Vulnerability · Published Aug 25, 2026 · Assigned by INCIBE
CVE-2026-12600Uncontrolled memory usage in Innodata Labs’ Poppler JPX decoder
High 8.7
In plain English
A high-severity uncontrolled resource consumption in Innodata Labs from Poppler. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).
Official description
Denial-of-service (DoS) vulnerability in the internal JPEG2000 (JPX) decoding implementation of the Poppler fork developed by Innodata Labs. When an application processes an untrusted PDF file containing specially crafted JPXDecode images, a remote attacker can cause uncontrolled memory consumption. The flaw occurs in the JPXStream::readCodestream() function, where values controlled from the SIZ segment (such as img.nComps) are used for the memory allocation of tiles and components without adequate validation. This allows an attacker to force excessive memory allocation and cause a resource exhaustion, ultimately causing the pdftoppm process to terminate due to out-of-memory (OOM) conditions.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Poppler | Innodata Labs | 0 – before 25/08/2026 |
Weakness: CWE-400 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N