CVE-2026-119191: forge DoS — Exploit & Fix

Description

Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used asn1.fromDer(), BIT STRING decoding, maxDepth to process the relevant input or security decision. node-forge decoded ASN.1 stored inside BIT STRING values without consistently applying the configured maxDepth limit and recursively retained copies at each nesting level. Crafted DER containing nested BIT STRINGs could cause excessive recursion, CPU use, and quadratic memory consumption during asn1.fromDer(). This issue is fixed in version 1.4.1.

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CVSS v3.1 Score

7.5

HIGH

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

EPSS — Exploit Prediction

0.0043

Probability of exploitation

0.38%

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-400 Uncontrolled Resource Consumption

CWE-674 CWE-674

Affected Products

Vendor	Product	Versions
digitalbazaar	forge	< 1.4.1

References

Advisories & Patches

https://github.com/digitalbazaar/forge/commit/24035c181f41885ea3ec7279e6c0fcf270b6ec4b https://github.com/digitalbazaar/forge/commit/523c8e74c28457daeff044230dce4a36313c5ab7 https://github.com/digitalbazaar/forge/security/advisories/GHSA-rhr8-3pm8-cq29

Exploits

https://github.com/digitalbazaar/forge/security/advisories/GHSA-rhr8-3pm8-cq29

Other References

https://github.com/digitalbazaar/forge/releases/tag/v1.4.1

Frequently Asked Questions

What is CVE-2026-119191? +

Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used asn1.fromDer(), BIT STRING decoding, maxDepth to process the relevant input or security decision. node-forge decoded ASN.1 stored inside BIT STRING values without consistently applying the configured maxDepth limit and recursively retained copies at each nesting level. Crafted DER containing nested BIT STRINGs could cause excessive recursion, CPU use, and quadratic memory consumption during asn1.fromDer(). This issue is fixed in version 1.4.1. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-119191? +

CVE-2026-119191 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0043, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-119191? +

CVE-2026-119191 affects products from digitalbazaar, specifically: forge. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-119191? +

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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