Inefficient Algorithmic Complexity

Overview Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in AsyncParser in parser/shared/src/main/scala/jawn/AsyncParser.scala. An attacker can exhaust CPU by sending untrusted JSON tokens split across many tiny chunks so each absorb call rescans the same...

GHSA-W4CM-GVHJ-CGW6 Jawn: Quadratic parsing effort in AsyncParser

AsyncParser can be forced to perform On^2 work on the length of the input. When a single JSON token arrives across many small chunks, each absorb call rescans the incomplete token from the start. Impact Denial of service via CPU exhaustion when parsing untrusted JSON. Preconditions: - Application...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the Parser and AsyncParser recursive JSON parsing paths in parser/shared/src/main/scala/jawn/Parser.scala and parser/shared/src/main/scala/jawn/AsyncParser.scala. An attacker...

GHSA-CC4V-RVGP-2PF3 Jawn: Uncontrolled nesting depth in JSON parser

The Jawn parser before 1.6.1 is vulnerable to a denial of service attack via untrusted input. Impact A remote attacker who can submit JSON to any jawn-backed parse method can exhaust JVM heap and trigger java.lang.OutOfMemoryError. This is treated by Scala as a fatal error and not typically handl...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the Parser and AsyncParser recursive JSON parsing paths in parser/shared/src/main/scala/jawn/Parser.scala and parser/shared/src/main/scala/jawn/AsyncParser.scala. An attacker...

Jawn: Uncontrolled nesting depth in JSON parser

The Jawn parser before 1.6.1 is vulnerable to a denial of service attack via untrusted input. Impact A remote attacker who can submit JSON to any jawn-backed parse method can exhaust JVM heap and trigger java.lang.OutOfMemoryError. This is treated by Scala as a fatal error and not typically handl...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the Parser and AsyncParser recursive JSON parsing paths in parser/shared/src/main/scala/jawn/Parser.scala and parser/shared/src/main/scala/jawn/AsyncParser.scala. An attacker...

CVE-2026-82409

Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, indexer/common.go serializedDataForUpdateAccounts places the attacker-controlled acc.Name value into an Elasticsearch bulk JSON and NDJSON request without escaping it. The SetAccountName transaction accepts val...

EUVD-2026-85647

Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, indexer/common.go serializedDataForUpdateAccounts places the attacker-controlled acc.Name value into an Elasticsearch bulk JSON and NDJSON request without escaping it. The SetAccountName transaction accepts val...

CVE-2026-82409

Prior to version 1.7.20 , the Klever-Go blockchain implementation is vulnerable to Elasticsearch bulk / painless injection due to improper escaping of the acc.Name value in indexer/common.go. Because the SetAccountName transaction accepts raw UTF-8 characters including quotes, backslashes, and ne...

DEBIAN-CVE-2026-59990

Jawn is an open source JSON parser. Prior to 1.7.0, Jawn parse methods accept arbitrarily deep JSON array and object nesting without a depth limit, allowing a remote attacker who can submit untrusted JSON to grow parser contexts until the JVM heap is exhausted. The resulting...

CVE-2026-59990

Jawn is an open source JSON parser. Prior to 1.7.0, Jawn parse methods accept arbitrarily deep JSON array and object nesting without a depth limit, allowing a remote attacker who can submit untrusted JSON to grow parser contexts until the JVM heap is exhausted. The resulting...

CVE-2026-61814

Jawn is an open source JSON parser. Prior to 1.7.0, Jawn's AsyncParser can perform quadratic work when a single JSON token is delivered across many small chunks because each absorb call rescans the incomplete token from the start. A remote attacker who controls untrusted JSON input and its chunk...

DEBIAN-CVE-2026-61814

Jawn is an open source JSON parser. Prior to 1.7.0, Jawn's AsyncParser can perform quadratic work when a single JSON token is delivered across many small chunks because each absorb call rescans the incomplete token from the start. A remote attacker who controls untrusted JSON input and its chunk...

UBUNTU-CVE-2026-59990

Jawn is an open source JSON parser. Prior to 1.7.0, Jawn parse methods accept arbitrarily deep JSON array and object nesting without a depth limit, allowing a remote attacker who can submit untrusted JSON to grow parser contexts until the JVM heap is exhausted. The resulting...

CVE-2026-59990

Jawn is an open source JSON parser. Prior to 1.7.0, Jawn parse methods accept arbitrarily deep JSON array and object nesting without a depth limit, allowing a remote attacker who can submit untrusted JSON to grow parser contexts until the JVM heap is exhausted. The resulting...

CVE-2026-61814

Jawn is an open source JSON parser. Prior to 1.7.0, Jawn's AsyncParser can perform quadratic work when a single JSON token is delivered across many small chunks because each absorb call rescans the incomplete token from the start. A remote attacker who controls untrusted JSON input and its chunk...

CVE-2026-59990 Jawn: Uncontrolled nesting depth in JSON parser

Jawn is an open source JSON parser. Prior to 1.7.0, Jawn parse methods accept arbitrarily deep JSON array and object nesting without a depth limit, allowing a remote attacker who can submit untrusted JSON to grow parser contexts until the JVM heap is exhausted. The resulting...

EUVD-2026-85554

Jawn is an open source JSON parser. Prior to 1.7.0, Jawn parse methods accept arbitrarily deep JSON array and object nesting without a depth limit, allowing a remote attacker who can submit untrusted JSON to grow parser contexts until the JVM heap is exhausted. The resulting...

CVE-2026-59990

The open-source JSON parser Jawn is vulnerable to a denial of service attack due to uncontrolled nesting depth in JSON arrays and objects. An attacker can submit untrusted JSON to grow parser contexts until the JVM heap is exhausted , triggering a java.lang.OutOfMemoryError that is not handled by...