# CVE-2026-59087: Gimp: heap buffer overflow in `file-seattle-filmworks` load — `fread` writes attacker-controlled length into undersized allocation

Status: published. Published: 2026-08-10. Updated: 2026-11-04.

A flaw was found in the GIMP image manipulation program, specifically within its Seattle Filmworks file loader. A remote attacker could exploit this vulnerability by tricking a user into opening a specially crafted Seattle Filmworks file. This could lead to a heap overflow, allowing the attacker to write several kilobytes of controlled data beyond the intended memory buffer. Such an overflow can result in memory corruption, potentially leading to arbitrary code execution or a denial of service.

## Remediation

- workaround: To mitigate this vulnerability, users should avoid opening Seattle Filmworks (.sfw) files from untrusted sources within the GIMP application. As a general security practice, exercise caution when handling any unsolicited or suspicious files. (source: CNA: redhat)

## Affected products and versions

-  /  (gimp): 3.2.4 (affected). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 6 (gimp): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (gimp): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (gimp): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (gimp): Version range not reported. Source: CNA: redhat

## NVD configuration conditions

Affected CPE matches depend on the following AND/OR and negation conditions:

```json
[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:gimp:gimp:3.2.4:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]
```

## Severity and prioritization

- CVSS 3.1: 7.8 (high); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H; source: CNA: redhat

- CVSS 3.1: 7.8 (high); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H; source: NVD: nvd@nist.gov

- CVSS 3.1: 7.8 (high); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H; source: NVD: secalert@redhat.com

- CISA KEV: No listing in collected sources

- EPSS: 0.49% as of 2026-11-04; percentile 42.34%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-787

## Exploit evidence

- exploit: https://gitlab.gnome.org/GNOME/gimp/-/work_items/16491 (ADP: CISA-ADP)
- exploit: https://gitlab.gnome.org/GNOME/gimp/-/work_items/16491 (secalert@redhat.com)
- exploit: https://gitlab.gnome.org/GNOME/gimp/-/work_items/16491 (134c704f-9b21-4f2e-91b3-4a467353bcc0)

## References

- https://access.redhat.com/security/cve/CVE-2026-59087 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2496576 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://gitlab.gnome.org/GNOME/gimp/-/work_items/16491 (CNA: redhat)

- https://gitlab.gnome.org/GNOME/gimp/-/work_items/16491 (ADP: CISA-ADP; exploit)

- https://access.redhat.com/security/cve/CVE-2026-59087 (secalert@redhat.com; Vendor Advisory)

- https://bugzilla.redhat.com/show_bug.cgi?id=2496576 (secalert@redhat.com; Issue Tracking, Vendor Advisory)

- https://gitlab.gnome.org/GNOME/gimp/-/work_items/16491 (secalert@redhat.com; Exploit, Mitigation, Vendor Advisory)

- https://gitlab.gnome.org/GNOME/gimp/-/work_items/16491 (134c704f-9b21-4f2e-91b3-4a467353bcc0; Exploit, Mitigation, Vendor Advisory)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-59087; retrieved 2026-11-05; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-59087; retrieved 2026-11-05; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-59087; retrieved 2026-11-05; source updated Not reported

Revision: 64567374861ddd89a5bff76c6a3c2adbce0ac64f81a3acaf9eaba6e418888293

Canonical: https://y2.dev/cve/CVE-2026-59087

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