LiveActive security incident?Get immediate response
CVE Record

CVE-2016-4026: An issue was discovered in Open-Xchange OX App Suite before 7.8.1-rev11.

An issue was discovered in Open-Xchange OX App Suite before 7.8.1-rev11. The content sanitizer component has an issue with filtering malicious content in case invalid HTML code is provided. In such cases the filter will output a unsanitized representation of the content. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.). Attackers can use this issue for filter evasion to inject script code later on.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysis

Security readout for executives and security teams

Open-Xchange OX App Suite had a sanitizer flaw before 7.8.1-rev11. Malformed HTML could bypass filtering and let script run as the victim user. That could expose sessions or trigger webmail actions such as sending mail or deleting data. Exposure is likely limited to Open-Xchange OX App Suite deployments before 7.8.1-rev11 that process or render user-supplied HTML through the affected sanitizer. Prioritize remediation if OX App Suite is internet-facing or handles sensitive mail. The main business risk is account misuse through victim-browser script execution, though public exploit activity is not evidenced here. Mitigation focus: Inventory OX App Suite deployments and identify versions before 7.8.1-rev11.; Upgrade affected systems to 7.8.1-rev11 or later, following Open-Xchange guidance.; Review vendor advisory for supported branches, backports, and any compensating controls..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2016-4026 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
1Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.