CVE-2026-42462 Fedify has an LD-Signature Bypass via JSON-LD Named-Graph Restructuring

Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to versions 1.9.11, 1.10.10, 2.0.18, 2.1.14, and 2.2.3, an attacker can make use of JSON-LD features to restructure a JSON-LD document that would change how Fedify interprets it without changing its...

CVE-2026-42462

CVE-2026-42462 describes an LD-Signature bypass in Fedify caused by JSON-LD named-graph restructuring. The issue allows an attacker to reorganize a signed JSON-LD payload (via features like @graph, @reverse, @included) in a way that changes how the signed ActivityPub activity is interpreted witho...

GHSA-9RFG-V8G9-9367 Fedify has an LD-Signature Bypass via JSON-LD Named-Graph Restructuring

As told on Discord earlier, multiple projects are affected, and we would like to coordinate. For now, we are aiming at a May 6th release date, but this is not set in stone yet. Summary An attacker can make use of JSON-LD features to restructure a JSON-LD document that would change how Fedify...

Microsoft Excel File Named Graph Record Parsing Stack Overflow (MS07-023; CVE-2007-0215)

Microsoft Excel is a popular spreadsheet application that is usually released as part of the Microsoft Office suite. The application can create complex spreadsheets with multiple workbooks, formulae, and various data sources. The proprietary file format used for storing Microsoft Excel documents ...

Microsoft Excel Named Graph record buffer overflow

Added: 05/24/2007 CVE: CVE-2007-0215 BID: 23760 OSVDB: 34393 Background Microsoft Excel, part of the Microsoft Office product suite, is a spreadsheet application for Windows platforms. Problem A buffer overflow vulnerability in Microsoft Excel allows command execution when a user opens a speciall...

Microsoft Excel Named Graph record buffer overflow

Added: 05/24/2007 CVE: CVE-2007-0215 BID: 23760 OSVDB: 34393 Background Microsoft Excel, part of the Microsoft Office product suite, is a spreadsheet application for Windows platforms. Problem A buffer overflow vulnerability in Microsoft Excel allows command execution when a user opens a speciall...

Microsoft Excel Named Graph record buffer overflow

Added: 05/24/2007 CVE: CVE-2007-0215 BID: 23760 OSVDB: 34393 Background Microsoft Excel, part of the Microsoft Office product suite, is a spreadsheet application for Windows platforms. Problem A buffer overflow vulnerability in Microsoft Excel allows command execution when a user opens a speciall...

Microsoft Excel Named Graph record buffer overflow

Added: 05/24/2007 CVE: CVE-2007-0215 BID: 23760 OSVDB: 34393 Background Microsoft Excel, part of the Microsoft Office product suite, is a spreadsheet application for Windows platforms. Problem A buffer overflow vulnerability in Microsoft Excel allows command execution when a user opens a speciall...

Microsoft Excel BIFF记录远程栈溢出漏洞（MS07-023）

Microsoft Excel是Office套件中的电子表格工具。 Excel在解析BIFF文件格式时存在栈溢出漏洞，在处理畸形的Named Graph记录时可能未经检查便将用户提供的数据拷贝到了栈中，触发这个溢出，导致在用户系统上执行任意指令。 Microsoft Excel Viewer 2003 Microsoft Excel 2003 SP2 Microsoft Excel 2002 SP3 Microsoft Excel 2000 SP3 临时解决方法： 不要打开不可信任来源的Excel文档。 厂商补丁： Microsoft ---------...

Stack overflow

Stack-based buffer overflow in Microsoft Excel 2000 SP3, 2002 SP3, 2003 SP2, and 2003 Viewer allows user-assisted remote attackers to execute arbitrary code via a .XLS BIFF file with a malformed Named Graph record, which results in memory corruption...

Microsoft Excel BIFF File Format Named Graph Record Parsing Stack Overflow Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Office Excel. Exploitation requires that the attacker coerce the target into opening a malicious .XLS file. The specific flaw exists within the parsing of the BIFF file format used by...