CVE-2026-93749 source-map-js through 1.2.1 Event Loop Denial of Service

source-map-js through 1.2.1 fails to validate the per-section offset line value in indexed source maps, allowing attackers to specify arbitrary numeric values. Attackers can supply extremely large offset line values that cause synchronous event loop blocking for extended periods, preventing the...

CVE-2026-93749 source-map-js through 1.2.1 Event Loop Denial of Service

source-map-js through 1.2.1 fails to validate the per-section offset line value in indexed source maps, allowing attackers to specify arbitrary numeric values. Attackers can supply extremely large offset line values that cause synchronous event loop blocking for extended periods, preventing the...

EUVD-2026-83254

source-map-js through 1.2.1 fails to validate the per-section offset line value in indexed source maps, allowing attackers to specify arbitrary numeric values. Attackers can supply extremely large offset line values that cause synchronous event loop blocking for extended periods, preventing the...

CVE-2026-93749 source-map-js through 1.2.1 Event Loop Denial of Service

source-map-js through 1.2.1 fails to validate the per-section offset line value in indexed source maps, allowing attackers to specify arbitrary numeric values. Attackers can supply extremely large offset line values that cause synchronous event loop blocking for extended periods, preventing the...

CVE-2026-93749

source-map-js (through 1.2.1 ) fails to validate the per-section offset line value in indexed source maps, allowing a remote, unauthenticated attacker to supply an extremely large offset line value. This triggers synchronous event loop blocking for extended periods, preventing the service from ha...

CVE-2026-69184 c-ares: CPU-exhaustion denial of service via unbounded DNS name compression pointer chains

c-ares is an asynchronous resolver library. Prior to 1.34.7, aresdnsnameparse enforces backward DNS compression pointers but does not bound the total pointer hops or assembled name length. A malicious DNS server can send a response containing a long descending pointer chain and many resource...

CVE-2026-69184 c-ares: CPU-exhaustion denial of service via unbounded DNS name compression pointer chains

c-ares is an asynchronous resolver library. Prior to 1.34.7, aresdnsnameparse enforces backward DNS compression pointers but does not bound the total pointer hops or assembled name length. A malicious DNS server can send a response containing a long descending pointer chain and many resource...

CVE-2026-69184: Inefficient Algorithmic Complexity

c-ares is an asynchronous resolver library. Prior to 1.34.7, aresdnsnameparse enforces backward DNS compression pointers but does not bound the total pointer hops or assembled name length. A malicious DNS server can send a response containing a long descending pointer chain and many resource...

PT-2026-95589

Name of the Vulnerable Software and Affected Versions source-map-js versions 1.2.1 and earlier Description The software fails to validate the per-section offset line value in indexed source maps. An attacker can provide arbitrary and extremely large numeric values for these offsets, which leads t...

CVE-2026-93749: Improper Validation of Specified Quantity in Input

source-map-js through 1.2.1 fails to validate the per-section offset line value in indexed source maps, allowing attackers to specify arbitrary numeric values. Attackers can supply extremely large offset line values that cause synchronous event loop blocking for extended periods, preventing the...

CVE-2026-93749: Improper Validation of Specified Quantity in Input

source-map-js through 1.2.1 fails to validate the per-section offset line value in indexed source maps, allowing attackers to specify arbitrary numeric values. Attackers can supply extremely large offset line values that cause synchronous event loop blocking for extended periods, preventing the...

PT-2026-99965

uri-js through 4.4.1 contains a denial of service vulnerability in the removeDotSegments function that loops infinitely when a path segment begins with Unicode line or paragraph separators. Attackers can trigger this by calling removeDotSegments directly or through normalize/resolve functions wit...

Denial of Service (DoS)

Overview vm2 is a sandbox that can run untrusted code with whitelisted Node's built-in modules. Affected versions of this package are vulnerable to Denial of Service DoS through the FinalizationRegistry process. An attacker can cause the host event loop to be blocked for an unbounded period by...

GHSA-VJCV-9J33-WJ62 Duplicate Advisory: vm2: timeout Option Bypass via FinalizationRegistry Cleanup Callback (Unbounded Host Event-Loop Block)

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-r4fx-v8hh-22mv. This link is maintained to preserve external references. Original Description vm2 before 3.11.7 affected versions = 3.11.6 does not enforce the VM timeout option on code executed outside the...

Duplicate Advisory: vm2: timeout Option Bypass via FinalizationRegistry Cleanup Callback (Unbounded Host Event-Loop Block)

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-r4fx-v8hh-22mv. This link is maintained to preserve external references. Original Description vm2 before 3.11.7 affected versions = 3.11.6 does not enforce the VM timeout option on code executed outside the...

EUVD-2026-81688

libp2p is a JavaScript implementation of the libp2p networking stack. Prior to 11.0.26, @libp2p/floodsub accepts unauthenticated RPC frames on /floodsub/1.0.0 through PeerStreams.attachInboundStream in packages/floodsub/src/peer-streams.ts without protobuf element limits, then processRpc and...

GHSA-RW4J-R22C-9GC3 AsyncSSH: asyncio event-loop freeze via SSH maximum packet size = 0 in SSH_MSG_CHANNEL_OPEN / OPEN_CONFIRMATION

Summary A malicious SSH server can wedge an AsyncSSH client, and an authenticated client can wedge an AsyncSSH server, by sending a channel maximum packet size of 0 in SSHMSGCHANNELOPENCONFIRMATION server→client or SSHMSGCHANNELOPEN client→server. AsyncSSH stores the peer-supplied value verbatim...

AsyncSSH: asyncio event-loop freeze via SSH maximum packet size = 0 in SSH_MSG_CHANNEL_OPEN / OPEN_CONFIRMATION

Summary A malicious SSH server can wedge an AsyncSSH client, and an authenticated client can wedge an AsyncSSH server, by sending a channel maximum packet size of 0 in SSHMSGCHANNELOPENCONFIRMATION server→client or SSHMSGCHANNELOPEN client→server. AsyncSSH stores the peer-supplied value verbatim...

CVE-2026-92596

A flaw was found in Nodemailer's addressparser component. This vulnerability, due to quadratic time complexity, allows a remote attacker to cause a Denial of Service DoS. By sending a specially crafted email with a large, comma-separated list of addresses, the attacker can block the Node.js event...

unbound: Unbound: Denial of Service via continuous queries on TCP/DoT connection

A flaw was found in Unbound. A malicious actor can exploit a vulnerability in the TCP/DoT reading procedure, which lacks a limit on consecutive reads. By continuously streaming distinct uncached names over a TCP/DoT connection, an attacker can monopolize a worker's event loop. This can lead to a...