CVE catalog
CVE-2026-41205
Mako is a template library written in Python. Prior to…
Mako is a template library written in Python. Prior to 1.3.11, TemplateLookup.get_template() is vulnerable to path traversal when a URI starts with // (e.g., //../../../secret.txt). The root cause is an inconsistency between two slash-stripping implementations. Any file readable by the process can be returned as rendered template content when an application passes untrusted input directly to TemplateLookup.get_template(). This vulnerability is fixed in 1.3.11.
- Severity
- High · CVSS 7.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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
- Source
- [NVD] · [CVE record]
- EPSS
- 0.36% · Oct 27, 2026
Projects and upstream resources
Reported versions and fixes
Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.
Version impact has not been established. The original provider fields are retained below.
Provider details and historical evidence
Original provider fields
{
"package_releases": [
{
"name": "mako",
"status": "vulnerable",
"release": "sid",
"version": "1.3.10-3"
},
{
"name": "mako",
"status": "vulnerable",
"release": "forky",
"version": "1.3.10-3"
},
{
"name": "mako",
"status": "vulnerable",
"release": "trixie",
"version": "1.3.9-1"
},
{
"name": "mako",
"status": "vulnerable",
"release": "bookworm",
"version": "1.2.4+ds-1"
}
],
"fixed_versions": [
{
"bug": 1134729,
"name": "mako",
"type": "source",
"origin": null,
"release": "sid",
"urgency": "not yet assigned",
"fixed_version": ""
},
{
"bug": 1134729,
"name": "mako",
"type": "source",
"origin": null,
"release": "forky",
"urgency": "not yet assigned",
"fixed_version": ""
},
{
"bug": 1134729,
"name": "mako",
"type": "source",
"origin": null,
"release": "trixie",
"urgency": "not yet assigned",
"fixed_version": ""
},
{
"bug": 1134729,
"name": "mako",
"type": "source",
"origin": null,
"release": "bookworm",
"urgency": "not yet assigned",
"fixed_version": ""
}
],
"distribution_packages": [
{
"name": "mako",
"ecosystem": "cpe",
"fixed_version": "1.3.2-1ubuntu0.1"
},
{
"name": "python-mako-doc",
"ecosystem": "cpe",
"fixed_version": "1.3.2-1ubuntu0.1"
},
{
"name": "python3-mako",
"ecosystem": "cpe",
"fixed_version": "1.3.2-1ubuntu0.1"
},
{
"name": "mako",
"ecosystem": "cpe",
"fixed_version": "not yet fixed"
},
{
"name": "mako",
"ecosystem": "cpe",
"fixed_version": "1.3.11"
},
{
"name": "mako",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.11"
}
]
}
],
"ecosystem": "PyPI",
"fixed_version": "1.3.11",
"provider_record_id": "PYSEC-2026-88"
},
{
"name": "mako",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.11"
}
]
}
],
"ecosystem": "PyPI",
"fixed_version": "1.3.11",
"provider_record_id": "GHSA-V92G-XGXW-VVMM"
},
{
"name": "mako",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.0+ds1-1ubuntu2.1+esm1"
}
]
}
],
"release": "pro",
"versions": [
"1.0.7+ds1-1",
"1.1.0+ds1-1",
"1.1.0+ds1-1ubuntu1",
"1.1.0+ds1-1ubuntu2",
"1.1.0+ds1-1ubuntu2.1"
],
"ecosystem": "deb",
"fixed_version": "1.1.0+ds1-1ubuntu2.1+esm1",
"provider_record_id": "USN-8234-1"
},
{
"name": "mako",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.3+ds1-2ubuntu0.2"
}
]
}
],
"release": "22.04",
"versions": [
"1.1.3+ds1-2",
"1.1.3+ds1-2ubuntu0.1"
],
"ecosystem": "deb",
"fixed_version": "1.1.3+ds1-2ubuntu0.2",
"provider_record_id": "USN-8234-1"
},
{
"name": "mako",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.2-1ubuntu0.1"
}
]
}
],
"release": "24.04",
"versions": [
"1.2.4+ds-2",
"1.3.1-1",
"1.3.2-1"
],
"ecosystem": "deb",
"fixed_version": "1.3.2-1ubuntu0.1",
"provider_record_id": "USN-8234-1"
},
{
"name": "mako",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.9-1ubuntu0.1"
}
]
}
],
"release": "25.10",
"versions": [
"1.3.8-2",
"1.3.9-1"
],
"ecosystem": "deb",
"fixed_version": "1.3.9-1ubuntu0.1",
"provider_record_id": "USN-8234-1"
},
{
"name": "mako",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.10-3ubuntu0.1"
}
]
}
],
"release": "26.04",
"versions": [
"1.3.9-1",
"1.3.10-3",
"1.3.10-3build1"
],
"ecosystem": "deb",
"fixed_version": "1.3.10-3ubuntu0.1",
"provider_record_id": "USN-8234-1"
},
{
