Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-113671— ApostropheCMS: Host header controls server-side image fetch origin in @apostrophecms/ai-helper, enabling authenticated SSRF

Quick assessment

Affected
apostrophecms apostrophe
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.

ApostropheCMS 是一个开源的 Node.js 内容管理系统。在 AI 助手从 1.0.0-beta.10 到 1.0.0-beta.13 的版本中，具备图像生成功能的编辑器可以创建一条未存储提供者 URL 的 base64 编码图像记录，并在部署中使用本地相对存储且缺乏受信任的全局基础 URL 的情况下触发图像确认操作。服务器会将固定的上传路径与由请求控制的、基于 Host 头派生的源地址进行解析，从而允许向攻击者选定的主机、端口和 HTTP 源发起受限的服务器端请求；但无法实现任意路径读取，也不影响“

CVSS 4.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
@apostrophecms ai-helper >= 1.0.0-beta.10, < 1.0.0-beta.13 affected
apostrophecms apostrophe >= 4.25.0, < 4.33.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-113671

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
ApostropheCMS: Host header controls server-side image fetch origin in @apostrophecms/ai-helper, enabling authenticated SSRF
Source: CVE Program / CVE List V5
Vulnerability Description
ApostropheCMS is an open-source Node.js content management system. From 1.0.0-beta.10 until 1.0.0-beta.13 of the AI helper, an editor with image-generation capability can create a base64-generated image record without a stored provider URL and invoke image acceptance on a deployment using local relative storage with no trusted global base URL. The server resolves the fixed uploads path against a request-controlled Host-derived origin, enabling bounded server-side requests to an attacker-selected host, port, and HTTP origin, but not arbitrary-path retrieval or the stored-provider and absolute-storage configurations. This issue is fixed in AI helper 1.0.0-beta.13.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/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
apostrophecms apostrophe >= 4.25.0, < 4.33.0 -
@apostrophecms ai-helper >= 1.0.0-beta.10, < 1.0.0-beta.13 -

II. Public POCs for CVE-2026-113671

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-113671

请登录查看更多情报信息。

Other References for CVE-2026-113671 (4)

Same Patch Batch · apostrophecms · 2026-10-20 · 33 CVEs total

CVE-2026-113658 7.5 HIGH ApostropheCMS: Unauthenticated CSV import requests leave rejected uploads in the system te
CVE-2026-113711 7.5 HIGH ApostropheCMS: Unauthenticated resource exhaustion via pre-auth aposBigUpload processing i
CVE-2026-113666 7.1 HIGH ApostropheCMS: Authenticated projection-exclusion prototype-member deletion in @apostrophe
CVE-2026-113653 6.9 MEDIUM ApostropheCMS: The general public can access @apostrophecms/user objects via a relationshi
CVE-2026-112956 6.5 MEDIUM ApostropheCMS: Archive duplicate continuation lets contributors overwrite published conten
CVE-2026-112955 6.5 MEDIUM ApostropheCMS: Import archives can exhaust server storage and deny service
CVE-2026-113649 6.5 MEDIUM ApostropheCMS: Import API bypasses publication roles for protected content
CVE-2026-113659 6.1 MEDIUM ApostropheCMS: Client-side Prototype Pollution in apos.http.parseQuery leading to DOM-base
CVE-2026-112953 6.0 MEDIUM ApostropheCMS: Exposure of Sensitive Information via predictable export filenames
CVE-2026-113710 5.9 MEDIUM ApostropheCMS: No Attempt Throttling on Authenticated Password-Change Endpoint Enables Unl
CVE-2026-113652 5.6 MEDIUM ApostropheCMS uploadfs Azure backend leaks account-level SAS token into every public attac
CVE-2026-112958 5.4 MEDIUM ApostropheCMS: Stored XSS via Unescaped Widget Style Attribute Serialization
CVE-2026-113662 5.4 MEDIUM ApostropheCMS import-export: NoSQL injection via update-key value lets a crafted import ma
CVE-2026-112951 5.4 MEDIUM ApostropheCMS: Color field validation bypass allows stored XSS via HTML appended after rgb
CVE-2026-113661 5.4 MEDIUM ApostropheCMS: Incomplete CVE-2026-53606: `meta http-equiv=refresh` `content` still ships
CVE-2026-113669 5.3 MEDIUM ApostropheCMS: Cross-domain session token in URL confers session takeover
CVE-2026-113670 5.3 MEDIUM ApostropheCMS: Page REST API authorization bypass
CVE-2026-113667 5.3 MEDIUM ApostropheCMS: CAPTCHA response token not URL-encoded
CVE-2026-113668 5.3 MEDIUM ApostropheCMS: :_id/locales REST route omits the public-API authorization gate its sibling
CVE-2026-113656 5.3 MEDIUM ApostropheCMS: Unauthenticated unbounded multipart upload → disk-exhaustion DoS

Showing top 20 of 33 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: apostrophe
Same vendor: apostrophecms
Same weakness: CWE-918

V. Comments for CVE-2026-113671

No comments yet

Leave a comment