A flaw was found in BusyBox. When the TFTP (Trivial File Transfer Protocol) client requests a custom small block size and receives a standard response, it falls back to the default block size without resizing the allocated memory buffer. A malicious TFTP server can exploit this i...
Technology
Ubuntu vulnerabilities
Canonical Ubuntu and Ubuntu packages (USN). 41,388 published CVES affecting Ubuntu, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 41,388
- Critical
- 2,870
- High
- 16,166
- Medium
- 20,098
- Low
- 1,779
- Unscored
- 475
- CISA KEV
- 138
Latest Ubuntu CVEs
Newest publication first · page 3 of 40 · showing the latest 1,000
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HighCVSS 7.5 EPSS 0.45%
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MediumCVSS 5.9 EPSS 0.17%
For HTTP/1 servers, when MaxBytesReader's limit is exceeded, "Connection: close" header is automatically set without synchronization, which might race with another header being set explicitly in the server handler. As a result, an HTTP/1 server that utilizes MaxBytesReader or Max...
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HighCVSS 8.1 EPSS 0.25%
Building a malicious package that uses cgo could cause arbitrary code execution at build time through several compiler and linker flags permitted in "#cgo" directives. Specifically, "--sysroot" in GCC and Clang relocates compiler subprograms, spec files, and CRT startup objects t...
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HighCVSS 7.4 EPSS 0.28%
When using GCC, building a malicious package that uses cgo could cause arbitrary command execution at link time via untrusted GCC spec files ("specs" or ".spec"). When linking with "-fopenmp", "-fopenacc", or "-fsanitize=" in "#cgo LDFLAGS", GCC's built-in link spec evaluates "%:...
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HighCVSS 7.4 EPSS 0.25%
When using Clang or GCC, building a malicious package that uses cgo could cause unexpected code execution at build time or write files to arbitrary directories via "-gen-" or "-gnat" flags in "#cgo" directives. The "-g*" wildcard in the compiler and linker flag allowlists previou...
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CVE-2026-97036 Arbitrary code execution during build on darwin via "-l to_library" in cgo in cmd/go
PublishedHighCVSS 8.1 EPSS 0.25%On Darwin, building a malicious package that uses cgo could cause arbitrary code execution when using the Apple linker due to passing "-l to_library <path>" in a "#cgo LDFLAGS" directive. The Apple linker recombines the separated arguments "-l" and "to_library" into "-lto_library...
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HighCVSS 8.1 EPSS 0.25%
Building a malicious package that uses cgo could cause arbitrary code execution at link time by passing linker script files to the host linker via "#cgo LDFLAGS". Split "-Wl," flags that consume a following argument (such as "-Wl,-rpath", "-Wl,--just-symbols", and "-Wl,-undefined...
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CVE-2026-97038 Arbitrary code execution via crafted .syso files and cgo linker input files in cmd/go
PublishedHighCVSS 8.8 EPSS 0.25%Building a malicious package containing ".syso" files or cgo linker inputs could inject arbitrary linker flags or execute arbitrary code at link time. Linker input files—including ".syso" files, direct object or library inputs in "#cgo LDFLAGS", and libraries in "-L" directories—...
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HighCVSS 8.1 EPSS 0.23%
Building a malicious package that uses "#cgo pkg-config:" directives could load untrusted pkg-config ".pc" files or inject unvalidated compiler and linker flags. The pkg-config flag allowlist previously permitted "--with-path=" and "--personality=", allowed "--define-variable=" v...
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HighCVSS 7.1 EPSS 0.25%
Building a package containing a crafted ".syso" file could bypass cgo flag validation and inject arbitrary linker flags when linking. When loading ".syso" entries from a package archive, the linker only checked for recognized host object headers (ELF, Mach-O, PE, and XCOFF) befor...
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CVE-2026-97041 Host linker flag injection via //go:cgo_* directives in cmd/compile and cmd/link
PublishedHighCVSS 8.1 EPSS 0.23%Building a malicious package containing "//go:cgo_" compiler directives could inject arbitrary flags into the external linker invocation on ELF platforms. The compiler and linker did not reject commas in "//go:cgo_import_dynamic", "//go:cgo_export_dynamic", "//go:cgo_export_stati...
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MediumCVSS 5.3 EPSS 0.23%
Building a malicious package that uses "//go:cgo_import_dynamic" or links against a crafted PE object on Windows could pass unsafe library arguments to the external linker. The compiler only checked the first character of the library name in "//go:cgo_import_dynamic" directives a...
