{"id":"CVE-2026-48977","state":"PUBLISHED","title":"OpenSlide: Arbitrary memory write with crafted Ventana BIF file","description":"OpenSlide is a C library for reading whole slide image files. From 3.4.1 until 4.0.1, OpenSlide's parse_level0_xml() processing in src/openslide-vendor-ventana.c accepts nonpositive row or column tile counts from a crafted Ventana BIF file. The invalid counts produce attacker-controlled relative memory offsets and allow arbitrary values to be written at those offsets, affecting all supported platforms and configurations and resulting in a crash or potential arbitrary code execution. This issue is fixed in version 4.0.1.","publishedAt":"2026-09-17T20:26:21.921Z","updatedAt":"2026-09-18T20:07:13.789Z","severity":{"score":7.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["openslide openslide"],"affected":[{"vendor":"openslide","product":"openslide","versions":[{"version":">= 3.4.1, < 4.0.1","status":"affected"}]}],"references":["https://github.com/openslide/openslide/security/advisories/GHSA-mxg2-48g7-fmwc","https://github.com/openslide/openslide/pull/751","https://github.com/openslide/openslide/commit/2be88bd782d9fff46de8e56a99baca523e7917b3","https://github.com/openslide/openslide/releases/tag/v4.0.1"],"weaknesses":["CWE-123","CWE-823","CWE-1284"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/48xxx/CVE-2026-48977.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-48977","state":"PUBLISHED","datePublished":"2026-09-17T20:26:21.921Z","dateUpdated":"2026-09-18T20:07:13.789Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-26T23:26:07.974Z"},"containers":{"cna":{"title":"OpenSlide: Arbitrary memory write with crafted Ventana BIF file","descriptions":[{"lang":"en","value":"OpenSlide is a C library for reading whole slide image files. From 3.4.1 until 4.0.1, OpenSlide's parse_level0_xml() processing in src/openslide-vendor-ventana.c accepts nonpositive row or column tile counts from a crafted Ventana BIF file. The invalid counts produce attacker-controlled relative memory offsets and allow arbitrary values to be written at those offsets, affecting all supported platforms and configurations and resulting in a crash or potential arbitrary code execution. This issue is fixed in version 4.0.1."}],"affected":[{"vendor":"openslide","product":"openslide","versions":[{"version":">= 3.4.1, < 4.0.1","status":"affected"}]}],"references":[{"url":"https://github.com/openslide/openslide/security/advisories/GHSA-mxg2-48g7-fmwc","name":"https://github.com/openslide/openslide/security/advisories/GHSA-mxg2-48g7-fmwc","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/openslide/openslide/pull/751","name":"https://github.com/openslide/openslide/pull/751","tags":["x_refsource_MISC"]},{"url":"https://github.com/openslide/openslide/commit/2be88bd782d9fff46de8e56a99baca523e7917b3","name":"https://github.com/openslide/openslide/commit/2be88bd782d9fff46de8e56a99baca523e7917b3","tags":["x_refsource_MISC"]},{"url":"https://github.com/openslide/openslide/releases/tag/v4.0.1","name":"https://github.com/openslide/openslide/releases/tag/v4.0.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-123","lang":"en","description":"CWE-123: Write-what-where Condition","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-823","lang":"en","description":"CWE-823: Use of Out-of-range Pointer Offset","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-1284","lang":"en","description":"CWE-1284: Improper Validation of Specified Quantity in Input","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-17T20:26:21.921Z"},"source":{"advisory":"GHSA-mxg2-48g7-fmwc","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-18T20:07:02.848473Z","id":"CVE-2026-48977","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-18T20:07:13.789Z"}}]}}}