Cyber Resilience

CVE-2026-30276

Path Traversal in Deftpdf Document Translator 54.0

Public PoCPath Traversal
Published
31 March 2026
Modified
24 July 2026
Patch / advisory
View advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0067 50th percentile
Risk Priority 72 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2026-30276 is a critical-severity External Control of File Name or Path (CWE-73) vulnerability in Deftpdf Document Translator. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data from Local System (T1005); ranked in the top 50% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and AC-3 (Access Enforcement) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2026-30276 is an arbitrary file overwrite vulnerability in DeftPDF Document Translator version 54.0. The issue enables attackers to overwrite critical internal files via the file import process, which can lead to arbitrary code execution or information exposure. It carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), marking it as critical severity, and maps to CWE-73 (External Control of File Name or Path). The vulnerability was published on 2026-03-31.

Remote, unauthenticated attackers can exploit this flaw over the network with low attack complexity and no user interaction required. By submitting malicious files through the import functionality, they can target and overwrite essential system files, achieving high-impact effects including arbitrary code execution on the affected system or exposure of sensitive data.

Advisories and further details are available via vendor and researcher references, including https://deftpdf.com/, https://github.com/Secsys-FDU/AF_CVEs/issues/22, and https://secsys.fudan.edu.cn/. Security practitioners should review these sources for recommended mitigations, patches, or workarounds specific to DeftPDF Document Translator v54.0.

OWASP Top 10 for Web (2025)

A06:2025 Insecure Design

EU & UK References

Vulnerability Data

An arbitrary file overwrite vulnerability in DeftPDF Document Translator v54.0 allows attackers to overwrite critical internal files via the file import process, leading to arbitrary code execution or information exposure.

CWE(s)
CWE-73

Related Threats

MITRE ATT&CK Enterprise Techniques

T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
T1083 File and Directory Discovery Discovery
Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1574.007 Path Interception by PATH Environment Variable Stealth
Adversaries may execute their own malicious payloads by hijacking environment variables used to load libraries.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-1056Shared CWE-73
CVE-2026-26157Shared CWE-73
CVE-2026-30287Shared CWE-73
CVE-2025-12137Shared CWE-73
CVE-2026-72742Shared CWE-73
CVE-2026-76217Shared CWE-73
CVE-2026-50162Shared CWE-73
CVE-2025-65799Shared CWE-73
CVE-2025-21377Shared CWE-73
CVE-2026-12979Shared CWE-73

Affected Assets

deftpdf
document translator
54.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V5.3.2

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match

Input validation directly rejects or sanitizes untrusted path strings before they reach filesystem operations.

AC-3 Access Enforcement partial match

Enforces authorization checks on the actual resource accessed, blocking unauthorized files even when a malicious path is supplied.

AC-6 Least Privilege partial match

Least-privilege limits the set of files or directories any subject can affect, shrinking the blast radius of a path-control flaw.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-05 partial match
prevents

Least-privilege file authorization directly limits damage from externally controlled paths.

PR.PS-06 partial match
prevents

Secure SDLC practices include input validation and path sanitization that eliminate this weakness.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle mandates input validation and path-handling controls that directly prevent external file/path manipulation.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for controls against untrusted input influencing file operations.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles discourage unsafe path construction but do not prescribe concrete file-name controls.

A.8.28 Secure coding partial match
prevents

Secure coding standards require canonicalization, allow-listing, and bounds checks on file paths, directly eliminating CWE-73.

A.8.29 Security testing in development and acceptance partial match
finds

Security testing can detect path-traversal issues but does not itself implement preventive controls.

A.8.3 Information access restriction partial match
mitigates

Information access restriction limits which files can be reached, indirectly reducing impact of path manipulation.

References