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CVE-2026-113711— ApostropheCMS: Unauthenticated resource exhaustion via pre-auth aposBigUpload processing in @apostrophecms/import-export

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 是一个开源的基于 Node.js 的内容管理系统。在 ApostropheCMS 4.33.0 版本之前以及 import-export 模块 3.7.0 版本之前，导入路由在调用 bigUploadMiddleware 时缺少早期的授权回调，导致未经验证的请求能够在后续的用户检查拒绝导入操作之前，执行上传初始化、分块存储、临时处理以及由攻击者指定的清理操作。该问题已在 ApostropheCMS 4.33.0 和 import-export 3.7.0 中修复。

CVSS 7.5 · High

Affected Version Matrix 2

VendorProduct Version RangeStatus
@apostrophecms import-export < 3.7.0 affected
apostrophecms apostrophe < 4.33.0 affected
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I. Basic Information for CVE-2026-113711

Vulnerability Information
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Vulnerability Title
ApostropheCMS: Unauthenticated resource exhaustion via pre-auth aposBigUpload processing in @apostrophecms/import-export
Source: CVE Program / CVE List V5
Vulnerability Description
ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0 of ApostropheCMS and 3.7.0 of the import-export module, import routes invoke bigUploadMiddleware without an early authorize callback, allowing unauthenticated requests to perform upload initialization, chunk storage, temporary processing, and attacker-declared cleanup work before the later user check rejects the import. This issue is fixed in ApostropheCMS 4.33.0 and import-export 3.7.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
apostrophecms apostrophe < 4.33.0 -
@apostrophecms import-export < 3.7.0 -

II. Public POCs for CVE-2026-113711

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III. Intelligence Information for CVE-2026-113711

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Other References for CVE-2026-113711 (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-2026-113666 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-2026-113662 5.4 MEDIUM ApostropheCMS import-export: NoSQL injection via update-key value lets a crafted import ma
CVE-2026-113661 5.4 MEDIUM ApostropheCMS: Incomplete CVE-2026-53606: `meta http-equiv=refresh` `content` still ships
CVE-2026-112958 5.4 MEDIUM ApostropheCMS: Stored XSS via Unescaped Widget Style Attribute Serialization
CVE-2026-112951 5.4 MEDIUM ApostropheCMS: Color field validation bypass allows stored XSS via HTML appended after rgb
CVE-2026-113669 5.3 MEDIUM ApostropheCMS: Cross-domain session token in URL confers session takeover
CVE-2026-113654 5.3 MEDIUM ApostropheCMS sanitize-html: nonTextTags discard region ends early on an implied close, le
CVE-2026-113670 5.3 MEDIUM ApostropheCMS: Page REST API authorization bypass
CVE-2026-113650 5.3 MEDIUM ApostropheCMS sanitize-html: unbounded recursion when re-sanitizing the fallback of a disc
CVE-2026-113667 5.3 MEDIUM ApostropheCMS: CAPTCHA response token not URL-encoded
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-400

V. Comments for CVE-2026-113711

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