Medium
Security advisory
autoar-extractor.c in GNOME gnome-autoar before 0.3.1, as used by GNOME Shell, Nautilus, and other software, allows Directory Traversal during extraction because it lacks a check of whether a file's parent is a symlink in certain complex situations. NOTE: this issue exists because of an incomplete fix for CVE-2020-36241.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-28650
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:42 UTC · Revision 1
Source evidence
autoar-extractor.c in GNOME gnome-autoar before 0.3.1, as used by GNOME Shell, Nautilus, and other software, allows Directory Traversal during extraction because it lacks a check of whether a file's parent is a symlink in certain complex situations. NOTE: this issue exists because of an incomplete fix for CVE-2020-36241.
osv:CVE-2021-28650
Complete source record
{
"id": "91b3456c7be77b852738dbe34f0cc2b7c14e23ef0f1bf07d87893bfb99f5bf87",
"url": "https://osv.dev/vulnerability/CVE-2021-28650",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-28650",
"summary": "autoar-extractor.c in GNOME gnome-autoar before 0.3.1, as used by GNOME Shell, Nautilus, and other software, allows Directory Traversal during extraction because it lacks a check of whether a file's parent is a symlink in certain complex situations. NOTE: this issue exists because of an incomplete fix for CVE-2020-36241.",
"evidence": "osv:CVE-2021-28650",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-28650",
"aliases": [
"CVE-2021-28650"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://gitlab.gnome.org/gnome/gnome-autoar",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "a1b7bb873b3d6ef05cf001e881d1aa8ff8efabea"
},
{
"fixed": "8109c368c6cfdb593faaf698c2bf5da32bb1ace4"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:gnome:gnome-autoar:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "0.3.1"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "8109c368c6cfdb593faaf698c2bf5da32bb1ace4"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"0.3.0",
"0.2.4",
"0.2.3",
"0.2.2",
"0.2.1",
"0.2.0",
"0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-28650.json",
"vanir_signatures": [
{
"id": "CVE-2021-28650-2d6dd87f",
"digest": {
"length": 284,
"function_hash": "99373367613554809577081196480085047086"
},
"source": "https://gitlab.gnome.org/gnome/gnome-autoar@8109c368c6cfdb593faaf698c2bf5da32bb1ace4",
"target": {
"file": "gnome-autoar/autoar-extractor.c",
"function": "autoar_extractor_check_file_conflict"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2021-28650-e3329370",
"digest": {
"length": 1996,
"function_hash": "10935086851531793748285076384108417827"
},
"source": "https://gitlab.gnome.org/gnome/gnome-autoar@8109c368c6cfdb593faaf698c2bf5da32bb1ace4",
"target": {
"file": "gnome-autoar/autoar-extractor.c",
"function": "autoar_extractor_step_extract"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2021-28650-fe7c8f3e",
"digest": {
"threshold": 0.9,
"line_hashes": [
"202873567088741737755139773778856684414",
"253786553022999834027812518448673111945",
"86261100617153731251853289598727974625",
"160936512739695133357499748907602668169",
"137374394736149040872317987219553189945",
"270732997768496155435744769357381582851",
"244127320031209311580005316087106093783",
"157603545734204621894498381227191520218",
"231909359212710678941792030726133514565",
"322724400400682001161733752636446320027",
"148762820276148228685341759328016027759",
"80526361010997095919849916967872224147",
"45654882263623040256181518074595264081",
"290449237765823922557442662957704297919",
"143508716903283642467802267094980547991",
"253341687466085229640557304141302650248",
"105135349804760838859480469610730392589",
"240226979070748456517245327310687153925",
"339279520886571069745447021750983878169",
"145062458361469922140567365199213942456",
"240666612790968850778280645138938878176",
"85682285750154980863096319146138418682",
"276989541056842942275151211316468774779",
"10958260111633119823476386537609705369",
"112240283909046655480806255810305227124",
"171209949003521789335708262986558689800",
"94354684989209136025792448985348421424",
"313182116061384494489975579325336736942",
"172040966644835096366579898560909236132",
"226674900431117975290627699646407248066",
"216325880258227678019308110977562702078",
"56216488792594233498650375158183283213",
"173766603905420724977676456036425120486",
"301181788405733540170702592044020477872"
]
},
"source": "https://gitlab.gnome.org/gnome/gnome-autoar@8109c368c6cfdb593faaf698c2bf5da32bb1ace4",
"target": {
"file": "gnome-autoar/autoar-extractor.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-20T14:17:20Z"
}
}
],
"modified": "2026-10-20T14:17:20.919034637Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BN5TVQ7OHZEGY6AGFLAZWCVCI53RYNHQ/",
"https://security.gentoo.org/glsa/202105-10",
"https://gitlab.gnome.org/GNOME/gnome-autoar/-/commit/8109c368c6cfdb593faaf698c2bf5da32bb1ace4"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "34"
},
{
"last_affected": "34"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2021-28650",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 388778,
"published_at": "2021-03-17T06:15:14.64+00:00"
}