"name": "mako",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.0+ds1-1ubuntu2.1+esm1"
}
]
}
],
"release": "pro",
"versions": [
"1.0.7+ds1-1",
"1.1.0+ds1-1",
"1.1.0+ds1-1ubuntu1",
"1.1.0+ds1-1ubuntu2",
"1.1.0+ds1-1ubuntu2.1"
],
"ecosystem": "deb",
"fixed_version": "1.1.0+ds1-1ubuntu2.1+esm1",
"provider_record_id": "UBUNTU-CVE-2026-41205"
},
{
"name": "mako",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.3+ds1-2ubuntu0.2"
}
]
}
],
"release": "22.04",
"versions": [
"1.1.3+ds1-2",
"1.1.3+ds1-2ubuntu0.1"
],
"ecosystem": "deb",
"fixed_version": "1.1.3+ds1-2ubuntu0.2",
"provider_record_id": "UBUNTU-CVE-2026-41205"
},
{
"name": "mako",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.2-1ubuntu0.1"
}
]
}
],
"release": "24.04",
"versions": [
"1.2.4+ds-2",
"1.3.1-1",
"1.3.2-1"
],
"ecosystem": "deb",
"fixed_version": "1.3.2-1ubuntu0.1",
"provider_record_id": "UBUNTU-CVE-2026-41205"
},
{
"name": "mako",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.9-1ubuntu0.1"
}
]
}
],
"release": "25.10",
"versions": [
"1.3.8-2",
"1.3.9-1"
],
"ecosystem": "deb",
"fixed_version": "1.3.9-1ubuntu0.1",
"provider_record_id": "UBUNTU-CVE-2026-41205"
},
{
"name": "mako",
"distro": "ubuntu",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.10-3ubuntu0.1"
}
]
}
],
"release": "26.04",
"versions": [
"1.3.9-1",
"1.3.10-3",
"1.3.10-3build1"
],
"ecosystem": "deb",
"fixed_version": "1.3.10-3ubuntu0.1",
"provider_record_id": "UBUNTU-CVE-2026-41205"
},
{
"name": "python-Mako",
"distro": "opensuse",
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.11-1.1"
}
]
}
],
"release": "tumbleweed",
"versions": [],
"ecosystem": "rpm",
"fixed_version": "1.3.11-1.1",
"provider_record_id": "OPENSUSE-SU-2026:10616-1"
},
{
"name": "mako",
"ranges": [
{
"fixed": "1.3.11",
"introduced": "",
"last_affected": "",
"start_excluding": ""
}
],
"ecosystem": "cpe",
"fixed_version": "1.3.11",
"provider_record_id": "NVD-CVE-2026-41205"
}
]
}Publisher notes
[trixie] mako: Minor issue [bookworm] mako: Minor issue
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [python3-mako]Unknown
Source package: [mako]
Details (2)
1.2.4+ds-1· all · bookwormAffected
nvd · mako · debian · bookworm; nvd · mako · debian · 12
1.2.4+ds-1· all · bookwormAffected
nvd · mako · debian · bookworm; nvd · mako · debian · 12
- [python-mako-doc]Unknown
Source package: [mako]
Details (2)
1.2.4+ds-1· all · bookwormAffected
nvd · mako · debian · bookworm; nvd · mako · debian · 12
1.2.4+ds-1· all · bookwormAffected
nvd · mako · debian · bookworm; nvd · mako · debian · 12
[Debian 13 (Trixie)]
- [python3-mako]Unknown
Source package: [mako]
Details (2)
1.3.9-1· all · trixieAffected
nvd · mako · debian · 13
1.3.9-1· all · trixieAffected
nvd · mako · debian · 13
- [python-mako-doc]Unknown
Source package: [mako]
Details (2)
1.3.9-1· all · trixieAffected
nvd · mako · debian · 13
1.3.9-1· all · trixieAffected
nvd · mako · debian · 13
[openSUSE Tumbleweed]
- [python313-Mako]Unknown
Source package: [python-Mako]
Details (1)
1.4.1-1.1· noarch · tumbleweedUnknown · Fixed:
1.3.11-1.1Version impact unknown
nvd · python-Mako · opensuse · tumbleweed
- [python314-Mako]Unknown
Source package: [python-Mako]
Details (1)
1.4.1-1.1· noarch · tumbleweedUnknown · Fixed:
1.3.11-1.1Version impact unknown
nvd · python-Mako · opensuse · tumbleweed
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10616-1.json]
- [https://github.com/sqlalchemy/mako/commit/e05ac61989a7fb9dd7dcde6cfd72dc48328719a3]
- [https://github.com/sqlalchemy/mako/releases/tag/rel_1_3_11]
- [https://github.com/sqlalchemy/mako/security/advisories/GHSA-v92g-xgxw-vvmm]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-41205]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-41205]
- [https://osv.dev/vulnerability/GHSA-v92g-xgxw-vvmm]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-41205]
- [https://osv.dev/vulnerability/USN-8234-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10616-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-41205]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41205.json]
- [https://ubuntu.com/security/notices/USN-8234-1]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]