{"api_version":"1","generated_at":"2026-10-07T01:19:30+00:00","cve":"CVE-2026-106115","urls":{"html":"https://cve.report/CVE-2026-106115","api":"https://cve.report/api/cve/CVE-2026-106115.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-106115","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-106115"},"summary":{"title":"ImageSharp: TIFF CCITT T6 encoder writes beyond an undersized output buffer","description":"ImageSharp is a 2D graphics library. From 2.1.0 until 4.1.2, the TIFF CCITT Group 4 encoder allocates Width times rowsPerStrip bytes even though T6BitCompressor.CompressStrip can emit encoded row data and two 12-bit end-of-facsimile-block codes beyond that capacity. TiffCcittCompressor.WriteCode performs unchecked writes, and a decode-and-re-encode flow can inherit TiffCompression.CcittGroup4Fax and one-bit metadata from attacker-supplied input. The resulting out-of-bounds writes can corrupt memory and terminate the process. 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From 2.1.0 until 4.1.2, the TIFF CCITT Group 4 encoder allocates Width times rowsPerStrip bytes even though T6BitCompressor.CompressStrip can emit encoded row data and two 12-bit end-of-facsimile-block codes beyond that capacity. TiffCcittCompressor.WriteCode performs unchecked writes, and a decode-and-re-encode flow can inherit TiffCompression.CcittGroup4Fax and one-bit metadata from attacker-supplied input. The resulting out-of-bounds writes can corrupt memory and terminate the process. This issue is fixed in version 4.1.2."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-06T17:50:15.754Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-jjfr-hcj7-qf5w","tags":["x_refsource_CONFIRM"],"url":"https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-jjfr-hcj7-qf5w"},{"name":"https://github.com/SixLabors/ImageSharp/pull/3187","tags":["x_refsource_MISC"],"url":"https://github.com/SixLabors/ImageSharp/pull/3187"},{"name":"https://github.com/SixLabors/ImageSharp/commit/a9498c6db3642ef92c712ebc81e706914ac16a95","tags":["x_refsource_MISC"],"url":"https://github.com/SixLabors/ImageSharp/commit/a9498c6db3642ef92c712ebc81e706914ac16a95"},{"name":"https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2","tags":["x_refsource_MISC"],"url":"https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2"}],"source":{"advisory":"GHSA-jjfr-hcj7-qf5w","discovery":"UNKNOWN"},"title":"ImageSharp: TIFF CCITT T6 encoder writes beyond an undersized output buffer"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-106115","datePublished":"2026-10-06T17:50:15.754Z","dateReserved":"2026-10-06T15:33:55.333Z","dateUpdated":"2026-10-06T17:50:15.754Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-06 18:16:53","lastModifiedDate":"2026-10-06 20:03:40","problem_types":["CWE-787","CWE-787 CWE-787: Out-of-bounds Write"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"106115","Ordinal":"1","Title":"ImageSharp: TIFF CCITT T6 encoder writes beyond an undersized ou","CVE":"CVE-2026-106115","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"106115","Ordinal":"1","NoteData":"ImageSharp is a 2D graphics library. From 2.1.0 until 4.1.2, the TIFF CCITT Group 4 encoder allocates Width times rowsPerStrip bytes even though T6BitCompressor.CompressStrip can emit encoded row data and two 12-bit end-of-facsimile-block codes beyond that capacity. TiffCcittCompressor.WriteCode performs unchecked writes, and a decode-and-re-encode flow can inherit TiffCompression.CcittGroup4Fax and one-bit metadata from attacker-supplied input. The resulting out-of-bounds writes can corrupt memory and terminate the process. This issue is fixed in version 4.1.2.","Type":"Description","Title":"ImageSharp: TIFF CCITT T6 encoder writes beyond an undersized ou"}]}}}