Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-105743

CVE-2026-105743MEDIUM

docling-project docling — Docling: SSRF guard bypass in remote resource fetching (DNS rebinding / multi-record resolution; no IP validation in HTML render mode)

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  C  L  N  N    5.8   .0019    8.1     —

AFFECTED
  Product       Versions                Fixed
  docling       >= 2.91.0, < 2.132.0 –  —
  docling-slim  >= 2.91.0, < 2.132.0 –  —

TIMELINE
  Oct 5   Reserved by GitHub_M
  Oct 5   Published (CNA: GitHub_M)
  Oct 8   RESCORED — CVE-2026-105743 (docling-project docling). CVSS 4 → 5.8 (NVD).

CWE-367, CWE-918 · CNA: GitHub_M · CVSS v3.1 · 4 references · NVD status: Analyzed

Description

Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.91.0 until 2.132.0, validate_url_safety in docling/backend/utils/image_resource_loader.py validates a hostname with a single IPv4 lookup and then allows the HTTP client to resolve and parse the original URL again, permitting DNS rebinding, mixed public and internal address records, and backslash authority parser disagreement to reach internal services. HTMLBackendOptions(render_page=True) also allows HTTP and HTTPS browser requests without validating their resolved destination. Exploitation requires remote fetching to be enabled, and response content is exposed only when it is decoded as an image or passively rendered in a page screenshot. This issue is fixed in 2.132.0.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
October 5, 2026	Reserved	Reserved by GitHub_M
October 5, 2026	Published	Published (CNA: GitHub_M)
October 8, 2026	RESCORED	RESCORED — CVE-2026-105743 (docling-project docling). CVSS 4 → 5.8 (NVD).

Affected

Affected products and packages — 2 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
docling-project	docling	—	>= 2.91.0, < 2.132.0	—
docling-project	docling-slim	—	>= 2.91.0, < 2.132.0	—

Weaknesses

CWE-367 · CWE-918

References (4)

https://github.com/docling-project/docling/commit/5e469137f275ffc443306a30d12a3a45bceb80fb [Patch]
https://github.com/docling-project/docling/pull/4420 [Issue Tracking, Patch]
https://github.com/docling-project/docling/releases/tag/v2.132.0 [Release Notes]
https://github.com/docling-project/docling/security/advisories/GHSA-pc36-qwjq-x68c [Patch, Vendor Advisory]

Authoritative record: CVE-2026-105743 at cve.org

Vendors: docling-project

Weaknesses: CWE-367 · CWE-918

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-105743 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.