CVE-2019-25729

PDF Signer 3.0 Server-Side Template Injection RCE via CSRF Cookie

CVSS 9.3 CRITICALEPSS 0.3%CWE-352

Vexday Risk Score

48Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 9.3EPSS 0.3%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

04 Jun 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

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

Affected products

simcy_creative · PDF Signer

public PoCs found — 1

cve_referencewww.exploit-db.com/exploits/46276unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

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