CVE-2026-18303

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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "GIMP", "vendor": "GIMP", "versions": [{"status": "affected", "version": "3.2.2"}]}], "source": "zdi-disclosures@trendmicro.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:gimp:gimp:3.2.2:*:*:*:*:*:*:*", "matchCriteriaId": "BC4288A7-0D8F-4D0E-B1A1-DE448A521562", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "GIMP TIF File Parsing Stack-based Buffer 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.\n\nThe specific flaw exists within the parsing of TIF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29399."}, {"lang": "es", "value": "Vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo por desbordamiento de b\u00fafer basado en pila en el parsing de archivos TIF de GIMP. Esta vulnerabilidad permite a atacantes remotos ejecutar c\u00f3digo arbitrario en instalaciones afectadas de GIMP. Se requiere interacci\u00f3n del usuario para explotar esta vulnerabilidad, ya que el objetivo debe visitar una p\u00e1gina maliciosa o abrir un archivo malicioso.\n\nLa falla espec\u00edfica existe dentro del parsing de archivos TIF. El problema resulta de la falta de validaci\u00f3n adecuada de la longitud de los datos proporcionados por el usuario antes de copiarlos a un b\u00fafer basado en pila. Un atacante puede aprovechar esta vulnerabilidad para ejecutar c\u00f3digo en el contexto del proceso actual. Fue ZDI-CAN-29399."}], "id": "CVE-2026-18303", "lastModified": "2026-10-26T10:10:00.140", "metrics": {"cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "zdi-disclosures@trendmicro.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-18303", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-21T03:57:20.764086Z", "version": "2.0.3"}}]}, "published": "2026-08-20T17:17:27.277", "references": [{"source": "zdi-disclosures@trendmicro.com", "tags": ["Patch"], "url": "https://gitlab.gnome.org/GNOME/gimp/-/commit/5633b362026c6e5b2beb559a10cd76fa32a47592"}, {"source": "zdi-disclosures@trendmicro.com", "tags": ["Third Party Advisory", "Patch"], "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-456/"}], "sourceIdentifier": "zdi-disclosures@trendmicro.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "zdi-disclosures@trendmicro.com", "type": "Secondary"}]}

{"bugzilla": {"description": "gimp: GIMP: Remote code execution via TIF file parsing vulnerability", "id": "2520583", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520583"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-120", "details": ["GIMP TIF File Parsing Stack-based Buffer 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.\nThe specific flaw exists within the parsing of TIF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29399.", "A flaw was found in GIMP. This vulnerability, a stack-based buffer overflow in the TIF file parsing component, allows a remote attacker to execute arbitrary code. User interaction is required, as the target must open a specially crafted malicious TIF file. The issue stems from insufficient validation of user-supplied data length before copying it to a buffer, leading to potential code execution in the context of the current process."], "mitigation": {"lang": "en:us", "value": "To mitigate this vulnerability, users should avoid opening TIF image files from untrusted or unknown sources. As this flaw requires user interaction to open a malicious file, exercising caution with file origins can prevent exploitation."}, "name": "CVE-2026-18303", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "gimp", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "gimp", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "gimp:2.8/gimp", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "gimp", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-20T16:23:19Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-18303\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-18303\nhttps://gitlab.gnome.org/GNOME/gimp/-/commit/5633b362026c6e5b2beb559a10cd76fa32a47592\nhttps://www.zerodayinitiative.com/advisories/ZDI-26-456/"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "3.2.2"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "GIMP", "source": "cna", "vendor": "GIMP"}, "product": "gimp", "vendor": "gimp"}], "created": "2026-08-20T18:45:02.953050+00:00", "updated": "2026-08-22T02:00:17.881403+00:00", "vendors": ["gimp", "gimp$PRODUCT$gimp"]}