CVE-2026-53964

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Source
https://cve.org/CVERecord?id=CVE-2026-53964
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53964.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-53964
Aliases
Published
2026-10-01T19:55:07Z
Modified
2026-10-28T02:30:47Z
Severity
  • 7.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Document Merge Service vulnerable to RCE via SSTI (xlsx tempaltes)
Details

Document Merge Service is a document template merge service providing an API to manage templates and merge them with given data. Prior to version 9.1.0, a remote code execution (RCE) via server-side template injection (SSTI) allows for user supplied code to be executed in the server's context where it is executed as the document-merge-server user with the UID 901 thus giving an attacker considerable control over the container. The vulnerability is limited to XLSX templates, were the xltpl library uses a npn-sandboxed Jinja environment for the processing of the template. This issue has been patched in version 9.1.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-1336"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53964.json"
}
References

Affected packages

Git / github.com/adfinis/document-merge-service

Affected ranges

Type
GIT
Repo
https://github.com/adfinis/document-merge-service
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
243368823e7f63865f318519f805b481458a0dcd
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "9.1.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "original_tag":  "v9.1.0",
            "range":  [
                {
                    "fixed":  "243368823e7f63865f318519f805b481458a0dcd"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "9.1.0"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

v0.*
v0.0.1
v1.*
v1.0.0
v3.*
v3.0.0
v4.*
v4.0.0-rc.1
v4.0.1
v4.1.0
v4.2.0
v4.2.1
v4.3.0
v4.4.0
v4.4.1
v4.5.0
v4.6.0
v4.6.1
v4.6.2
v4.6.3
v4.7.0
v5.*
v5.0.0
v5.0.1
v5.0.2
v5.0.3
v5.0.4
v5.0.5
v5.0.6
v5.1.0
v5.2.0
v5.2.1
v6.*
v6.0.0
v6.1.0
v6.1.1
v6.1.2
v6.2.0
v6.2.1
v6.2.2
v6.3.0
v6.3.1
v6.4.0
v6.4.1
v6.4.2
v6.4.3
v6.4.4
v6.4.5
v6.5.0
v6.5.1
v6.5.2
v6.6.0
v6.6.1
v7.*
v7.0.0
v7.0.1
v7.0.2
v7.1.0
v7.1.1
v7.2.0
v7.3.0
v7.3.1
v7.3.2
v7.3.3
v7.3.4
v7.3.5
v7.3.6
v7.3.7
v8.*
v8.0.0
v8.0.1
v8.0.2
v8.0.3
v8.1.0
v9.*
v9.0.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53964.json"