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libvips EUVDEUVD-2026-46004

| CVE-2026-35591 HIGH
Heap-based Buffer Overflow (CWE-122)
2026-07-20 GitHub_M
Buffer Overflow Heap Overflow Libvips
7.0
CVSS 4.0 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
7.0 HIGH
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/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
vuln.today AI
9.1 CRITICAL

Malicious images commonly reach libvips-backed upload/thumbnail pipelines unauthenticated, so AV:N/PR:N; heap overflow yields high integrity/availability impact but no direct data disclosure, so C:N.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/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
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
Source Code Evidence Fetched
Jul 20, 2026 - 17:55 vuln.today
Analysis Generated
Jul 20, 2026 - 17:55 vuln.today
CVE Published
Jul 20, 2026 - 16:24 cve.org
HIGH 7.0

DescriptionCVE.org

libvips is a fast image processing library with low memory needs. The tiffload operation in libvips versions before and including 8.18.1 could incorrectly determine the number of channels in a JPEG or JPEG2000-encoded tile within a TIFF image, leading to a possible buffer overflow. This has been patched in version 8.18.2.

AnalysisAI

Heap buffer overflow in libvips' tiffload operation (versions ≤ 8.18.1) lets an attacker who supplies a crafted TIFF image trigger memory corruption during decode. The flaw stems from libvips incorrectly determining the channel/component count of a JPEG- or JPEG2000-encoded tile embedded in a TIFF, so the pixel buffer is sized from the TIFF photometric metadata while more components are written from the codec. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft TIFF with JPEG/JP2K tile
Delivery
Submit image to libvips tiffload
Exploit
Component count mismatch bypasses sizing
Execution
Overflow heap tile buffer
Impact
Corrupt memory, crash or potential code execution
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Vulnerability AssessmentAI

Exploitation The target application must process an attacker-supplied TIFF image with libvips ≤ 8.18.1 via the tiffload path, and that TIFF must contain JPEG- or JPEG2000-compressed tiles where the codec's component count differs from the TIFF's photometric_interpretation-derived bytes-per-pixel - that metadata/codec mismatch IS the trigger. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The vendor CVSS 4.0 vector (AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H, base 7.0) rates this a local, low-privilege issue with high integrity and availability impact and only low confidentiality impact - consistent with a memory-corruption bug that is more likely to crash or corrupt state than to leak data. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker uploads a specially crafted TIFF file whose tiles are JPEG- or JPEG2000-encoded and whose inner codec reports more color components than the TIFF photometric metadata declares. When a service backed by libvips (e.g. …
Remediation Vendor-released patch: 8.18.2 - upgrade libvips to 8.18.2 or later, which adds the component-count validation for JPEG and JP2K tiles (fix PR https://github.com/libvips/libvips/pull/4973, commit df044e409a0db77c980fa1a9f86a13fbfb2dc8fe). … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, identify all applications and systems in your infrastructure using libvips 8.18.1 or earlier, specifically noting which ones process TIFF images. …

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EUVD-2026-46004 vulnerability details – vuln.today
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