EUVD-2026-66112
GHSA-r338-8qhf-wvrr
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Local file-open required with mandatory user interaction (AV:L, UI:R); any unprivileged user may be targeted (PR:N); impact bounded to heap read and crash with no integrity effect (C:L, I:N, A:L).
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Lifecycle Timeline
1DescriptionCVE.org
A flaw was found in the file-xwd plugin in GIMP. When processing a specially crafted XWD image file, the plugin validates the image width and bytes-per-line parameters independently rather than ensuring their combined values are consistent with the allocated buffer size. This incorrect validation leads to improper bounds checking, causing a heap out-of-bounds read. This issue can result in an application crash, leading to a denial of service, or a limited information disclosure of heap memory contents into the produced image.
AnalysisAI
Heap out-of-bounds read in GIMP's file-xwd plugin allows a crafted XWD image file to trigger an application crash or leak partial heap memory contents into the rendered image output. Users running GIMP on Red Hat Enterprise Linux 6 through 9 are affected when they open a malicious XWD file; the plugin fails to cross-validate image width and bytes-per-line parameters against the allocated buffer size, permitting an out-of-bounds read. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must actively open a specially crafted XWD image file in GIMP on Red Hat Enterprise Linux 6, 7, 8, or 9 - mandatory user interaction (UI:R) is required and is the primary limiting factor. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 4.4 (Medium) accurately reflects the constrained threat model: AV:L requires the malicious file to be opened locally, UI:R mandates that a user actively open the crafted file, and the impact is bounded to low confidentiality (heap data leakage) and low availability (crash), with no integrity impact (I:N) and unchanged scope (S:U). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts an XWD image file with a valid-looking but internally inconsistent width-to-bytes-per-line ratio and delivers it to a target via a phishing email, malicious website, or shared network drive. When the victim opens the file in GIMP on an affected RHEL system, the file-xwd plugin reads past the heap buffer boundary, either crashing GIMP abruptly or embedding fragments of heap memory into the output image, which the attacker could retrieve if the output is shared back. … |
| Remediation | Monitor the Red Hat security advisory at https://access.redhat.com/security/cve/CVE-2026-80101 and apply the patched GIMP package via standard RHEL package management (dnf update gimp or yum update gimp) once released. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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