PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-4151 GIMP CVE debrief

CVE-2026-4151 is a high-severity vulnerability in GIMP, a popular image editing software. The vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability, as the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of ANI files, where the lack of proper validation of user-supplied data 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.

Vendor
GIMP
Product
Unknown
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-11
Original CVE updated
2026-07-15
Advisory published
2026-04-11
Advisory updated
2026-07-15

Who should care

This vulnerability affects users of GIMP, particularly those who handle image files from untrusted sources. Organizations and individuals who use GIMP for image editing should be aware of this vulnerability and take steps to mitigate it. Additionally, security teams and administrators responsible for maintaining software updates and patches should prioritize this CVE.

Technical summary

The vulnerability exists in the ANI file parsing functionality of GIMP. When parsing ANI files, GIMP fails to properly validate user-supplied data, leading to an integer overflow. This overflow occurs before allocating a buffer, which can be exploited by attackers to execute arbitrary code. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. The CVSS vector is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating that the vulnerability can be exploited locally with low attack complexity and requires user interaction.

Defensive priority

High priority should be given to patching this vulnerability, as it allows for remote code execution. Organizations should ensure that all GIMP installations are updated to the latest version that includes a fix for this issue.

Recommended defensive actions

  • Apply the official patch or update GIMP to the latest version.
  • Restrict access to ANI files from untrusted sources.
  • Implement additional security measures, such as sandboxing or monitoring suspicious file parsing activities.
  • Conduct regular vulnerability assessments and maintain up-to-date software inventory.
  • Educate users about the risks associated with opening files from untrusted sources.

Evidence notes

The CVE-2026-4151 vulnerability was publicly disclosed on April 11, 2026, and has since been modified on June 30, 2026. The vulnerability is attributed to the lack of proper validation of user-supplied data in the ANI file parsing functionality of GIMP. The Common Weakness Enumeration (CWE) for this vulnerability is CWE-190, which refers to Integer Overflow or Wraparound.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-4151 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-4151

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-4151 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-4151

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Mitigation or vendor reference

    Unverified legacy reference

    URL: https://gitlab.gnome.org/GNOME/gimp/-/commit/09e5459de913172fc51da3bd6b6adc533acd368e

    [email protected] - Patch

  • Mitigation or vendor reference

    Unverified legacy reference

    URL: https://www.zerodayinitiative.com/advisories/ZDI-26-218/

    [email protected] - Third Party Advisory

  • Source reference

    Unverified legacy reference

    URL: https://access.redhat.com/errata/RHSA-2026:16484

    0b0ca135-0b70-47e7-9f44-1890c2a1c46c

  • Source reference

    Unverified legacy reference

    URL: https://access.redhat.com/errata/RHSA-2026:19362

    0b0ca135-0b70-47e7-9f44-1890c2a1c46c

  • Source reference

    Unverified legacy reference

    URL: https://access.redhat.com/security/cve/CVE-2026-4151

    0b0ca135-0b70-47e7-9f44-1890c2a1c46c

  • Source reference

    Unverified legacy reference

    URL: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4151.json

    0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.