CVE-2026-105742: docling Credential Exposure

Description

Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.95.0 until 2.132.0, the HTML image resource loader in docling/backend/utils/image_resource_loader.py forwards headers configured through the HTMLBackendOptions.headers setting to every remote image URL named by an untrusted document when enable_remote_fetch=True and fetch_images=True. The loader does not restrict those credentials to the source document's origin, allowing requests that carry custom headers such as API keys and cookies to follow cross-origin redirects and expose the caller's configured credentials to a document author. The default configuration is not affected because remote fetching and configured headers are required. This issue is fixed in 2.132.0.

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CVSS v3.1 Score

3.7

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.11%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-201 CWE-201

CWE-522 CWE-522

Affected Products

Vendor	Product	Versions
docling	docling	2.95.0 — 2.132.0

References

Advisories & Patches

https://github.com/docling-project/docling/commit/5e469137f275ffc443306a30d12a3a45bceb80fb https://github.com/docling-project/docling/pull/4420 https://github.com/docling-project/docling/security/advisories/GHSA-p3fw-7699-7926 https://github.com/docling-project/docling/security/advisories/GHSA-p3fw-7699-7926

Exploits

https://github.com/docling-project/docling/security/advisories/GHSA-p3fw-7699-7926 https://github.com/docling-project/docling/security/advisories/GHSA-p3fw-7699-7926

Other References

https://github.com/docling-project/docling/releases/tag/v2.132.0

Frequently Asked Questions

What is CVE-2026-105742? +

Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.95.0 until 2.132.0, the HTML image resource loader in docling/backend/utils/image_resource_loader.py forwards headers configured through the HTMLBackendOptions.headers setting to every remote image URL named by an untrusted document when enable_remote_fetch=True and fetch_images=True. The loader does not restrict those credentials to the source document's origin, allowing requests that carry custom headers such as API keys and cookies to follow cross-origin redirects and expose the caller's configured credentials to a document author. The default configuration is not affected because remote fetching and configured headers are required. This issue is fixed in 2.132.0. It has a CVSS v3.1 base score of 3.7 (LOW).

How severe is CVE-2026-105742? +

CVE-2026-105742 has a CVSS v3.1 score of 3.7 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0022, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-105742? +

CVE-2026-105742 affects products from docling, specifically: docling. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-105742? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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