unauthenticated SSRF via /api/download/attatchmenthttps://www.vulncheck.com/advisories/kan-0.5.5-through-0.6.0-unauthenticated-ssrf-via-api-download-attatchmentthird-party-advisory