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No exploitation reportedFix available

CVE-2026-105743

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

No exploitation reported by the sources we read.

  • Published2026-10-05
  • Fixed in2.132.0
  • WeaknessCWE-367 · CWE-918

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-10-0522:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-105743?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-105743?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Docling
BranchAffectedFixed in
2.x≥ 2.91.0, < 2.132.02.132.0
2.x≥ 2.92.0, < 2.132.02.132.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2026-105743 Red Hat Product Security7 known affected

    docling: docling: Server-Side Request Forgery via improper URL validation

    lightspeed-core/rag-tool-cpu-rhel9 as a component of Lightspeed Core · lightspeed-core/rag-tool-cuda-12.9-rhel9 as a component of Lightspeed Core · rhai-early-access/docling-sdk-cuda-rhel9 as a component of Red Hat OpenShift AI (RHOAI) · +4 more

Full record on NVD

Fix

  1. Update Docling to 2.132.0
  2. Workaround from the vendor Red Hat Product Security CVE-2026-105743 · 7 productsExploitation requires remote resource fetching to be enabled, which is disabled by default in docling. Deployments that process untrusted documents should keep remote fetching disabled (enable_remote_fetch=False, avoiding CLI options such as --html-image-fetch remote or all). Where remote fetching …
  3. No fix available, says the vendor Red Hat Product Security CVE-2026-105743 · 7 productsFix deferred

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2026-10-08
  • OpenCVESSVC decisionnone—
  • CNACVSS 3.14read 2026-10-23
  • NVDCVSS 3.15.8read 2026-10-23
  • CNAweakness (CWE)CWE-367, CWE-918read 2026-10-23
  • FIRST EPSSEPSS score0.2 %2026-10-22
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Published
2026-10-05
Last Modified
2026-10-08
NVD status
Analyzed

Frequently asked questions

What is CVE-2026-105743?

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.

Is CVE-2026-105743 actively exploited?

Active exploitation of CVE-2026-105743 has not been confirmed. Its EPSS score was 0.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-105743?

CVE-2026-105743 has a CVSS v3 base score of 5.8 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N.

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