CVE-2026-18300

GEGL (Generic Graphics Library) is a data flow based image processing framework, providing floating point processing and non-destructive image processing capabilities to GNU Image Manipulation Program and other projects (imgflo, GNOME Photos, gcut, iconographer, …) With GEGL you chain together processing operations to represent the desired image processing pipeline. GEGL provides operations for image loading and storing, color adjustments, GIMPs artistic filters and more forms of image processing GEGL can also be used from the commandline. The primary repository for the GEGL source code in GNOME git, and at GIMPs download site tarball releases. GEGL is Free Software, and both new functionality in new operations as well as relevant development, enhancement requests, patches and bug reports for GEGL at gitlab.gnome.org/GNOME/gegl , Finanical support for fun new filters and capabilities as well as gardening/janitor bits and offshoot new color related infrastructure as part of project maintainership is welcome through the patreon campaign at GIMPs donation page.

Security Fix(es):

GIMP HDR File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of HDR files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29289.(CVE-2026-18300)

GEGL (Generic Graphics Library) is a graph-based image processing framework.

Security Fix(es):

• gimp: gegl: GIMP: Remote code execution via integer overflow in HDR file parsing (CVE-2026-18300)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GEGL (Generic Graphics Library) is a graph-based image processing framework.

Security Fix(es):

• gimp: gegl: GIMP: Remote code execution via integer overflow in HDR file parsing (CVE-2026-18300)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GEGL (Generic Graphics Library) is a graph-based image processing framework.

Security Fix(es):

• gimp: gegl: GIMP: Remote code execution via integer overflow in HDR file parsing (CVE-2026-18300)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GIMP HDR File Parsing Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of HDR files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29289.

GEGL (Generic Graphics Library) is a graph-based image processing framework.

Security Fix(es):

• gimp: gegl: GIMP: Remote code execution via integer overflow in HDR file parsing (CVE-2026-18300)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GEGL (Generic Graphics Library) is a graph-based image processing framework.

Security Fix(es):

• gimp: gegl: GIMP: Remote code execution via integer overflow in HDR file parsing (CVE-2026-18300)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

GEGL (Generic Graphics Library) is a graph-based image processing framework.

Security Fix(es):

• gimp: gegl: GIMP: Remote code execution via integer overflow in HDR file parsing (CVE-2026-18300)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

• CVE-2026-18300: fix HDR file parsing integer overflow vulnerability

• CVE-2026-18300: fix integer overflow in RGBE scanline reading (rgbe_read_scanlines) leading to out-of-bounds write
• Run the RGBE bounds regression tests at build time

These are all security issues fixed in the gegl-0.4.70-2.1 package on the GA media of openSUSE Tumbleweed.

This update for gegl fixes the following issues:

Changes in gegl:

• CVE-2026-18300: libs/rgbe: fix >200kb report from ZDI (bsc#1276229)

This update for gegl fixes the following issue:

• CVE-2026-18300: integer overflow in HDR file parsing can allow undersized buffer allocations (bsc#1276229).