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CVE-2026-121890— Adobe Connect | Improper Restriction of XML External Entity Reference ('XXE') (CWE-611)

Quick assessment

Affected
Adobe Adobe Connect
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.

Adobe Connect 受 XML 外部实体引用（XXE）限制不当漏洞的影响，可能导致攻击者任意读取文件系统。低权限攻击者可利用此漏洞访问超出预期访问范围的敏感文件和目录。利用该漏洞无需用户交互。影响范围已更新。

CVSS 7.7 · High
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I. Basic Information for CVE-2026-121890

Vulnerability Information
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Vulnerability Title
Adobe Connect | Improper Restriction of XML External Entity Reference ('XXE') (CWE-611)
Source: CVE Program / CVE List V5
Vulnerability Description
Adobe Connect is affected by an Improper Restriction of XML External Entity Reference ('XXE') vulnerability that could lead to arbitrary file system read. A low-privileged attacker could exploit this vulnerability to access sensitive files and directories outside the intended access scope. Exploitation of this issue does not require user interaction. Scope is changed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
XML外部实体引用的不恰当限制(XXE)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Adobe Adobe Connect 0 ~ 12.8 -
Adobe Adobe Connect 0 ~ 12.9 -
Adobe Adobe Connect 0 ~ 12.10 -
Adobe Adobe Connect 0 ~ 12.11 -
Adobe Adobe Connect 0 ~ 12.12 -

II. Public POCs for CVE-2026-121890

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-121890

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Other References for CVE-2026-121890 (1)

Same Patch Batch · Adobe · 2026-11-10 · 110 CVEs total

CVE-2026-121353 10.0 CRITICAL Adobe Connect | Improper Neutralization of CRLF Sequences ('CRLF Injection') (CWE-93)
CVE-2026-121352 10.0 CRITICAL Adobe Connect | Incorrect Authorization (CWE-863)
CVE-2026-121356 10.0 CRITICAL Adobe Connect | Server-Side Request Forgery (SSRF) (CWE-918)
CVE-2026-121889 10.0 CRITICAL Adobe Connect | Server-Side Request Forgery (SSRF) (CWE-918)
CVE-2026-121351 10.0 CRITICAL Adobe Connect | Improper Limitation of a Pathname to a Restricted Directory ('Path Travers
CVE-2026-113580 9.9 CRITICAL Adobe Experience Manager | Improper Control of Generation of Code ('Code Injection') (CWE-
CVE-2026-121892 9.9 CRITICAL Adobe Connect | Improper Control of Generation of Code ('Code Injection') (CWE-94)
CVE-2026-121887 9.9 CRITICAL Adobe Connect | Improper Restriction of XML External Entity Reference ('XXE') (CWE-611)
CVE-2026-121354 9.9 CRITICAL Adobe Connect | Improper Limitation of a Pathname to a Restricted Directory ('Path Travers
CVE-2026-121908 9.9 CRITICAL Adobe Connect | Improper Neutralization of Special Elements used in an SQL Command ('SQL I
CVE-2026-121896 9.9 CRITICAL Adobe Connect | Improper Neutralization of Special Elements used in an SQL Command ('SQL I
CVE-2026-121898 9.9 CRITICAL Adobe Connect | Improper Neutralization of Special Elements used in an SQL Command ('SQL I
CVE-2026-113579 9.9 CRITICAL Adobe Experience Manager | Improper Control of Generation of Code ('Code Injection') (CWE-
CVE-2026-121906 9.9 CRITICAL Adobe Connect | Improper Limitation of a Pathname to a Restricted Directory ('Path Travers
CVE-2026-121894 9.9 CRITICAL Adobe Connect | Improper Neutralization of Special Elements used in an SQL Command ('SQL I
CVE-2026-119017 9.9 CRITICAL Adobe Experience Manager | Incorrect Authorization (CWE-863)
CVE-2026-114371 9.9 CRITICAL Adobe Experience Manager | Incorrect Authorization (CWE-863)
CVE-2026-121904 9.6 CRITICAL Adobe Connect | Cross-site Scripting (Stored XSS) (CWE-79)
CVE-2026-121349 9.6 CRITICAL Adobe Connect | Improper Limitation of a Pathname to a Restricted Directory ('Path Travers
CVE-2026-121902 9.4 CRITICAL Adobe Connect | Improper Neutralization of Special Elements used in an SQL Command ('SQL I

Showing top 20 of 110 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Adobe Connect
Same vendor: Adobe
Same weakness: CWE-611