GHSA-8VH3-G2QG-2H2C nextcloud-mcp-server: Unauthenticated `POST /webhooks/nextcloud` allows arbitrary vector data deletion when `WEBHOOK_SECRET` is unset ( default )

Summary The POST /webhooks/nextcloud endpoint has no authentication by default: WEBHOOKSECRET defaults to None and is never required by startup validation. When unset, the receiver accepts any unauthenticated POST. The userid is taken directly from the attacker-supplied payload and passed to...

GHSA-8CP3-QXJ6-PX34 utcp-http has an OAuth2 `tokenUrl` Trust Boundary Bypass in OpenAPI Conversion

Summary The utcp-http library = 1.1.3 unconditionally trusts the tokenUrl field embedded in remote OpenAPI security schemes. When a victim registers an attacker-controlled OpenAPI spec and invokes any generated OAuth2-protected tool, the library POSTs the victim's clientid and clientsecret to the...

utcp-http has an OAuth2 `tokenUrl` Trust Boundary Bypass in OpenAPI Conversion

Summary The utcp-http library = 1.1.3 unconditionally trusts the tokenUrl field embedded in remote OpenAPI security schemes. When a victim registers an attacker-controlled OpenAPI spec and invokes any generated OAuth2-protected tool, the library POSTs the victim's clientid and clientsecret to the...

GHSA-F5PJ-2738-996M mcp-shell — Security Disabled by Default in Bare-Binary Deploy Path + Shell Interpreter in Secure-Mode Allowlist

mcp-shell at commit 17ac0eef5c9a5a42b8fb132d3d034973d55a5433 has two issues that together mean neither the default deploy path nor the recommended "secure mode" delivers the restriction they're marketed as providing. Filing these together because the two failure modes bracket the full intended...

mcp-shell — Security Disabled by Default in Bare-Binary Deploy Path + Shell Interpreter in Secure-Mode Allowlist

mcp-shell at commit 17ac0eef5c9a5a42b8fb132d3d034973d55a5433 has two issues that together mean neither the default deploy path nor the recommended "secure mode" delivers the restriction they're marketed as providing. Filing these together because the two failure modes bracket the full intended...

curl: Unbound cross-peer HTTP Digest challenge state

Summary When libcurl parses an HTTP Digest WWW-Authenticate challenge, it stores the realm, nonce, algorithm, and qop into the easy handle's state.digest — but does not bind that state to the peer that sent it. If the challenge is parsed but never used for output e.g. because Basic or Bearer was...

binary-exploitation-writeups

Binary Exploitation Writeups A comprehensive collection of bi...

CVE-2026-55371

A flaw was found in OpenEXR. A vulnerability in the exrattrsetbytes function allows an attacker to trigger a NULL pointer dereference by providing a positive hintlength with a NULL typehint. This can lead to a deterministic crash, resulting in a denial of service DoS, which makes the affected...

CVE-2026-55059

A flaw was found in OpenEXR, a widely used library for the EXR image format. A user processing a specially crafted image file could trigger a heap out-of-bounds write vulnerability in the SampleCountChannel::set function. This occurs due to an incorrect computation of the target Y coordinate,...

GHSA-MW6R-2HVM-4RP2 qwed-mcp has Unsafe SymPy `parse_expr()` Remote Code Execution via Unsanitized Math Expression Input

Summary verifymathexpression in qwed-mcp v0.2.0 passes attacker-controlled strings directly to SymPy's parseexpr without restricting globaldict or validating the expression's AST. Because parseexpr internally calls eval and Python automatically injects the current module's builtins when no explic...

qwed-mcp has Unsafe SymPy `parse_expr()` Remote Code Execution via Unsanitized Math Expression Input

Summary verifymathexpression in qwed-mcp v0.2.0 passes attacker-controlled strings directly to SymPy's parseexpr without restricting globaldict or validating the expression's AST. Because parseexpr internally calls eval and Python automatically injects the current module's builtins when no explic...

EUVD-2026-65547

QWED-MCP is a deterministic verification gateway for MCP. Prior to 0.2.1, verifymathexpression in src/qwedmcp/engines/mathengine.py passes attacker-controlled expression and claimedresult strings directly to SymPy's parseexpr after only normalizing caret syntax to Python exponent syntax, without...

CVE-2026-55546 QWED-MCP: Unsafe SymPy `parse_expr()` Remote Code Execution via Unsanitized Math Expression Input

QWED-MCP is a deterministic verification gateway for MCP. Prior to 0.2.1, verifymathexpression in src/qwedmcp/engines/mathengine.py passes attacker-controlled expression and claimedresult strings directly to SymPy's parseexpr after only normalizing caret syntax to Python exponent syntax, without...

CVE-2026-55546 QWED-MCP: Unsafe SymPy `parse_expr()` Remote Code Execution via Unsanitized Math Expression Input

QWED-MCP is a deterministic verification gateway for MCP. Prior to 0.2.1, verifymathexpression in src/qwedmcp/engines/mathengine.py passes attacker-controlled expression and claimedresult strings directly to SymPy's parseexpr after only normalizing caret syntax to Python exponent syntax, without...

CVE-2026-55546

QWED-MCP (a deterministic verification gateway for MCP) is affected by a Critical (CVSS 9.8) remote code execution vulnerability in verify_math_expression() within src/qwed_mcp/engines/math_engine.py. Attacker-controlled expression strings are passed directly to SymPy's parse_expr() without restr...

CVE-2026-55546 QWED-MCP: Unsafe SymPy `parse_expr()` Remote Code Execution via Unsanitized Math Expression Input

QWED-MCP is a deterministic verification gateway for MCP. Prior to 0.2.1, verifymathexpression in src/qwedmcp/engines/mathengine.py passes attacker-controlled expression and claimedresult strings directly to SymPy's parseexpr after only normalizing caret syntax to Python exponent syntax, without...

kernel: crypto: ccp - copy IV using skcipher ivsize

A flaw was found in the Linux kernel's cryptographic coprocessor CCP driver. When processing AFALG rfc3686-ctr-aes-ccp requests, the ccpaescomplete function attempts to restore more data than the allocated buffer for the Initialization Vector IV can hold. This leads to a buffer overrun, which can...

CVE-2026-79675

NLTK before 3.10.3 fails to validate JVM options passed through the per-call options parameter in the java() function. Attackers can inject dangerous JVM flags such as -agentpath , -javaagent , or @argfile into Stanford wrapper classes, achieving arbitrary code execution . The vulnerability is ra...

CVE-2026-79675

NLTK before 3.10.3 fails to validate JVM options passed through the per-call options parameter in the java function, allowing attackers to inject dangerous JVM flags. Attackers can supply malicious options like -agentpath, -javaagent, or @argfile to Stanford wrapper classes to achieve arbitrary...

CVE-2026-79675 NLTK before 3.10.3 JVM Argument Injection via Per-Call Options

NLTK before 3.10.3 fails to validate JVM options passed through the per-call options parameter in the java function, allowing attackers to inject dangerous JVM flags. Attackers can supply malicious options like -agentpath, -javaagent, or @argfile to Stanford wrapper classes to achieve arbitrary...