CVE catalog

CVE-2026-3446

Severity: Medium · CVSS 6
Published: Apr 10, 2026, 7:16:26 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.19% · Oct 22, 2026

When calling base64.b64decode() or related functions the decoding process would stop after encountering the first padded quad regardless of whether there was more information to be processed. This can lead to data being accepted which may be processed differently by other implementations. Use "validate=True" to enable stricter processing of base64 data.

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	python3.11	bookworm	`3.11.2-6+deb12u8`	vulnerable
Debian	python3.11	bookworm-security	`3.11.2-6+deb12u9`	vulnerable
Cpe	python3.11	Not reported	Not reported	vulnerable
Suse	python311	linux enterprise module for public cloud 15 sp4	`3.11.15-150400.9.88.1`	fixed
Suse	python311-core	linux enterprise module for public cloud 15 sp4	`3.11.15-150400.9.88.1`	fixed
Suse	python36	linux enterprise server ltss extended security 12 sp5	`3.6.15-111.1`	fixed
Suse	python36-core	linux enterprise server ltss extended security 12 sp5	`3.6.15-111.1`	fixed
Suse	python	linux enterprise module for package hub 15 sp7	`2.7.18-150000.117.1`	fixed
Suse	python-base	linux enterprise module for package hub 15 sp7	`2.7.18-150000.117.1`	fixed
Opensuse	python310	tumbleweed	`3.10.20-5.1`	fixed
Opensuse	python315	tumbleweed	`3.15.0~a8-2.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	python3.11	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported
Suse	python311	rpm	linux enterprise module for public cloud 15 sp4	`3.11.15-150400.9.88.1`	Not reported	SUSE-SU-2026:2723-1	Not reported
Suse	python311-core	rpm	linux enterprise module for public cloud 15 sp4	`3.11.15-150400.9.88.1`	Not reported	SUSE-SU-2026:2723-1	Not reported
Suse	python36	rpm	linux enterprise server ltss extended security 12 sp5	`3.6.15-111.1`	Not reported	SUSE-SU-2026:2655-1	Not reported
Suse	python36-core	rpm	linux enterprise server ltss extended security 12 sp5	`3.6.15-111.1`	Not reported	SUSE-SU-2026:2655-1	Not reported
Suse	python	rpm	linux enterprise module for package hub 15 sp7	`2.7.18-150000.117.1`	Not reported	SUSE-SU-2026:1503-1	Not reported
Suse	python-base	rpm	linux enterprise module for package hub 15 sp7	`2.7.18-150000.117.1`	Not reported	SUSE-SU-2026:1503-1	Not reported
Opensuse	python310	rpm	tumbleweed	`3.10.20-5.1`	Not reported	OPENSUSE-SU-2026:10579-1	Not reported
Opensuse	python315	rpm	tumbleweed	`3.15.0~a8-2.1`	Not reported	OPENSUSE-SU-2026:10580-1	Not reported

Notes

[bookworm] python3.11: Not backported to older Python releases due to compat concerns

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[idle-python3.11]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · all · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · all · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · all · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · all · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[libpython3.11]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · amd64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · arm64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · amd64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · arm64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[libpython3.11-dbg]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · amd64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · arm64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · amd64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · arm64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[libpython3.11-dev]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · amd64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · arm64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · amd64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · arm64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[libpython3.11-minimal]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · amd64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · arm64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · amd64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · arm64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[libpython3.11-stdlib]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · amd64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · arm64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · amd64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · arm64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[libpython3.11-testsuite]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · all · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · all · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · all · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · all · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[python3.11]Affected
Details (4)
- 3.11.2-6+deb12u8 · amd64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · arm64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · amd64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · arm64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[python3.11-dbg]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · amd64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · arm64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · amd64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · arm64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[python3.11-dev]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · amd64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · arm64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · amd64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · arm64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[python3.11-doc]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · all · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · all · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · all · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · all · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[python3.11-examples]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · all · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · all · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · all · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · all · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[python3.11-full]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · amd64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · arm64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · amd64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · arm64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[python3.11-minimal]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · amd64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · arm64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · amd64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · arm64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[python3.11-nopie]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · amd64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · arm64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · amd64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · arm64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
[python3.11-venv]Affected
Source package: [python3.11]
Details (4)
- 3.11.2-6+deb12u8 · amd64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u8 · arm64 · bookworm
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · amd64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12
- 3.11.2-6+deb12u3 · arm64 · bookworm-security
  Affected
  nvd · python3.11 · debian · bookworm; nvd · python3.11 · debian · 12

[openSUSE Tumbleweed]

[python310-curses]Unknown
Source package: [python310]
Details (1)
- 3.10.20-9.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.10.20-5.1
  Version impact unknown
  nvd · python310 · opensuse · tumbleweed
[python310-dbm]Unknown
Source package: [python310]
Details (1)
- 3.10.20-9.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.10.20-5.1
  Version impact unknown
  nvd · python310 · opensuse · tumbleweed
[python310-idle]Unknown
Source package: [python310]
Details (1)
- 3.10.20-9.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.10.20-5.1
  Version impact unknown
  nvd · python310 · opensuse · tumbleweed
[python310-tk]Unknown
Source package: [python310]
Details (1)
- 3.10.20-9.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.10.20-5.1
  Version impact unknown
  nvd · python310 · opensuse · tumbleweed

Next results

Observed: Oct 23, 2026, 10:34:22 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]