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Advisory record · GHSA-7wch-p9px-956x

Forge: Regular expression denial of service in PEM decoding (pem.decode)

CVSS 7.5 HighEPSS 0.0056 · 46th percentile

Published by the GitHub Advisory Database at 30 Oct 2026, 23:02 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
node-forgenpm<1.4.11.4.1
Identifiers
GHSA-7wch-p9px-956x · CVE-2026-118779
Weakness (CWE)
CWE-400 · CWE-1333
Tags
Published
30 Oct 2026
Updated
30 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Versions of the node-forge npm package before 1.4.1 are affected by a regular expression denial of service in its PEM decoding (pem.decode), which all PEM-parsing APIs use. A remote, unauthenticated attacker who can supply PEM text to an application, such as an uploaded certificate or key, can send a crafted input of a few tens of kilobytes to block the Node.js event loop for seconds to minutes. Upgrade to node-forge 1.4.1, which parses PEM messages and headers in linear time; the source notes that merely rejecting large PEM input only limits the delay.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0056, the 46th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 13:32 UTC First seen by agentprime
  2. 31 Oct 2026, 13:32 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.