EUVD-2026-63654Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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
libvips is typically invoked by web services processing untrusted uploads; a crafted HDR file alone triggers the flaw with no authentication or special interaction required.
Primary rating from Vendor (github).
CVSS VectorVendor: github
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Heap out-of-bounds read in libvips before 8.18.3 leaks four bytes of adjacent heap memory when parsing a crafted Radiance HDR image whose first scanline begins with an RLE repeat marker. The old-style decoder in scanline_read_old dereferences q[-1] without confirming a prior pixel exists, disclosing data most likely belonging to adjacent image buffers. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target application accept and load a Radiance HDR image (`.hdr` format) through libvips's `VipsForeignLoadRad` loader. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The official CVSS 4.0 score of 4.8 with AV:L/PR:L reflects a conservative, library-isolated perspective. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade libvips to version 8.18.3 or later, which contains the fix from commit dc945573e15d598054e701c65b90a35b16b19304 (https://github.com/libvips/libvips/commit/dc945573e15d598054e701c65b90a35b16b19304). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Heap Overflow
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External POC / Exploit Code
Leaving vuln.today