CVE-2026-54633

PoDoFo: Heap Out-of-Bounds Read in Indexed Color Space Image Decoding (FetchScanLine)

6.9 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Passive

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: High

Exploit likelihood

0.18%Unchanged since Sep 18, 2026

What each source reports

CVE List Score used 6.9

PoDoFo: Heap Out-of-Bounds Read in Indexed Color Space Image Decoding (FetchScanLine)

Record: CVE-2026-54633
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-125
Updated: 2026-11-02

EUVDEUVD-2026-82560 6.9

Record: EUVD-2026-82560
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

NVD 6.9

Record: CVE-2026-54633
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness: CWE-125
Updated: 2026-11-02

OSV 6.9

PoDoFo: Heap Out-of-Bounds Read in Indexed Color Space Image Decoding (FetchScanLine)

Record: CVE-2026-54633
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-125
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-54633 6.9

Record: UBUNTU-CVE-2026-54633
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

Affected products

podofo

Affected packages

Affected packages
Package	Affected	Fixed
`libpodofo` Ubuntu:Pro:14.04:LTS	All versions, plus listed versions 0.9.0-1.1ubuntu10.9.0-1.20.9.0-1.2ubuntu0.1~esm10.9.0-1.2ubuntu0.1~esm3	None known
`libpodofo` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 0.9.0-1.30.9.3-30.9.3-40.9.3-4ubuntu0.1~esm1	None known
`libpodofo` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 0.9.5-60.9.5-80.9.5-8build10.9.5-90.9.5-9ubuntu0.1~esm1	None known
`libpodofo` Ubuntu:Pro:20.04:LTS	All versions, plus listed versions 0.9.6+dfsg-50.9.6+dfsg-5build10.9.6+dfsg-5ubuntu0.1~esm1	None known
`libpodofo` Ubuntu:Pro:22.04:LTS	All versions, plus listed versions 0.9.7+dfsg-20.9.7+dfsg-2build10.9.7+dfsg-2build20.9.7+dfsg-30.9.7+dfsg-3ubuntu0.1~esm1	None known
`libpodofo` Ubuntu:24.04:LTS	All versions, plus listed versions 0.9.8+dfsg-3build10.9.8+dfsg-3build20.9.8+dfsg-3.1build10.9.8+dfsg-3.1build20.9.8+dfsg-3.1build3	None known
`libpodofo` Ubuntu:26.10	All versions, plus listed versions 0.9.8+dfsg-3.30.9.8+dfsg-3.3build1	None known
`libpodofo` Ubuntu:26.04:LTS	All versions, plus listed versions 0.9.8+dfsg-3.20.9.8+dfsg-3.3	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-54633 is a medium vulnerability (CVSS 6.9) in Podofo, published September 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. No source names a fixed version.