PDF Signer 3.0 contains a server-side template injection vulnerability that allows unauthenticated attackers to execute arbitrary code by injecting PHP commands through the CSRF-TOKEN cookie parameter. Attackers can craft malicious cookie values containing template injection payloads like shell_exec() to execute system commands and retrieve sensitive information from the server.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable yes

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
simcy_creative PDF Signer affected
Version Status Constraints
3.0 affected —

No data.

No data.

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No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://codecanyon.net/item/signer-create-digital-signatures-and-sign-pdf-documents-online/20737707 cve-icon cve-icon
https://codecanyon.net/user/simcy_creative cve-icon cve-icon
https://www.exploit-db.com/exploits/46276 cve-icon cve-icon
https://www.vulncheck.com/advisories/pdf-signer-server-side-template-injection-rce-via-csrf-cookie cve-icon cve-icon
History

Thu, 04 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 04 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Description PDF Signer 3.0 contains a server-side template injection vulnerability that allows unauthenticated attackers to execute arbitrary code by injecting PHP commands through the CSRF-TOKEN cookie parameter. Attackers can craft malicious cookie values containing template injection payloads like shell_exec() to execute system commands and retrieve sensitive information from the server.
Title PDF Signer 3.0 Server-Side Template Injection RCE via CSRF Cookie
Weaknesses CWE-352
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-06-04T14:01:26.991Z

Reserved: 2026-06-04T10:52:00.250Z

Link: CVE-2019-25729

cve-icon Vulnrichment

Updated: 2026-06-04T14:01:21.557Z

cve-icon NVD

Status : Deferred

Published: 2026-06-04T14:16:30.630

Modified: 2026-06-04T15:00:40.757

Link: CVE-2019-25729

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-04T14:45:16Z

Weaknesses