High
BabelDOC: Arbitrary Code Execution via CMap Pickle Deserialization in babeldoc/pdfminer/cmapdb.py
Type: advisorySources: OSV
BabelDOC is a document translation tool. Prior to 0.6.3, BabelDOC's vendored PDF parser in babeldoc/pdfminer/cmapdb.py deserializes untrusted pickle data when CMapDB._load_data() loads CMap files. PDF-controlled Encoding or CMapName values and embedded PostScript usecmap operators can reach this sink after path separators are decoded, while _normalize_cmap_name() removes only a leading slash. Absolute paths or traversal sequences can escape the trusted CMap directories through os.path.join(), select an attacker-writable .pickle.gz file, and cause pickle.loads() to execute arbitrary Python code with the privileges of the BabelDOC process. This issue is fixed in version 0.6.3.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-54071
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 18:14 UTC · Revision 1
Source evidence
BabelDOC: Arbitrary Code Execution via CMap Pickle Deserialization in babeldoc/pdfminer/cmapdb.py
core-osv · Original sourcePublished 21 Aug 2026, 18:55 UTC
BabelDOC is a document translation tool. Prior to 0.6.3, BabelDOC's vendored PDF parser in babeldoc/pdfminer/cmapdb.py deserializes untrusted pickle data when CMapDB._load_data() loads CMap files. PDF-controlled Encoding or CMapName values and embedded PostScript usecmap operators can reach this sink after path separators are decoded, while _normalize_cmap_name() removes only a leading slash. Absolute paths or traversal sequences can escape the trusted CMap directories through os.path.join(), select an attacker-writable .pickle.gz file, and cause pickle.loads() to execute arbitrary Python code with the privileges of the BabelDOC process. This issue is fixed in version 0.6.3.
osv:CVE-2026-54071
Complete source record
{
"id": "c40d8d020050dd2719d8852bd799ba044f0fcbba5e8480509fa4faf8f085c1ee",
"url": "https://osv.dev/vulnerability/CVE-2026-54071",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "BabelDOC: Arbitrary Code Execution via CMap Pickle Deserialization in babeldoc/pdfminer/cmapdb.py",
"summary": "BabelDOC is a document translation tool. Prior to 0.6.3, BabelDOC's vendored PDF parser in babeldoc/pdfminer/cmapdb.py deserializes untrusted pickle data when CMapDB._load_data() loads CMap files. PDF-controlled Encoding or CMapName values and embedded PostScript usecmap operators can reach this sink after path separators are decoded, while _normalize_cmap_name() removes only a leading slash. Absolute paths or traversal sequences can escape the trusted CMap directories through os.path.join(), select an attacker-writable .pickle.gz file, and cause pickle.loads() to execute arbitrary Python code with the privileges of the BabelDOC process. This issue is fixed in version 0.6.3.",
"evidence": "osv:CVE-2026-54071",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-54071",
"aliases": [
"CVE-2026-54071",
"GHSA-m8gf-v64p-gfmg",
"PYSEC-2026-2389"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/funstory-ai/babeldoc",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "28f784ca6b437dbba040bfd9c67110373cd0924b"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "0.6.3"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "28f784ca6b437dbba040bfd9c67110373cd0924b"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "28f784ca6b437dbba040bfd9c67110373cd0924b"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v0.6.3"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "0.6.3"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
