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CVE-2026-41132

CKAN: No certificate validation on STMP connection

6.6 MediumFix available

CKAN is an open-source DMS (data management system) for powering data hubs and data portals. Prior to 2.10.10 and 2.11.5, the configured SMTP server may be spoofed with any certificate (e.g. self-signed), leaving credentials and all emails sent open to MITM attacks. This vulnerability is fixed in 2.10.10 and 2.11.5.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
None

Exploit likelihood

0.19%Up 0.2 points since May 14, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.6

CKAN: No certificate validation on STMP connection

CKAN is an open-source DMS (data management system) for powering data hubs and data portals. Prior to 2.10.10 and 2.11.5, the configured SMTP server may be spoofed with any certificate (e.g. self-signed), leaving credentials and all emails sent open to MITM attacks. This vulnerability is fixed in 2.10.10 and 2.11.5.

Record
CVE-2026-41132
CVSS 4.0
6.6 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
Weakness
CWE-295
Updated
2026-11-02
EUVDEUVD-2026-30116 6.6

CKAN is an open-source DMS (data management system) for powering data hubs and data portals. Prior to 2.10.10 and 2.11.5, the configured SMTP server may be spoofed with any certificate (e.g. self-signed), leaving credentials and all emails sent open to MITM attacks. This vulnerability is fixed in 2.10.10 and 2.11.5.

Record
EUVD-2026-30116
CVSS 4.0
6.6 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
Updated
2026-11-02
GitHub AdvisoriesGHSA-mpfm-fpgx-647q 6.6

CKAN has no certificate validation on STMP connection

Impact

Configured SMTP server may be spoofed with any certificate (e.g. self-signed), leaving credentials and all emails sent open to MITM attacks.

Patches

The vulnerability has been patched in CKAN 2.10.10 and CKAN 2.11.5

Record
GHSA-mpfm-fpgx-647q
CVSS 4.0
6.6 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
Weakness
CWE-295
Updated
2026-11-02
NVD 6.6

CKAN is an open-source DMS (data management system) for powering data hubs and data portals. Prior to 2.10.10 and 2.11.5, the configured SMTP server may be spoofed with any certificate (e.g. self-signed), leaving credentials and all emails sent open to MITM attacks. This vulnerability is fixed in 2.10.10 and 2.11.5.

Record
CVE-2026-41132
CVSS 4.0
6.6 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/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
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-295
Updated
2026-11-02
OSV 6.6

CKAN: No certificate validation on STMP connection

CKAN is an open-source DMS (data management system) for powering data hubs and data portals. Prior to 2.10.10 and 2.11.5, the configured SMTP server may be spoofed with any certificate (e.g. self-signed), leaving credentials and all emails sent open to MITM attacks. This vulnerability is fixed in 2.10.10 and 2.11.5.

Record
CVE-2026-41132
CVSS 4.0
6.6 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
Weakness
CWE-295
Updated
2026-11-02
OSVGHSA-mpfm-fpgx-647q 6.6

CKAN has no certificate validation on STMP connection

Impact

Configured SMTP server may be spoofed with any certificate (e.g. self-signed), leaving credentials and all emails sent open to MITM attacks.

Patches

The vulnerability has been patched in CKAN 2.10.10 and CKAN 2.11.5

Record
GHSA-mpfm-fpgx-647q
CVSS 4.0
6.6 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
Weakness
CWE-295
Updated
2026-11-02
OSVPYSEC-2026-2419 6.6

CKAN has no certificate validation on STMP connection

Impact

Configured SMTP server may be spoofed with any certificate (e.g. self-signed), leaving credentials and all emails sent open to MITM attacks.

Patches

The vulnerability has been patched in CKAN 2.10.10 and CKAN 2.11.5

Record
PYSEC-2026-2419
CVSS 4.0
6.6 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
ckan
PyPI
 2.11.0 to 2.11.4
2.11.5
ckan
PyPI
 before 2.10.10
2.10.10
ckan
PyPI
 2.11.0 up to 2.11.5, plus listed versions
2.11.12.11.22.11.32.11.4
2.11.5
ckan
PyPI
 before 2.10.10, plus listed versions
0.110.30.40.50.6
Show 45 moreShow less
0.70.81.01.11.21.31.3.21.3.31.41.4.11.4.21.4.31.4.3.11.51.5.11.61.71.7.11.82.02.0.12.0.72.0.82.12.1.12.1.52.1.62.10.02.10.12.10.32.10.42.10.52.10.62.10.72.10.82.10.92.22.2.12.2.32.2.42.32.3.12.3.22.3.32.3.4
2.10.10
ckan
PyPI
 before 2.10.10, 2.11.0 up to 2.11.5, plus listed versions
0.110.30.40.50.6
Show 45 moreShow less
0.70.81.01.11.21.31.3.21.3.31.41.4.11.4.21.4.31.4.3.11.51.5.11.61.71.7.11.82.02.0.12.0.72.0.82.12.1.12.1.52.1.62.10.02.10.12.10.32.10.42.10.52.10.62.10.72.10.82.10.92.11.12.11.22.11.32.11.42.22.2.12.2.32.2.42.3
2.10.102.11.5

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-41132 is a medium vulnerability (CVSS 6.6) in Ckan, published April 29, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.19%, the 9th percentile. Fixed in ckan 2.11.5.

References

This page doesn't list everything

Left out here: 134 versions. The JSON record has them.

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