GHSA-X2Q3-8CJH-766F Excelize: extractPart allocates attacker-controlled, unbounded and negative-sized buffers from CFB directory entries: remote panic / OOM DoS

Summary extractPart allocates directly from the mscfb directory-entry size with no clamping crypt.go:198, same missing bound at crypt.go:204: go buf := makebyte, entry.Size entry.Size is the raw streamSize field from the attacker-controlled CFB directory entry mscfb v1.0.8 fixFile, file.go:109-12...

EUVD-2026-94533

Excelize: extractPart allocates attacker-controlled, unbounded and negative-sized buffers from CFB directory entries: remote panic / OOM DoS...

Excelize: extractPart allocates attacker-controlled, unbounded and negative-sized buffers from CFB directory entries: remote panic / OOM DoS

Summary extractPart allocates directly from the mscfb directory-entry size with no clamping crypt.go:198, same missing bound at crypt.go:204: go buf := makebyte, entry.Size entry.Size is the raw streamSize field from the attacker-controlled CFB directory entry mscfb v1.0.8 fixFile, file.go:109-12...

CVE-2026-107215

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.3.1 to 2.11.0, extractPart allocates a byte slice directly from an attacker-controlled CFB directory-entry size before validating the sector chain or size domain. extractPart trusts the CFB directory...

CVE-2026-107215

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.3.1 to 2.11.0, extractPart allocates a byte slice directly from an attacker-controlled CFB directory-entry size before validating the sector chain or size domain. extractPart trusts the CFB directory...

CVE-2026-107215

The Excelize Go library (versions 2.3.1 to 2.11.0 ) is vulnerable to a remote panic or Out-of-Memory (OOM) Denial of Service due to improper validation of CFB directory-entry sizes. The extractPart function trusts the streamSize for EncryptionInfo and EncryptedPackage allocations before validatin...

CVE-2026-107215 Excelize: extractPart allocates attacker-controlled, unbounded and negative-sized buffers from CFB directory entries: remote panic / OOM DoS

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.3.1 to 2.11.0, extractPart allocates a byte slice directly from an attacker-controlled CFB directory-entry size before validating the sector chain or size domain. extractPart trusts the CFB directory...

CVE-2026-107215 Excelize: extractPart allocates attacker-controlled, unbounded and negative-sized buffers from CFB directory entries: remote panic / OOM DoS

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.3.1 to 2.11.0, extractPart allocates a byte slice directly from an attacker-controlled CFB directory-entry size before validating the sector chain or size domain. extractPart trusts the CFB directory...

CVE-2026-107215 Excelize: extractPart allocates attacker-controlled, unbounded and negative-sized buffers from CFB directory entries: remote panic / OOM DoS

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.3.1 to 2.11.0, extractPart allocates a byte slice directly from an attacker-controlled CFB directory-entry size before validating the sector chain or size domain. extractPart trusts the CFB directory...

CVE-2026-107215: Memory Allocation with Excessive Size Value

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.3.1 to 2.11.0, extractPart allocates a byte slice directly from an attacker-controlled CFB directory-entry size before validating the sector chain or size domain. extractPart trusts the CFB directory...

PT-2026-107646

Name of the Vulnerable Software and Affected Versions Excelize versions 2.3.1 through 2.11.0 Description The extractPart function allocates a byte slice using a CFB directory-entry size provided by the user before validating the sector chain or size domain. Specifically, the function trusts the...