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OpenAdvisories
High RHSA-2026:59409 2 CVEs

Red Hat Security Advisory: python-urllib3 security update

Published Aug 26, 2026 · Updated Oct 16, 2026

Ecosystem: Red Hat

Fixed packages 2

ReleasePackageFixed in
Red Hat · RHEL 9.6 EUS rhel_eus:9.6::baseos python-urllib3 0:1.26.5-6.el9_6.2
Red Hat · RHEL 9.6 EUS rhel_eus:9.6::baseos python3-urllib3 0:1.26.5-6.el9_6.2

Vulnerabilities 2

  • High 8.9
    CVE-2026-44432

    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 Br…

    urllib3 urllib3 open-webui katib-suggestion-hyperopt Debian Ubuntu Wolfi PyPI
  • High 8.2
    CVE-2026-44431

    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 vulnerabili…

    urllib3 urllib3 open-webui katib-suggestion-hyperopt Debian Ubuntu Azure Linux Wolfi PyPI

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2477154
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2477167
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_59409.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-44431
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-44431
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-44431
  • article
    https://github.com/urllib3/urllib3/security/advisories/GHSA-qccp-gfcp-xxvc
  • report
    https://access.redhat.com/security/cve/CVE-2026-44432
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-44432
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-44432
  • article
    https://github.com/urllib3/urllib3/security/advisories/GHSA-mf9v-mfxr-j63j