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Ruby — Vulnerabilities & Security Advisories 33

Browse all 33 CVE security advisories affecting Ruby. AI-powered Chinese analysis, POCs, and references for each vulnerability.

Ruby is a dynamic, open-source programming language primarily utilized for web application development, scripting, and system administration tasks. Its widespread adoption in frameworks like Ruby on Rails has historically exposed it to common vulnerability classes, including Remote Code Execution (RCE), Cross-Site Scripting (XSS), and SQL injection, often stemming from unsafe deserialization or improper input validation. While the language itself is robust, security incidents frequently arise from misconfigured environments or outdated dependencies rather than core language flaws. Notable concerns involve the potential for arbitrary code execution through crafted objects, particularly in legacy versions lacking modern security patches. With 23 CVEs currently on record, developers must prioritize rigorous code auditing and dependency management to mitigate risks associated with privilege escalation and data exposure, ensuring that the flexibility of Ruby does not compromise application integrity.

CVE ID Title CVSS Severity Published
CVE-2026-71847 Ruby JSON: JSON::ResumableParser#partial_value dereferences a freed input buffer and crashes on truncated duplicate-key streams — json CWE-416 8.7 High 2026-08-07
CVE-2026-54696 Ruby JSON: JSON generator heap buffer overflow when streaming to an IO — json CWE-122 3.7 Low 2026-06-30
CVE-2026-47242 Net::IMAP: Command Injection via ID command argument — net-imap CWE-77 - - 2026-06-22
CVE-2026-47240 Net::IMAP: Command Injection via non-synchronizing literal in "raw" argument — net-imap CWE-77 - - 2026-06-22
CVE-2026-47241 Net::IMAP: Denial of Service via incomplete raw argument validation — net-imap CWE-162 - - 2026-06-22
CVE-2026-42258 net-imap: Command Injection via unvalidated Symbol inputs — net-imap CWE-77 5.8 Medium 2026-05-09
CVE-2026-42257 net-imap: Command Injection via "raw" arguments to multiple commands — net-imap CWE-93 6.5 - 2026-05-09
CVE-2026-42256 net-imap: Denial of service via high iteration count for `SCRAM-*` authentication — net-imap CWE-1322 6.5 - 2026-05-09
CVE-2026-42245 net-imap: Quadratic complexity when reading response literals — net-imap CWE-407 7.5 - 2026-05-09
CVE-2026-42246 net-imap vulnerable to STARTTLS stripping via invalid response timing — net-imap CWE-392 7.6 High 2026-05-09
CVE-2026-41316 ERB has an @_init deserialization guard bypass via def_module / def_method / def_class — erb CWE-693 8.1 High 2026-04-24
CVE-2026-27820 zlib: Buffer Overflow in Zlib::GzipReader ungetc via large input leads to memory corruption — zlib CWE-120 9.8 - 2026-04-16
CVE-2026-33210 Ruby JSON has a format string injection vulnerability — json CWE-134 8.3 High 2026-03-20
CVE-2025-61594 URI Credential Leakage Bypass over CVE-2025-27221 — uri CWE-200 7.5 - 2025-12-30
CVE-2025-58767 REXML has a DoS condition when parsing malformed XML file — rexml CWE-400 7.5AI High AI 2025-09-17
CVE-2025-24294 Ruby 安全漏洞 — resolv 7.5AI High AI 2025-07-12
CVE-2025-6442 Ruby WEBrick read_header HTTP Request Smuggling Vulnerability — WEBrick CWE-444 5.9AI Medium AI 2025-06-25
CVE-2025-43857 net-imap rubygem vulnerable to possible DoS by memory exhaustion — net-imap CWE-400 7.5AI High AI 2025-04-28
CVE-2025-27788 Ruby JSON Parser has Out-of-bounds Read — json CWE-125 7.5 High 2025-03-12
CVE-2025-25186 Net::IMAP vulnerable to possible DoS by memory exhaustion — net-imap CWE-400 6.5 Medium 2025-02-10
CVE-2024-49761 REXML ReDoS vulnerability — rexml CWE-1333 7.5 - 2024-10-28
CVE-2024-43398 REXML denial of service vulnerability — rexml CWE-776 5.9 Medium 2024-08-22
CVE-2024-41946 REXML DoS vulnerability — rexml CWE-400 5.3 Medium 2024-08-01
CVE-2024-41123 REXML DoS vulnerability — rexml CWE-400 5.3 Medium 2024-08-01
CVE-2024-39908 Denial of service in REXML — rexml CWE-400 4.3 Medium 2024-07-16
CVE-2024-35176 REXML contains a denial of service vulnerability — rexml CWE-400 5.3 Medium 2024-05-16
CVE-2015-1855 Ruby OpenSSL extension 输入验证错误漏洞 — Ruby 5.9 - 2019-11-29
CVE-2011-3624 Ruby 注入漏洞 — Ruby 5.3 - 2019-11-26
CVE-2013-6461 Nokogiri 安全漏洞 — Nokogiri gem 6.5 - 2019-11-05
CVE-2013-6460 Nokogiri 安全漏洞 — Nokogiri gem 7.5 - 2019-11-05

This page lists every published CVE security advisory associated with Ruby. Each entry links to a detailed page with CVSS scoring, CWE classification, affected products and references. AI-generated Chinese analysis is provided for fast triage.