---
id: CVE-2026-54633
title: PoDoFo is a C++17 PDF manipulation library
summary: >-
  PoDoFo is a C++17 PDF manipulation library. From version 1.0.0 until 1.1.1,
  processing a crafted PDF with an Indexed color-space image can cause a heap
  out-of-bounds read in PdfColorSpaceFilterIndexed::FetchScanLine in
  src/podofo/main/Pd…
severity: medium
cvss: 6.9
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-125
vendor: podofo
product: podofo
affected:
  - 'podofo >= 1.0.0, < 1.1.1'
published: '2026-09-17'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:16:28.120'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54633'
references:
  - url: >-
      https://github.com/podofo/podofo/commit/999c519d285c4a65eba48409d9cd2da9d4743cca
    label: security-advisories@github.com
  - url: 'https://github.com/podofo/podofo/releases/tag/1.1.1'
    label: security-advisories@github.com
  - url: 'https://github.com/podofo/podofo/security/advisories/GHSA-f3j2-7846-h5gg'
    label: security-advisories@github.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54633.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-54633'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-54633'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.0018
epssPercentile: 0.06797
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T01:52:36.922859Z'
cvssSource: cna
scores:
  cna: 6.9
  vendor: 6.1
ingestedAt: '2026-09-17T22:30:21.402Z'
---

## Overview

PoDoFo is a C++17 PDF manipulation library. From version 1.0.0 until 1.1.1, processing a crafted PDF with an Indexed color-space image can cause a heap out-of-bounds read in PdfColorSpaceFilterIndexed::FetchScanLine in src/podofo/main/PdfColorSpaceFilter.cpp. PODOFO_INVARIANT does not perform a runtime check, so a pixel index greater than or equal to m_MapSize can address beyond m_lookup. PdfColorSpaceFilterFactory::TryCreateFromObject also validates hival with an incorrect conjunction and no upper bound, allowing malformed Indexed color-space metadata outside the expected range. The resulting read can disclose adjacent heap data or crash the processing application. This issue is fixed in version 1.1.1.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · updated 2026-09-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54633.json)