Uncontrolled memory usage in Innodata Labs’ Poppler JPX decoder (CVE-2026-12600) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-12600

Uncontrolled memory usage in Innodata Labs’ Poppler JPX decoder

Answer in brief

CVE-2026-12600 records a Unknown severity vulnerability in Uncontrolled memory usage in Innodata Labs’ Poppler JPX decoder. The current sources do not mark it as known exploited. The current feed maps Poppler/Innodata Labs (generic), Poppler/Innodata Labs (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 25, 2026Updated Aug 26, 2026Source checked Aug 26, 2026First seen by HOL Aug 25, 2026Material review Aug 26, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Poppler/Innodata Labs (generic), Poppler/Innodata Labs (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Poppler/Innodata Labsgeneric	>=0 <*	*
Poppler/Innodata Labsgeneric	>=0 <25/08/2026	25/08/2026

Recommended response

Check inventory. Check lockfiles and deployed manifests for Poppler/Innodata Labs, Poppler/Innodata Labs.
Review the reported fix. Update Poppler/Innodata Labs to *; Poppler/Innodata Labs to 25/08/2026 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 25, 2026

Sources and claim methodology

Source referenceincibe.es

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.