ALPINE-CVE-2026-33056
tar-rs is a tar archive reading/writing library for Rust. In versions 0.4.44 and below, when unpacking a tar archive, the tar crate's unpack_dir function uses fs::metadata() to check whether a path that already exists is a directory. Because fs::metadata() follows symbolic links, a crafted tarball containing a symlink entry followed by a directory entry with the same name causes the crate to treat the symlink target as a valid existing directory — and subsequently apply chmod to it. This allows an attacker to modify the permissions of arbitrary directories outside the extraction root. This issue has been fixed in version 0.4.45.
ALPINE-CVE-2026-33056
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:ALPINE-CVE-2026-33056
rust
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.78.0-r1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
rust
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.83.0-r1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
rust
Source reference: /affected/2/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.87.0-r1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
rust
Source reference: /affected/3/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.91.1-r1
Source reference:
/affected/3/ranges - Prerequisites
- Not stated in this record
rust
Source reference: /affected/4/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.94.0-r1
Source reference:
/affected/4/ranges - 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"
},
{
"fixed": "1.78.0-r1"
}
]
}
],
"package": {
"name": "rust",
"purl": "pkg:apk/alpine/rust?arch=source",
"ecosystem": "Alpine:v3.20"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33056.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.83.0-r1"
}
]
}
],
"package": {
"name": "rust",
"purl": "pkg:apk/alpine/rust?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33056.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.87.0-r1"
}
]
}
],
"package": {
"name": "rust",
"purl": "pkg:apk/alpine/rust?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33056.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.91.1-r1"
}
]
}
],
"package": {
"name": "rust",
"purl": "pkg:apk/alpine/rust?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33056.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.94.0-r1"
}
]
}
],
"package": {
"name": "rust",
"purl": "pkg:apk/alpine/rust?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33056.json"
},
"ecosystem_specific": {}
}
]Publisher severity
No explicit severity was provided.
- Event
- #54266 · Revision 1
- Added to Heist Feed
- Publisher date