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CVE-2026-112956— ApostropheCMS: Archive duplicate continuation lets contributors overwrite published content

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 是一款开源的 Node.js 内容管理系统。在导入/导出模块 3.7.1 版本之前，重复导入的延续功能会接受由客户端控制的替换选项，却未将这些选项绑定到由用户拥有的服务端分析流程，也未对目标资源进行授权验证。在启用了导入功能的本地化类型中，拥有草稿编辑权限的贡献者可以通过选择已发布文档进行替换，从而突破发布边界。当前的评估主要基于修复方案的审查，而非重复的端到端复现验证。该问题已在 3.7.1 版本中修复。

CVSS 6.5 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
@apostrophecms mport-export < 3.7.1 affected
apostrophecms apostrophe < 4.34.0 affected
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I. Basic Information for CVE-2026-112956

Vulnerability Information
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Vulnerability Title
ApostropheCMS: Archive duplicate continuation lets contributors overwrite published content
Source: CVE Program / CVE List V5
Vulnerability Description
ApostropheCMS is an open-source Node.js content management system. Prior to 3.7.1 of the import-export module, duplicate-import continuation accepts client-controlled replacement choices without binding them to a user-owned server-side analysis or authorizing the canonical target. On an import-enabled localized type, a contributor with draft editing authority can cross the publication boundary by selecting a published document for replacement, although the current assessment is based on remediation review rather than a repeated end-to-end reproduction. This issue is fixed in version 3.7.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
apostrophecms apostrophe < 4.34.0 -
@apostrophecms mport-export < 3.7.1 -

II. Public POCs for CVE-2026-112956

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III. Intelligence Information for CVE-2026-112956

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Other References for CVE-2026-112956 (3)

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-2026-113658 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-2026-113649 6.5 MEDIUM ApostropheCMS: Import API bypasses publication roles for protected content
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-863

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