GHSA-r3xg-rg9j-67fv

Suggest an improvement
Source
https://github.com/advisories/GHSA-r3xg-rg9j-67fv
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-r3xg-rg9j-67fv/GHSA-r3xg-rg9j-67fv.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-r3xg-rg9j-67fv
Aliases
Published
2026-06-03T21:13:32Z
Modified
2026-07-21T15:15:50Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Docling: Unsafe Archive Extraction and XML Parsing in METS-GBS Backend
Details

Impact

The METS-GBS backend's XML parsing and the input document format detection lacked security controls, enabling:

  • XML External Entity (XXE) attacks to read local files or cause denial of service
  • Decompression bombs (zip bombs) to exhaust memory and disk space
  • Unbounded archive extraction consuming system resources

An attacker could craft malicious METS-GBS archives that, when processed, could read sensitive files, exhaust system resources, or cause application crashes.

Patches

Fixed in version 2.91.0. The fix implements:

  • Secure XML parsing with resolve_entities=False, load_dtd=False, and no_network=True
  • Configurable limits: 300 MB total extraction size, 10 MB per file, 1000 member count
  • Cumulative size tracking across all extractions
  • Early termination when limits are exceeded
  • Secure format detection of METS-GBS tar archives with _detect_mets_gbs() method: maximum file size (10 MB per file), maximum member count (1000 members), and exception handling to gracefully fail when limits are exceeded

Workarounds

Avoid processing METS-GBS archives from untrusted sources. If necessary, pre-validate archives in an isolated environment with resource limits.

References

Database specific 
{
    "cwe_ids":  [
        "CWE-409",
        "CWE-611",
        "CWE-776"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-06-03T21:13:32Z",
    "nvd_published_at":  "2026-06-26T16:16:30Z",
    "severity":  "MODERATE"
}
References

Affected packages

PyPI / docling

Package

Name
docling
View open source insights on deps.dev
Purl
pkg:pypi/docling

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.45.0
Fixed
2.91.0

Affected versions

2.*
2.45.0
2.46.0
2.47.0
2.47.1
2.48.0
2.49.0
2.50.0
2.51.0
2.52.0
2.53.0
2.54.0
2.55.0
2.55.1
2.56.0
2.56.1
2.57.0
2.58.0
2.59.0
2.60.0
2.60.1
2.61.0
2.61.1
2.61.2
2.62.0
2.63.0
2.64.0
2.64.1
2.65.0
2.66.0
2.67.0
2.68.0
2.69.0
2.69.1
2.70.0
2.71.0
2.72.0
2.73.0
2.73.1
2.74.0
2.75.0
2.76.0
2.77.0
2.78.0
2.79.0
2.80.0
2.81.0
2.82.0
2.83.0
2.84.0
2.85.0
2.86.0
2.87.0
2.88.0
2.89.0
2.90.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-r3xg-rg9j-67fv/GHSA-r3xg-rg9j-67fv.json"