# CVE-2026-125333: Forge HTTP ReDoS in response header parsing

Source: https://junglewise.ai/threats/cve-2026-125333-forge-also-called-node-forge-is-a-native-implementation-of  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-125333 · Severity: medium · CVSS 5.9 · Published 2026-11-10

Forge is a JavaScript library that implements Transport Layer Security and other cryptographic functions. When parsing HTTP responses from untrusted servers, the library can be forced to spend minutes processing a single malicious response header, blocking Node.js or browser operations. This denial-of-service attack requires connecting to the server through forge's HTTP module and has no impact on data confidentiality or integrity.

Technologies: [Digital Bazaar Forge](https://junglewise.ai/threats/technologies/forge), [node-forge (npm)](https://junglewise.ai/threats/technologies/node-forge). Vendors: [Digital Bazaar](https://junglewise.ai/threats/vendors/digital-bazaar), [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is CVE-2026-125333 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-125333 being exploited in the wild.

**How severe is CVE-2026-125333?** Medium severity, with a CVSS score of 5.9, published 10 November 2026.

**Which products and versions are affected?** Digital Bazaar Forge 0.1.2 through 1.4.2; node-forge (npm) >= 0.1.2, <= 1.4.2, SEMVER:introduced=0.1.2,fixed=1.4.3.

**Is there a fix for CVE-2026-125333?** Yes. node-forge (npm): upgrade to 1.4.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-125333 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-125333?** Check whether you run Digital Bazaar Forge or node-forge (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- node-forge (npm): upgrade to 1.4.3 or later

  ```sh
  npm install node-forge@1.4.3
  ```


## Technical details

The vulnerability is a ReDoS (Regular Expression Denial of Service) in the _trimString() function used by forge.http to remove trailing whitespace from response header and cookie values. The regex `/\s*$/` exhibits quadratic time complexity when processing a long run of whitespace followed by a non-whitespace character. An attacker controlling a server or intercepting network traffic can cause readHeader() or getCookies() to repeatedly scan input and block the event loop; this only affects applications using forge.http with a socket pool to communicate with untrusted servers.

## Affected products

- Digital Bazaar Forge 0.1.2 through 1.4.2

## Identifiers

- CVE-2026-125333
- GHSA-6cv4-p8m7-4r25

## Timeline

- 2026-11-10: advisory
- 2026-11-04: patched

## References

- [https://github.com/digitalbazaar/forge/commit/326a4d0903ee46358bc849a5c3fd96d9c21489bd](https://github.com/digitalbazaar/forge/commit/326a4d0903ee46358bc849a5c3fd96d9c21489bd)
- [https://github.com/digitalbazaar/forge/pull/1169](https://github.com/digitalbazaar/forge/pull/1169)

## Related threats

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