Ghostscript Heap Buffer Overflow Vulnerability Disclosed
CVE-2026-39919 allows remote code execution via crafted PDF files
Key Takeaways
- A heap buffer overflow vulnerability (CVE-2026-39919) affects the Ghostscript interpreter and rendering engine.
- The flaw could allow remote code execution via specially crafted PDF files.
- Servers processing PDF uploads through Ghostscript may be affected.
- Users should update to the latest patched version of Ghostscript.
- Monitor official Ghostscript advisories for further details and patch releases.
Quick answers
- What happened?
- A critical heap buffer overflow vulnerability in the Ghostscript interpreter and rendering engine has been tracked as CVE-2026-39919. The flaw could allow remote code execution when specially crafted PDF files are processed, potentially affecting servers that handle PDF uploads.
- Which products are affected?
- Ghostscript interpreter and rendering engine
- What should defenders do?
- Update to the latest patched version of Ghostscript. Apply security updates from the Ghostscript project. Monitor official advisories for patch availability and mitigation guidance.
- Which vulnerabilities are involved?
- CVE-2026-39919
A critical heap buffer overflow vulnerability (CVE-2026-39919) in the Ghostscript interpreter and rendering engine could allow remote code execution through specially crafted PDF files. According to reports, the flaw arises from improper handling of certain PDF structures, which may trigger a buffer overflow during rendering or interpretation. Servers that process PDF files through Ghostscript, particularly in web application contexts involving PDF uploads, may be at risk of remote code execution. The Ghostscript project has been notified, and users are advised to update to the latest patched version. As of the time of reporting, specific details regarding active exploitation in the wild, affected version ranges, and official advisory releases remain under verification. Security teams are encouraged to monitor official Ghostscript advisories for patch availability and mitigation guidance.
Security Details
Heap buffer overflow in the Ghostscript interpreter and rendering engine allowing remote code execution via crafted PDF files.
Affected products
Ghostscript interpreter and rendering engine
Mitigation
Update to the latest patched version of Ghostscript. Apply security updates from the Ghostscript project. Monitor official advisories for patch availability and mitigation guidance.
Sources
BleepingComputer
Ghostscript flaw lets hackers hijack servers via PDF uploads
Oct 13, 2026 · 21:33
Original link
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