"versions": [
"v0.6.2",
"v0.6.1",
"v0.6.0",
"v0.5.24",
"v0.5.23",
"v0.5.22",
"v0.5.21",
"v0.5.20",
"v0.5.19",
"v0.5.18",
"v0.5.17",
"v0.5.16",
"v0.5.15",
"v0.5.14",
"v0.5.13",
"v0.5.12",
"v0.5.11",
"v0.5.10",
"v0.5.9",
"v0.5.8",
"v0.5.7",
"v0.5.6",
"v0.5.5",
"v0.5.4",
"v0.5.3",
"v0.5.2",
"v0.5.1",
"v0.5.0",
"v0.4.22",
"v0.4.21",
"v0.4.20",
"v0.4.19",
"v0.4.18",
"v0.4.17",
"v0.4.16",
"v0.4.15",
"v0.4.14",
"v0.4.13",
"v0.4.12",
"v0.4.11",
"v0.4.10",
"v0.4.9",
"v0.4.8",
"v0.4.7",
"v0.4.6",
"v0.4.5",
"v0.4.4",
"v0.4.3",
"v0.4.2",
"v0.4.1",
"v0.4.0",
"v0.3.72",
"v0.3.71",
"v0.3.70",
"v0.3.69",
"v0.3.68",
"v0.3.67",
"v0.3.66",
"v0.3.65",
"v0.3.64",
"v0.3.63",
"v0.3.62",
"v0.3.61",
"v0.3.60",
"v0.3.59",
"v0.3.58",
"v0.3.57",
"v0.3.56",
"v0.3.55",
"v0.3.54",
"v0.3.53",
"v0.3.52",
"v0.3.51",
"v0.3.50",
"v0.3.49",
"v0.3.48",
"v0.3.47",
"v0.3.45",
"v0.3.42",
"v0.3.41",
"v0.3.40",
"v0.3.39",
"v0.3.38",
"v0.3.37",
"v0.3.36",
"v0.3.34",
"v0.3.35",
"v0.3.33",
"v0.3.32",
"v0.3.31",
"v0.3.30",
"v0.3.29",
"v0.3.28",
"v0.3.27",
"v0.3.26",
"v0.3.25",
"v0.3.24",
"v0.3.23",
"v0.3.22",
"v0.3.21",
"v0.3.20",
"v0.3.19",
"v0.3.18",
"v0.3.17",
"v0.3.16",
"v0.3.15",
"v0.3.14",
"v0.3.13",
"v0.3.12",
"v0.3.11",
"v0.3.10",
"v0.3.9",
"v0.3.8",
"v0.3.7",
"v0.3.6",
"v0.3.5",
"v0.3.4",
"v0.3.3",
"v0.3.2",
"v0.3.1",
"v0.3.0",
"v0.2.33",
"v0.2.32",
"v0.2.31",
"v0.2.30",
"v0.2.29",
"v0.2.28",
"v0.2.27",
"v0.2.26",
"v0.2.25",
"v0.2.24",
"v0.2.23",
"v0.2.22",
"v0.2.21",
"v0.2.20",
"v0.2.19",
"v0.2.18",
"v0.2.17",
"v0.2.16",
"v0.2.15",
"v0.2.14",
"v0.2.13",
"v0.2.12",
"v0.2.11",
"v0.2.10",
"v0.2.9",
"v0.2.8",
"v0.2.7",
"v0.2.6",
"v0.2.5",
"v0.2.4",
"v0.2.3",
"v0.2.2",
"v0.2.1",
"v0.2.0",
"v0.1.32",
"v0.1.31",
"v0.1.30",
"v0.1.29",
"v0.1.28",
"v0.1.27",
"v0.1.26",
"v0.1.25",
"v0.1.24",
"v0.1.23",
"v0.1.22",
"v0.1.21",
"v0.1.20",
"v0.1.19",
"v0.1.18",
"v0.1.17",
"v0.1.16",
"v0.1.15",
"v0.1.14",
"v0.1.13",
"v0.1.12",
"v0.1.11",
"v0.1.10",
"v0.1.9",
"v0.1.8",
"v0.1.7",
"v0.1.6",
"v0.1.6.rc0",
"v0.1.5",
"v0.1.4",
"v0.1.3",
"v0.1.2",
"v0.1.1",
"v0.1.0",
"v0.1.0.rc2",
"v0.1.0.rc1",
"v0.0.2",
"v0.0.1a28",
"v0.0.1a27",
"v0.0.1a26",
"v0.0.1a25",
"v0.0.1a24",
"v0.0.1a23",
"v0.0.1a22",
"v0.0.1a21",
"v0.0.1a20",
"v0.0.1a19",
"v0.0.1a18",
"v0.0.1a17",
"v0.0.1a16",
"v0.0.1a15",
"v0.0.1a14",
"v0.0.1a13",
"v0.0.1a12",
"v0.0.1a11",
"v0.0.1a10",
"v0.0.1a9",
"v0.0.1a8",
"v0.0.1a7",
"v0.0.1a6",
"v0.0.1a5",
"0.0.1a5",
"v0.0.1a4",
"v0.0.1a3",
"v0.0.1a2",
"v0.0.1a1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54071.json"
}
}
],
"modified": "2026-10-28T02:30:22.135055442Z",
"provider": "osv",
"references": [
"https://github.com/funstory-ai/BabelDOC/blob/main/docs/release-notes/v0.6.3.md",
"https://github.com/funstory-ai/BabelDOC/releases/tag/v0.6.3",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54071.json",
"https://github.com/funstory-ai/BabelDOC/security/advisories/GHSA-m8gf-v64p-gfmg",
"https://nvd.nist.gov/vuln/detail/CVE-2026-54071",
"https://github.com/funstory-ai/BabelDOC/commit/28f784ca6b437dbba040bfd9c67110373cd0924b"
],
"provider_metadata": {
"cwe_ids": [
"CWE-502"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54071.json"
}
},
"related_cves": [
{
"value": "CVE-2026-54071",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 488216,
"published_at": "2026-08-21T18:55:42.248+00:00"
}