Ruby vulnerabilities
35 CVEs and advisories name Ruby as an affected vendor, newest first. Follow it as a feed.
- CVE-2026-80213An issue was discovered in the resolv gem before 0.7.2 for Ruby.
- CVE-2026-80212An issue was discovered in the resolv gem before 0.7.2 for Ruby.
- CVE-2026-71847Ruby JSON: JSON::ResumableParser#partial_value dereferences a freed input buffer and crashes on truncated duplicate-key streams
- CVE-2026-54696Ruby JSON: JSON generator heap buffer overflow when streaming to an IO
- CVE-2026-47242Net::IMAP: Command Injection via ID command argument
- CVE-2026-47240Net::IMAP: Command Injection via non-synchronizing literal in "raw" argument
- CVE-2026-47241Net::IMAP: Denial of Service via incomplete raw argument validation
- CVE-2026-42258net-imap: Command Injection via unvalidated Symbol inputs
- CVE-2026-42257net-imap: Command Injection via "raw" arguments to multiple commands
- CVE-2026-42256net-imap: Denial of service via high iteration count for `SCRAM-*` authentication
- CVE-2026-42245net-imap: Quadratic complexity when reading response literals
- CVE-2026-42246net-imap vulnerable to STARTTLS stripping via invalid response timing
- CVE-2026-41316ERB has an @_init deserialization guard bypass via def_module / def_method / def_class
- CVE-2026-27820zlib: Buffer Overflow in Zlib::GzipReader ungetc via large input leads to memory corruption
- CVE-2026-33210Ruby JSON has a format string injection vulnerability
- CVE-2025-61594URI Credential Leakage Bypass over CVE-2025-27221
- CVE-2025-58767REXML has a DoS condition when parsing malformed XML file
- CVE-2025-24294The attack vector is a potential Denial of Service (DoS).
- CVE-2025-6442Ruby WEBrick read_header HTTP Request Smuggling Vulnerability
- CVE-2025-43857net-imap rubygem vulnerable to possible DoS by memory exhaustion
- CVE-2025-27788Ruby JSON Parser has Out-of-bounds Read
- CVE-2025-25186Net::IMAP vulnerable to possible DoS by memory exhaustion
- CVE-2024-49761REXML ReDoS vulnerability
- CVE-2024-43398REXML denial of service vulnerability
- CVE-2024-41946REXML DoS vulnerability
- CVE-2024-41123REXML DoS vulnerability
- CVE-2024-39908Denial of service in REXML
- CVE-2024-35176REXML contains a denial of service vulnerability
- CVE-2015-1855verify_certificate_identity in the OpenSSL extension in Ruby before 2.0.0 patchlevel 645, 2.1.x before 2.1.6, and 2.2.x before 2.2.2 does no
- CVE-2011-3624Various methods in WEBrick::HTTPRequest in Ruby 1.9.2 and 1.8.7 and earlier do not validate the X-Forwarded-For, X-Forwarded-Host and X-Forw