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python-pip vulnerabilities

Vulnerabilities published for python-pip in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerabilities: 14

  1. CVE-2026-57585

    High · CVSS 7.5EPSS 0.49%No fix published

    MessagePack: Out-of-bounds read/crash on Unpacker reuse after caught error

    MessagePack is the serializer implementation for Python msgpack.org. Prior to 1.2.1, there is an Out-of-bounds read/crash on Unpacker reuse after a caught error, potentially leading to a DoS attack. If the Unpacker is used repeatedly after an error occurs, the process may crash with a SEGV. This issue has been fixed in version 1.2.1.

    Published Updated
  2. CVE-2026-45409

    Medium · CVSS 6.9EPSS 0.46%No fix published

    Internationalized Domain Names in Applications (IDNA): Specially crafted inputs to idna.encode() can bypass CVE-2024-3651 fix

    Internationalized Domain Names in Applications (IDNA) for Python provides support for Internationalized Domain Names in Applications (IDNA) and Unicode IDNA Compatibility Processing. In versions prior to 3.15, payloads such as `"\u0660" * N` or `"\u30fb" * N + "\u6f22"` utilize the `valid_contexto` function prior to length rejection, and for high values of `N` will take a long time to process. This is the same issue as CVE-2024-3651, however the original remediation in 2024 was not a complete fix. A specially crafted argument to the `idna.encode()` function could consume significant resources. This may lead to a denial-of-service. Starting in

    Published Updated
  3. CVE-2026-8643

    Medium · CVSS 4.1EPSS 0.47%No fix published

    pip can extract console_scripts and gui_scripts outside installation directory

    pip would treat console_scripts and gui_scripts as paths instead of file names without sanitizing the resolved absolute path to the installation directory, leading to entry points being installed outside the installation directory.

    Published Updated
  4. CVE-2026-44431

    High · CVSS 8.2EPSS 0.34%Public exploitNo fix published

    urllib3: Sensitive headers forwarded across origins in proxied low-level redirects

    urllib3 is an HTTP client library for Python. From 1.23 to before 2.7.0, cross-origin redirects followed from the low-level API via ProxyManager.connection_from_url().urlopen(..., assert_same_host=False) still forward these sensitive headers. This vulnerability is fixed in 2.7.0.

    Published Updated
  5. CVE-2026-44432

    High · CVSS 8.9EPSS 0.88%No fix published

    urllib3: Decompression-bomb safeguards bypassed in parts of the streaming API

    urllib3 is an HTTP client library for Python. From 2.6.0 to before 2.7.0, urllib3 could decompress the whole response instead of the requested portion (1) during the second HTTPResponse.read(amt=N) call when the response was decompressed using the official Brotli library or (2) when HTTPResponse.drain_conn() was called after the response had been read and decompressed partially (compression algorithm did not matter here). These issues could cause urllib3 to fully decode a small amount of highly compressed data in a single operation. This could result in excessive resource consumption (high CPU usage and massive memory allocation for the decom

    Published Updated
  6. CVE-2026-6357

    Medium · CVSS 5.3EPSS 0.17%No fix published

    pip self-update functionality can import newly installed modules after wheel installation

    pip prior to version 26.1 would run self-update check functionality after installing wheel files which required importing well-known Python modules names. These module imports were intentionally deferred to increase startup time of the pip CLI. The patch changes self-update functionality to run before wheels are installed to prevent newly-installed modules from being imported shortly after the installation of a wheel package. Users should still review package contents prior to installation.

    Published Updated
  7. CVE-2026-3219

    Medium · CVSS 4.6EPSS 0.14%No fix published

    pip doesn't reject concatenated ZIP and tar archives

    pip handles concatenated tar and ZIP files as ZIP files regardless of filename or whether a file is both a tar and ZIP file. This behavior could result in confusing installation behavior, such as installing "incorrect" files according to the filename of the archive. New behavior only proceeds with installation if the file identifies uniquely as a ZIP or tar archive, not as both.

    Published Updated
  8. CVE-2026-25645

    Medium · CVSS 4.4EPSS 0.19%No fix published

    Requests has Insecure Temp File Reuse in its extract_zipped_paths() utility function

    Requests is a HTTP library. Prior to version 2.33.0, the `requests.utils.extract_zipped_paths()` utility function uses a predictable filename when extracting files from zip archives into the system temporary directory. If the target file already exists, it is reused without validation. A local attacker with write access to the temp directory could pre-create a malicious file that would be loaded in place of the legitimate one. Standard usage of the Requests library is not affected by this vulnerability. Only applications that call `extract_zipped_paths()` directly are impacted. Starting in version 2.33.0, the library extracts files to a non-d

    Published Updated
  9. CVE-2026-1703

    Low · CVSS 2EPSS 0.44%No fix published

    Limited path traversal when installing wheel archives

    When pip is installing and extracting a maliciously crafted wheel archive, files may be extracted outside the installation directory. The path traversal is limited to prefixes of the installation directory, thus isn't able to inject or overwrite executable files in typical situations.

    Published Updated
  10. CVE-2026-24049

    High · CVSS 7.1EPSS 0.35%No fix published

    wheel Allows Arbitrary File Permission Modification via Path Traversal

    wheel is a command line tool for manipulating Python wheel files, as defined in PEP 427. In versions 0.40.0 through 0.46.1, the unpack function is vulnerable to file permission modification through mishandling of file permissions after extraction. The logic blindly trusts the filename from the archive header for the chmod operation, even though the extraction process itself might have sanitized the path. Attackers can craft a malicious wheel file that, when unpacked, changes the permissions of critical system files (e.g., /etc/passwd, SSH keys, config files), allowing for Privilege Escalation or arbitrary code execution by modifying now-writa

    Published Updated
  11. CVE-2026-21441

    High · CVSS 8.9EPSS 2.92%No fix published

    urllib3 vulnerable to decompression-bomb safeguard bypass when following HTTP redirects (streaming API)

    urllib3 is an HTTP client library for Python. urllib3's streaming API is designed for the efficient handling of large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once. urllib3 can perform decoding or decompression based on the HTTP `Content-Encoding` header (e.g., `gzip`, `deflate`, `br`, or `zstd`). When using the streaming API, the library decompresses only the necessary bytes, enabling partial content consumption. Starting in version 1.22 and prior to version 2.6.3, for HTTP redirect responses, the library would read the entire response body to drain the connection and decomp

    Published Updated
  12. CVE-2025-66471

    High · CVSS 8.9EPSS 0.68%No fix published

    urllib3 Streaming API improperly handles highly compressed data

    urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the Streaming API improperly handles highly compressed data. urllib3's streaming API is designed for the efficient handling of large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once. When streaming a compressed response, urllib3 can perform decoding or decompression based on the HTTP Content-Encoding header (e.g., gzip, deflate, br, or zstd). The library must read compressed data from the network and decompress it until the requested chunk size is met. Any resulting decompresse

    Published Updated
  13. CVE-2025-66418

    High · CVSS 8.9EPSS 0.68%No fix published

    urllib3 allows an unbounded number of links in the decompression chain

    urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.24 and prior to 2.6.0, the number of links in the decompression chain was unbounded allowing a malicious server to insert a virtually unlimited number of compression steps leading to high CPU usage and massive memory allocation for the decompressed data. This vulnerability is fixed in 2.6.0.

    Published Updated

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