CVE-2026-3282: libvips unpremultiply.c vips_unpremultiply_build out-of-bounds

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-02-27 · updated 2026-06-17
Weakness: CWE-119

Description

A flaw has been found in libvips 8.19.0. This vulnerability affects the function vips_unpremultiply_build of the file libvips/conversion/unpremultiply.c. Executing a manipulation of the argument alpha_band can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been published and may be used. This patch is called 7215ead1e0cd7d3703cc4f5fca06d7d0f4c22b91. A patch should be applied to remediate this issue.

Affected products

libvips: 8.19.0

References

https://github.com/libvips/libvips/
https://github.com/libvips/libvips/commit/7215ead1e0cd7d3703cc4f5fca06d7d0f4c22b91
https://github.com/libvips/libvips/issues/4881
https://github.com/libvips/libvips/issues/4881#issue-3944216443
https://github.com/libvips/libvips/pull/4886
https://vuldb.com/?ctiid.348011
https://vuldb.com/?id.348011
https://vuldb.com/?submit.758862

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