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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.

PUBLISHED Reserved 2026-02-26 | Published 2026-02-27 | Updated 2026-02-27 | Assigner VulDB




MEDIUM: 4.8CVSS: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:P
LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
LOW: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
1.7AV:L/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:OF/RC:C

Problem types

Out-of-Bounds Read

Memory Corruption

Timeline

2026-02-26:Advisory disclosed
2026-02-26:VulDB entry created
2026-02-26:VulDB entry last update

Credits

Niebelungen (VulDB User) reporter

References

vuldb.com/?id.348011 (VDB-348011 | libvips unpremultiply.c vips_unpremultiply_build out-of-bounds) vdb-entry technical-description

vuldb.com/?ctiid.348011 (VDB-348011 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.758862 (Submit #758862 | libvips 8.19.0(7fab325d2) Out-of-Bounds Read) third-party-advisory

github.com/libvips/libvips/issues/4881 issue-tracking

github.com/libvips/libvips/pull/4886 issue-tracking patch

github.com/libvips/libvips/issues/4881 exploit issue-tracking

github.com/...ommit/7215ead1e0cd7d3703cc4f5fca06d7d0f4c22b91 patch

github.com/libvips/libvips/ product

cve.org (CVE-2026-3282)

nvd.nist.gov (CVE-2026-3282)

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