
CVE-Katalog
CVE-2026-15806
The HTTPPasswordMgr class in the urllib.request module, along with its subclasses HTTPPasswordMgrWithDefaultRealm and HTTPPasswordMgrWithPriorAuth, did not take the URL scheme into account when matchi
- Schweregrad
- Medium · CVSS 6
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.53% · Oct 22, 2026
The HTTPPasswordMgr class in the urllib.request module, along with its subclasses HTTPPasswordMgrWithDefaultRealm and HTTPPasswordMgrWithPriorAuth, did not take the URL scheme into account when matching stored credentials against a requested URL. Credentials added for an https:// URL were also used for requests to the same host over http://, so an attacker able to redirect or downgrade a client to plain HTTP (for example, via an HTTPS-to-HTTP redirect or an on-path position) could capture credentials in cleartext. Credentials added for http:// URLs could likewise be sent over https://. Credential matching is now scoped by URL scheme. Credentials registered with a URL that includes a scheme are only used for requests with the same scheme. Credentials registered with a bare authority (such as example.com or example.com:8080) continue to match any scheme, preserving compatibility with existing code, including proxy authentication. Users who cannot upgrade immediately can mitigate by ensuring that applications never make plain http:// requests to hosts for which credentials are registered, for example by not following redirects to http:// URLs.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | pypy3 | sid | 8.0.1+dfsg-1 | vulnerable |
| Debian | pypy3 | forky | 8.0.1+dfsg-1 | vulnerable |
| Debian | pypy3 | trixie | 7.3.19+dfsg-2 | vulnerable |
| Debian | pypy3 | bookworm | 7.3.11+dfsg-2+deb12u3 | vulnerable |
| Debian | python3.11 | bookworm | 3.11.2-6+deb12u8 | vulnerable |
| Debian | python3.11 | bookworm-security | 3.11.2-6+deb12u9 | fixed |
| Suse | python310 | linux enterprise high performance computing 15 sp4-espos | 3.10.22-150400.4.129.1 | fixed |
| Suse | python310-core | linux enterprise high performance computing 15 sp4-espos | 3.10.22-150400.4.129.1 | fixed |
| Suse | python310 | linux enterprise high performance computing 15 sp4-ltss | 3.10.22-150400.4.129.1 | fixed |
| Suse | python310-core | linux enterprise high performance computing 15 sp4-ltss | 3.10.22-150400.4.129.1 | fixed |
| Suse | python310 | linux enterprise server 15 sp4-ltss | 3.10.22-150400.4.129.1 | fixed |
| Suse | python310-core | linux enterprise server 15 sp4-ltss | 3.10.22-150400.4.129.1 | fixed |
| Suse | python310 | linux enterprise server for sap applications 15 sp4 | 3.10.22-150400.4.129.1 | fixed |
| Suse | python310-core | linux enterprise server for sap applications 15 sp4 | 3.10.22-150400.4.129.1 | fixed |
| Suse | python | linux enterprise module for package hub 15 sp7 | 2.7.18-150000.133.1 | fixed |
| Suse | python-base | linux enterprise module for package hub 15 sp7 | 2.7.18-150000.133.1 | fixed |
| Alpine | python3 | 3.21 | 3.12.15-r0 | fixed |
| Alpine | python3 | 3.22 | 3.12.15-r0 | fixed |
| Alpine | python3 | 3.23 | 3.12.15-r0 | fixed |
| Alpine | python3 | 3.24 | 3.14.8-r0 | fixed |
| Suse | python311 | linux micro 6.0 | 3.11.16-1.1 | fixed |
| Suse | python311-core | linux micro 6.0 | 3.11.16-1.1 | fixed |
| Fedora | python3.14 | 43 | 0:3.14.8-1.fc43 | fixed |
| Fedora | python3-docs | 43 | 0:3.14.8-1.fc43 | fixed |
| Fedora | python3.14 | 44 | 0:3.14.8-1.fc44 | fixed |
| Fedora | python3-docs | 44 | 0:3.14.8-1.fc44 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | pypy3 | source | sid | (unfixed) | not yet assigned | Not reported | [1147448] |
| Debian | pypy3 | source | forky | (unfixed) | not yet assigned | Not reported | [1147448] |
| Debian | pypy3 | source | trixie | (unfixed) | not yet assigned | Not reported | [1147448] |
| Debian | pypy3 | source | bookworm | (unfixed) | not yet assigned | Not reported | [1147448] |
| Debian | python3.11 | source | bookworm | 3.11.2-6+deb12u9 | not yet assigned | Not reported | Not reported |
| Suse | python310 | rpm | linux enterprise high performance computing 15 sp4-espos | 3.10.22-150400.4.129.1 | Not reported | SUSE-SU-2026:4630-1 | Not reported |
| Suse | python310-core | rpm | linux enterprise high performance computing 15 sp4-espos | 3.10.22-150400.4.129.1 | Not reported | SUSE-SU-2026:4630-1 | Not reported |
| Suse | python310 | rpm | linux enterprise high performance computing 15 sp4-ltss | 3.10.22-150400.4.129.1 | Not reported | SUSE-SU-2026:4630-1 | Not reported |
| Suse | python310-core | rpm | linux enterprise high performance computing 15 sp4-ltss | 3.10.22-150400.4.129.1 | Not reported | SUSE-SU-2026:4630-1 | Not reported |
| Suse | python310 | rpm | linux enterprise server 15 sp4-ltss | 3.10.22-150400.4.129.1 | Not reported | SUSE-SU-2026:4630-1 | Not reported |
| Suse | python310-core | rpm | linux enterprise server 15 sp4-ltss | 3.10.22-150400.4.129.1 | Not reported | SUSE-SU-2026:4630-1 | Not reported |
| Suse | python310 | rpm | linux enterprise server for sap applications 15 sp4 | 3.10.22-150400.4.129.1 | Not reported | SUSE-SU-2026:4630-1 | Not reported |
| Suse | python310-core | rpm | linux enterprise server for sap applications 15 sp4 | 3.10.22-150400.4.129.1 | Not reported | SUSE-SU-2026:4630-1 | Not reported |
| Suse | python | rpm | linux enterprise module for package hub 15 sp7 | 2.7.18-150000.133.1 | Not reported | SUSE-SU-2026:4411-1 | Not reported |
| Suse | python-base | rpm | linux enterprise module for package hub 15 sp7 | 2.7.18-150000.133.1 | Not reported | SUSE-SU-2026:4411-1 | Not reported |