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HighCVSS 8.1 EPSS 0.26%
Building a malicious package that uses cgo could bypass "#cgo LDFLAGS" validation and cause unexpected code execution at build time, or cause the go command to panic, via crafted quoting in "//go:cgo_ldflag" directives. When "cmd/cgo" generates "cgo_gotypes.go", it quotes each "#...
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CVE-2026-126497 LibreCAD through 2.2.1.6 Heap Out-of-Bounds Write via dwgReader18::parseDataPage
PublishedHighCVSS 8.5 EPSS 0.17%LibreCAD through 2.2.1.6 contains a heap-based out-of-bounds write vulnerability in the bundled libdxfrw dwgReader18::parseDataPage() function due to unchecked buffer size and page offsets. Attackers can craft an AC1018 (R2004) DWG file with malicious startOffset values that caus...
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LowCVSS 3.7 EPSS 0.28%
Active Storage makes it simple to upload and reference files in cloud services and attach those files to Active Record objects. Prior to 8.0.5.2 and from 8.1 until 8.1.4.1, Active Storage's ActiveStorage::Previewer::VideoPreviewer, ActiveStorage::Analyzer::VideoAnalyzer, and Acti...
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CriticalCVSS 9.5 EPSS 1.8%
React is a JavaScript library for building user interfaces. From 19.0.0 until 19.0.9, 19.1.10, 19.2.9, and 19.3.1, the react-server-dom-webpack, react-server-dom-parcel, and react-server-dom-turbopack packages are vulnerable to unauthenticated remote code execution through crafte...
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HighCVSS 8.8 EPSS 0.51%
Active Storage makes it simple to upload and reference files in cloud services and attach those files to Active Record objects. Prior to 8.1.4.1 and 8.0.5.2, ActiveStorage::Blob#open writes a blob to a tempfile whose name carries the extension of the uploaded filename, and hands...
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MediumCVSS 5.3 EPSS 0.48%
Active Storage makes it simple to upload and reference files in cloud services and attach those files to Active Record objects. Prior to 8.1.4.1 and 8.0.5.2, ActiveStorage::Service::GCSService#url_for_direct_upload does not bind the declared content length into the signed direct-...
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MediumCVSS 4.7 EPSS 0.14%
Active Storage makes it simple to upload and reference files in cloud services and attach those files to Active Record objects. Prior to 8.1.4.1 and 8.0.5.2, when a GCS service is configured with the cache_control option, ActiveStorage::Service::GCSService#url_for_direct_upload s...
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HighCVSS 7.4 EPSS 0.36%
Action Pack is a framework for handling and responding to web requests. From 8.1 until 8.1.4.1, Since Rails 8.1.0, ActionDispatch::RemoteIp derives request.remote_ip from Rack::Request#forwarded_for, which under Rack 3 reads the RFC 7239 Forwarded header in preference to X-Forwar...
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HighCVSS 7.5 EPSS 0.63%
Action Pack is a framework for handling and responding to web requests. Prior to 8.1.4.1 and 8.0.5.2, ActionController::Parameters#each_key delegates to the internal ActiveSupport::HashWithIndifferentAccess that holds the request parameters, so when called with a block it returns...
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CVE-2026-126080 Active Support: Possible DoS vulnerability in Active Support safe_constantize
PublishedHighCVSS 7.5 EPSS 0.83%Active Support is a collection of utility classes and standard library extensions used by Rails and other Ruby projects. Prior to 8.1.4.1 and 8.0.5.2, when constant lookup raises LoadError, ActiveSupport::Inflector#safe_constantize (and String#safe_constantize) builds a regular e...
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MediumCVSS 6.1 EPSS 0.34%
Action View is a framework for handling view template lookup and rendering and provides view helpers for building HTML. Prior to 8.1.4.1 and 8.0.5.2, with the HTML5 sanitizer (Rails::HTML5::Sanitizer, the default vendor on CRuby for applications using load_defaults 7.1 or later),...
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MediumCVSS 6.1 EPSS 0.34%
Action View is a framework for handling view template lookup and rendering and provides view helpers for building HTML. Prior to 8.1.4.1 and 8.0.5.2, ActionView::Helpers::TextHelper#highlight substitutes each matched phrase into the :highlighter string without escaping it and ret...
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MediumCVSS 6.8 EPSS 0.42%
Action Pack is a framework for handling and responding to web requests. Prior to 8.1.4.1 and 8.0.5.2, When ActionDispatch::Cookies reads a signed or encrypted cookie that was written under a rotated secret (config.action_dispatch.cookies_rotations) or in the format that a :hybrid...
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.