DEBIAN-CVE-2026-26825
A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xls_parseWorkBook() and is triggered by uninitialized heap memory originating from the OLE layer (ole2_read). The flaw is detectable with MemorySanitizer (MSAN) and can lead to undefined behavior, incorrect parsing logic, or potential information disclosure.
DEBIAN-CVE-2026-26825
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-2026-26825
r-cran-readxl
Source reference: /affected/0/package/name
- Affected versions
- 1.4.2-1
Source reference:
/affected/0/versions1.4.3-1Source reference:
/affected/0/versions1.4.4-1Source reference:
/affected/0/versions1.4.5-1Source reference:
/affected/0/versions1.5.0-1Source reference:
/affected/0/versions1.5.0.1-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
r-cran-readxl
Source reference: /affected/1/package/name
- Affected versions
- 1.4.5-1
Source reference:
/affected/1/versions1.5.0-1Source reference:
/affected/1/versions1.5.0.1-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
r-cran-readxl
Source reference: /affected/2/package/name
- Affected versions
- 1.4.5-1
Source reference:
/affected/2/versions1.5.0-1Source reference:
/affected/2/versions1.5.0.1-1Source 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": "r-cran-readxl",
"purl": "pkg:deb/debian/r-cran-readxl?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.4.2-1",
"1.4.3-1",
"1.4.4-1",
"1.4.5-1",
"1.5.0-1",
"1.5.0.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-26825.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "r-cran-readxl",
"purl": "pkg:deb/debian/r-cran-readxl?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.4.5-1",
"1.5.0-1",
"1.5.0.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-26825.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "r-cran-readxl",
"purl": "pkg:deb/debian/r-cran-readxl?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.4.5-1",
"1.5.0-1",
"1.5.0.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-26825.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #6117 · Revision 1
- Added to Heist Feed
- Publisher date