| Alpine | python3 | apk | 3.21 | 3.12.15-r0 | Not reported | ALPINE-CVE-2026-15806 | Not reported |
| Alpine | python3 | apk | 3.22 | 3.12.15-r0 | Not reported | ALPINE-CVE-2026-15806 | Not reported |
| Alpine | python3 | apk | 3.23 | 3.12.15-r0 | Not reported | ALPINE-CVE-2026-15806 | Not reported |
| Alpine | python3 | apk | 3.24 | 3.14.8-r0 | Not reported | ALPINE-CVE-2026-15806 | Not reported |
| Suse | python311 | rpm | linux micro 6.0 | 3.11.16-1.1 | Not reported | SUSE-SU-2026:23845-1 | Not reported |
| Suse | python311-core | rpm | linux micro 6.0 | 3.11.16-1.1 | Not reported | SUSE-SU-2026:23845-1 | Not reported |
| Fedora | python3.14 | rpm | 43 | 0:3.14.8-1.fc43 | Not reported | FEDORA-2026-A3DA6BB5CD#CVE-2026-15806 | Not reported |
| Fedora | python3-docs | rpm | 43 | 0:3.14.8-1.fc43 | Not reported | FEDORA-2026-A3DA6BB5CD#CVE-2026-15806 | Not reported |
| Fedora | python3.14 | rpm | 44 | 0:3.14.8-1.fc44 | Not reported | FEDORA-2026-6261B26F4E#CVE-2026-15806 | Not reported |
| Fedora | python3-docs | rpm | 44 | 0:3.14.8-1.fc44 | Not reported | FEDORA-2026-6261B26F4E#CVE-2026-15806 | Not reported |
Notes
[trixie] pypy3: Minor issue [bookworm] pypy3: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [idle-python3.11]Betroffen
Quellpaket: [python3.11]
Details (4)
3.11.2-6+deb12u8· all · bookwormBetroffen · Behoben:
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3.11.2-6+deb12u8· amd64 · bookwormBetroffen · Behoben:
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- [libpython3.11-dev]Betroffen
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3.11.2-6+deb12u8· amd64 · bookwormBetroffen · Behoben:
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- [libpython3.11-minimal]Betroffen
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3.11.2-6+deb12u8· amd64 · bookwormBetroffen · Behoben:
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3.11.2-6+deb12u8· amd64 · bookwormBetroffen · Behoben:
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- [libpython3.11-testsuite]Betroffen
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3.11.2-6+deb12u8· all · bookwormBetroffen · Behoben:
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- [pypy3]Betroffen
Details (2)
7.3.11+dfsg-2+deb12u3· amd64 · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· arm64 · bookwormBetroffen
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- [pypy3-dev]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-doc]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
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- [pypy3-lib]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.11+dfsg-2+deb12u3· amd64 · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· arm64 · bookwormBetroffen
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- [pypy3-lib-testsuite]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [pypy3-tk]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.11+dfsg-2+deb12u3· amd64 · bookwormBetroffen
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7.3.11+dfsg-2+deb12u3· arm64 · bookwormBetroffen
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- [pypy3-venv]Betroffen
Quellpaket: [pypy3]
Details (2)
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
7.3.11+dfsg-2+deb12u3· all · bookwormBetroffen
nvd · pypy3 · debian · bookworm; nvd · pypy3 · debian · 12
- [python3.11]Betroffen
Details (4)
3.11.2-6+deb12u8· amd64 · bookwormBetroffen · Behoben:
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3.11.2-6+deb12u8· arm64 · bookwormBetroffen · Behoben:
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- [python3.11-dbg]Betroffen
Quellpaket: [python3.11]
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- [python3.11-dev]Betroffen
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3.11.2-6+deb12u8· amd64 · bookwormBetroffen · Behoben:
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- [python3.11-doc]Betroffen
Quellpaket: [python3.11]
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3.11.2-6+deb12u8· all · bookwormBetroffen · Behoben:
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- [python3.11-examples]Betroffen
Quellpaket: [python3.11]
Details (4)
3.11.2-6+deb12u8· all · bookwormBetroffen · Behoben:
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- [python3.11-full]Betroffen
Quellpaket: [python3.11]
Details (4)
3.11.2-6+deb12u8· amd64 · bookwormBetroffen · Behoben:
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3.11.2-6+deb12u8· arm64 · bookwormBetroffen · Behoben:
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3.11.2-6+deb12u3· amd64 · bookworm-securityBetroffen · Behoben:
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Beobachtet:
Referenzen
- [https://access.redhat.com/errata/RHSA-2026:65531]
- [https://bodhi.fedoraproject.org/updates/FEDORA-2026-6261b26f4e]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2545938]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_4743-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-15806]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-15806]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-15806]
- [https://osv.dev/vulnerability/SUSE-SU-2026:23845-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:4411-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:4630-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-15806]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2924.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [Fedora security updates (Bodhi)] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]