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VulnerabilityPublished Updated

CVE-2026-106444: Ruby handlebars assets · Handlebars provides the power necessary to let users build semantic templates

Affects ruby-handlebars-assetsSource GCVE Database

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Authoritative record:CVE-2026-106444· Medium 4.7

Not known to be exploited · CVSS 4.7 Medium · fixed in 4.7.10 : update ruby-handlebars-assets when convenient.

Data as of 9 Nov 2026, 13:53 UTC

CVSS 3.1 base score
4.7Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 4.7.10
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10node-handlebarspkg:deb/ubuntu/node-handlebars?arch=source&distro=stonkingOther threatsAffected
  • =3:4.7.7+~4.1.0-1
  • =3:4.7.9-5
Fixed in–
Ubuntu 26.04 LTSnode-handlebarspkg:deb/ubuntu/node-handlebars?arch=source&distro=resoluteOther threatsAffected
  • =3:4.7.7+~4.1.0-1
Fixed in–
Ubuntu 24.04 LTSnode-handlebarspkg:deb/ubuntu/node-handlebars?arch=source&distro=nobleOther threatsAffected
  • =3:4.7.7+~4.1.0-1
Fixed in–
Ubuntu 24.04 LTSruby-handlebars-assetspkg:deb/ubuntu/ruby-handlebars-assets?arch=source&distro=nobleOther threatsAffected
  • =2:0.23.9+dfsg-1
Fixed in–
Ubuntu 22.04 LTSnode-handlebarspkg:deb/ubuntu/node-handlebars?arch=source&distro=jammyOther threatsAffected
  • =3:4.7.6+~4.1.0-2
  • =3:4.7.7+~4.1.0-1
Fixed in–
Ubuntu 20.04 LTSnode-handlebarspkg:deb/ubuntu/node-handlebars?arch=source&distro=focalOther threatsAffected
  • =3:4.1.0-1
  • =3:4.5.3-1
  • =3:4.7.2-1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade ruby-handlebars-assets to version 4.7.10 or later, where this vulnerability is fixed. Avoid embedding precompiled templates containing attacker-controlled content directly inside inline script elements. Using server-side rendering or serving precompiled templates as external JavaScript files is not affected by this issue.

Description

A vulnerability in ruby-handlebars-assets affects versions including 4.0.0 through 4.7.9, where the Handlebars.precompile() function improperly escapes sequences that terminate an enclosing HTML script element. This can allow an attacker to inject and execute arbitrary markup if attacker-controlled template text is precompiled and embedded directly in an inline script element. The issue is fixed in version 4.7.10.

References

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