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CVE-2026-113658— ApostropheCMS: Unauthenticated CSV import requests leave rejected uploads in the system temporary directory

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 4.33.0 版本之前，未认证的富文本 CSV 转换路由会在检查文件扩展名之前，将多部分上传写入系统临时目录；当验证失败拒绝该文件时，系统也不会删除已暂存的临时文件。攻击者可利用正常的公开 CSRF 令牌，反复发起大规模被拒绝的上传请求，从而持续占用临时磁盘空间，可能导致 ApostropheCMS 以及依赖同一分区的其他服务中断。该问题已在 4.33.0 版本中修复。

CVSS 7.5 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
apostrophecms apostrophe < 4.33.0 affected
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I. Basic Information for CVE-2026-113658

Vulnerability Information
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Vulnerability Title
ApostropheCMS: Unauthenticated CSV import requests leave rejected uploads in the system temporary directory
Source: CVE Program / CVE List V5
Vulnerability Description
ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0, the unauthenticated Rich Text CSV conversion route writes a multipart upload to the system temporary directory before checking its extension and does not remove the staged file when that validation rejects it. Repeated large rejected uploads, using the normal public CSRF cookie, can persistently consume temporary-disk capacity and may disrupt ApostropheCMS and other services that depend on the same partition. This issue is fixed in version 4.33.0.
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 -

II. Public POCs for CVE-2026-113658

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III. Intelligence Information for CVE-2026-113658

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Other References for CVE-2026-113658 (4)

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

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-2026-113649 6.5 MEDIUM ApostropheCMS: Import API bypasses publication roles for protected content
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-2026-113659 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-2026-112951 5.4 MEDIUM ApostropheCMS: Color field validation bypass allows stored XSS via HTML appended after rgb
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-2026-113667 5.3 MEDIUM ApostropheCMS: CAPTCHA response token not URL-encoded
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-2026-113668 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
CVE-2026-113664 5.3 MEDIUM ApostropheCMS import-export tar guard misses './..' because it is a literal '../' substrin

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

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