gopls by default communicates via pipe. However, -port and -listen flags are supported as means of debugging. If -listen is given a value without an explicit host (e.g. :8080), or -port is used, gopls will listen on 0.0.0.0.  As a result, users might inadvertently cause gopls to bind 0.0.0.0. This can allow a malicious party on the same network to execute code arbitrarily via gopls.

gopls by default communicates via pipe. However, -port and -listen flags are supported as means of debugging. If -listen is given a value without an explicit host (e.g. :8080), or -port is used, gopls will listen on 0.0.0.0.  As a result, users might inadvertently cause gopls to bind 0.0.0.0. This can allow a malicious party on the same network to execute code arbitrarily via gopls.

os: os: Information disclosure via path traversal using specially crafted filenames net/http: CrossOriginProtection bypass in net/http golang.org/x/net/html: Quadratic parsing complexity in golang.org/x/net/html net/url: Insufficient validation of bracketed IPv6 hostnames in net/url golang.org/x/crypto/ssh/agent: SSH Agent servers: Denial of Service due to malformed messages golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via unbounded memory consumption in GSSAPI authentication golang: archive/tar: Unbounded allocation when parsing GNU sparse map encoding/asn1: Parsing DER payload can cause memory exhaustion in encoding/asn1 golang.org/net/http: Lack of limit when parsing cookies can cause memory exhaustion in net/http crypto/x509: Quadratic complexity when checking name constraints in crypto/x509 crypto/x509: golang: Panic when validating certificates with DSA public keys in crypto/x509 crypto/tls: go crypto/tls ALPN negotiation error contains attacker controlled information golang.org/x/net/html: Infinite parsing loop in golang.org/x/net encoding/pem: Quadratic complexity when parsing some invalid inputs in encoding/pem net/textproto: Excessive CPU consumption in Reader.ReadResponse in net/textproto net/mail: Excessive CPU consumption in ParseAddress in net/mail golang: net/url: Memory exhaustion in query parameter parsing in net/url golang: crypto/x509: excluded subdomain constraint does not restrict wildcard SANs golang: archive/zip: Excessive CPU co…

Affected: Ubuntu:25.10: gopls, Ubuntu:26.04:LTS: gopls

gopls by default communicates via pipe. However, -port and -listen flags are supported as means of debugging. If -listen is given a value without an explicit host (e.g. :8080), or -port is used, gopls will listen on 0.0.0.0. As a result, users might inadvertently cause gopls to bind 0.0.0.0. This can allow a malicious party on the same network to execute code arbitrarily via gopls.