DEBIAN-CVE-2026-41205
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.
DEBIAN-CVE-2026-41205
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-41205
mako
Source reference: /affected/0/package/name
- Affected versions
- 1.2.4+ds-1
Source reference:
/affected/0/versions1.2.4+ds-2Source reference:
/affected/0/versions1.3.1-1Source reference:
/affected/0/versions1.3.10-1Source reference:
/affected/0/versions1.3.10-2Source reference:
/affected/0/versions1.3.10-3Source reference:
/affected/0/versions1.3.2-1Source reference:
/affected/0/versions1.3.5-1Source reference:
/affected/0/versions1.3.5-1.1Source reference:
/affected/0/versions1.3.6-1Source reference:
/affected/0/versions1.3.8-1Source reference:
/affected/0/versions1.3.8-2Source reference:
/affected/0/versions1.3.9-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
mako
Source reference: /affected/1/package/name
- Affected versions
- 1.3.10-1
Source reference:
/affected/1/versions1.3.10-2Source reference:
/affected/1/versions1.3.10-3Source reference:
/affected/1/versions1.3.9-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
mako
Source reference: /affected/2/package/name
- Affected versions
- 1.3.10-1
Source reference:
/affected/2/versions1.3.10-2Source reference:
/affected/2/versions1.3.10-3Source reference:
/affected/2/versions1.3.9-1Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mako",
"purl": "pkg:deb/debian/mako?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.2.4+ds-1",
"1.2.4+ds-2",
"1.3.1-1",
"1.3.10-1",
"1.3.10-2",
"1.3.10-3",
"1.3.2-1",
"1.3.5-1",
"1.3.5-1.1",
"1.3.6-1",
"1.3.8-1",
"1.3.8-2",
"1.3.9-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41205.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mako",
"purl": "pkg:deb/debian/mako?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.3.10-1",
"1.3.10-2",
"1.3.10-3",
"1.3.9-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41205.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "mako",
"purl": "pkg:deb/debian/mako?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.3.10-1",
"1.3.10-2",
"1.3.10-3",
"1.3.9-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41205.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57634 · Revision 1
- Added to Heist Feed
- Publisher date