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CVE-2026-73230— Ente: 2of3 cards v1 contain a checksum that enables offline guessing of low-entropy secrets

Quick assessment

Affected
ente ente
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ente是Ente组织的一款提供端到端加密照片与视频同步备份的服务。 Ente 2026.07.28之前版本存在信息泄露漏洞，该漏洞源于2of3卡片格式版本1将秘密字节长度和32位FNV-1a校验和以明文存储在每个卡片上，可能导致拥有一个卡片的人离线测试候选秘密并恢复低熵或可预测的秘密。

CVSS 5.9 · Medium EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1110 · Brute Force

Affected Version Matrix 1

VendorProduct Version RangeStatus
ente ente < 2026.07.28 affected
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I. Basic Information for CVE-2026-73230

Vulnerability Information
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Vulnerability Title
Ente: 2of3 cards v1 contain a checksum that enables offline guessing of low-entropy secrets
Source: CVE Program / CVE List V5
Vulnerability Description
Ente provides end-to-end encrypted cloud services and security tools. Prior to 2026.07.28, Ente 2of3 card format version 1 stored the secret byte length and 32-bit FNV-1a checksum in cleartext on every card, allowing someone with one card to test candidate secrets offline and recover low-entropy or predictable secrets. This issue is fixed in version 2026.07.28.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Ente 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ente是Ente组织的一款提供端到端加密照片与视频同步备份的服务。 Ente 2026.07.28之前版本存在信息泄露漏洞，该漏洞源于2of3卡片格式版本1将秘密字节长度和32位FNV-1a校验和以明文存储在每个卡片上，可能导致拥有一个卡片的人离线测试候选秘密并恢复低熵或可预测的秘密。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ente ente < 2026.07.28 -

II. Public POCs for CVE-2026-73230

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III. Intelligence Information for CVE-2026-73230

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Patches & Fixes for CVE-2026-73230 (2)

Vendor Advisories for CVE-2026-73230 (1)

IV. Related Vulnerabilities

Same product: ente
Same vendor: ente
Same weakness: CWE-200

V. Comments for CVE-2026-73230

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