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Advisory record · GHSA-5rpf-x9jg-8j5p

Scriban Affected by Memory Exhaustion (OOM) via Unbounded String Generation (Denial of Service)

CVSS 5.3 Medium

Published by the GitHub Advisory Database at 19 Mar 2026, 21:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
scribanNuGet<6.6.06.6.0
Scriban.SignedNuGet<6.6.06.6.0
Identifiers
GHSA-5rpf-x9jg-8j5p
Weakness (CWE)
CWE-770
Tags
Published
19 Mar 2026
Updated
6 Jul 2026

Machine-written summary

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

Scriban versions before 6.6.0 are affected, along with the Scriban.Signed package, both of which are fixed in 6.6.0. The source says the default string output limit is unlimited, so a template supplied by an attacker can drive repeated string doubling until memory is exhausted and the host process crashes. Upgrade scriban and Scriban.Signed to 6.6.0 or later. The source does not list a workaround other than the upgrade.

Written 9 Nov 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
5.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 15:22 UTC First seen by agentprime
  2. 31 Oct 2026, 15:22 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.