Medium · CVSS 4.8CVE-2026-70653

libvips: Possible heap-based buffer read overflow when decoding a well-crafted RLE Radiance imageCVE-2026-70653

Answer in brief

CVE-2026-70653 records a Medium severity (CVSS 4.8) vulnerability in libvips: Possible heap-based buffer read overflow when decoding a well-crafted RLE Radiance image. The current sources do not mark it as known exploited. The current feed maps libvips/libvips (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 20, 2026Updated Sep 18, 2026Source checked Oct 5, 2026First seen by HOL Aug 20, 2026Material review Sep 18, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 4.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 4.8. 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 libvips/libvips (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
libvips/libvipsgeneric	<8.18.3	8.18.3

Recommended response

Check inventory. Check lockfiles and deployed manifests for libvips/libvips.
Review the reported fix. Update libvips/libvips to 8.18.3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 20, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 18, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 20, 2026

Sources and claim methodology

Upstream source description

libvips is a fast image processing library with low memory needs. Prior to version 8.18.3, the old-style Radiance RLE decoder in libvips/foreign/radiance.c can process a repeat marker at the beginning of a scanline in scanline_read_old and read q[-1] before any prior pixel exists. A crafted Radiance image loaded through VipsForeignLoadRad can therefore disclose four bytes of adjacent heap data, most likely other image data. This issue is fixed in version 8.18.3.

Quoted source text, attributed separately from HOL analysis.