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CVE-2026-110223— Kavita 0.9.0 through 0.9.1.4 SSRF Blocklist Bypass via upload-cbl-file Endpoint

Quick assessment

Affected
Kareadita Kavita
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.

Kavita 0.9.0 至 0.9.1.4 版本存在服务器端请求伪造（SSRF）漏洞，经过身份验证的用户可通过 DNS 重绑定（DNS rebinding）或 HTTPS 重定向绕过 SSRF 黑名单。攻击者可以向 POST /api/Cbl/upload-cbl-file 接口提交一个 URL，该 URL 在通过验证后主机地址会发生重绑定或重定向到内部地址，从而实现盲探内部端口和服务。

CVSS 3.1 · Low

Affected Version Matrix 1

VendorProduct Version RangeStatus
Kareadita Kavita 0.9.0≤ 0.9.1.4 affected
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I. Basic Information for CVE-2026-110223

Vulnerability Information
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Vulnerability Title
Kavita 0.9.0 through 0.9.1.4 SSRF Blocklist Bypass via upload-cbl-file Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Kavita 0.9.0 through 0.9.1.4 contains a server-side request forgery vulnerability that allows authenticated users to bypass the SSRF blocklist through DNS rebinding or HTTPS redirects. Attackers can submit a URL to POST /api/Cbl/upload-cbl-file whose host rebinds or redirects to internal addresses after validation, enabling blind internal port and service probing.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Kareadita Kavita 0.9.0 ~ 0.9.1.4 -

II. Public POCs for CVE-2026-110223

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III. Intelligence Information for CVE-2026-110223

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Patches & Fixes for CVE-2026-110223 (1)

Vendor Advisories for CVE-2026-110223 (1)

Security Blog Posts for CVE-2026-110223 (1)

Vendor Pages for CVE-2026-110223 (1)

Other References for CVE-2026-110223 (1)

IV. Related Vulnerabilities

Same product: Kavita
Same vendor: Kareadita
Same weakness: CWE-918

V. Comments for CVE-2026-110223

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