CVE-2026-33894
Description
Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, RSASSA PKCS#1 v1.5 signature verification accepts forged signatures for low public exponent keys (e=3). Attackers can forge signatures by stuffing “garbage” bytes within the ASN structure in order to construct a signature that passes verification, enabling Bleichenbacher style forgery. This issue is similar to CVE-2022-24771, but adds bytes in an addition field within the ASN structure, rather than outside of it. Additionally, forge does not validate that signatures include a minimum of 8 bytes of padding as defined by the specification, providing attackers additional space to construct Bleichenbacher forgeries. Version 1.4.0 patches the issue.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
node-forgenpm | < 1.4.0 | 1.4.0 |
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
7- datatracker.ietf.org/doc/html/rfc2313nvdThird Party AdvisoryWEB
- github.com/advisories/GHSA-ppp5-5v6c-4jwpghsaADVISORY
- github.com/digitalbazaar/forge/security/advisories/GHSA-ppp5-5v6c-4jwpnvdVendor AdvisoryWEB
- mailarchive.ietf.org/arch/msg/openpgp/5rnE9ZRN1AokBVj3VqblGlP63QEnvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-33894ghsaADVISORY
- www.rfc-editor.org/rfc/rfc8017.htmlnvdThird Party AdvisoryWEB
- github.com/digitalbazaar/forge/security/advisories/GHSA-cfm4-qjh2-4765ghsaWEB
News mentions
0No linked articles in our index yet.