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Template injection in the publishing component of awslabs Virtual Engineering Workbench

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

8.8HighCNA
Exploited
No known exploitation
Fix
Fix or patch referenced
Who is exposed
Specific setups only

Do first: Check whether your setup matches what the bug needs. Affects all commits before c146486 (PR #31) Triggered by a crafted CloudFormation template body with template engine directives submitted through the product versioning API

Published
Last modified
Published
Not listed in CISA KEV
18/100 · provisional
Specific setups only
Fix
Fix or patch referenced
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

The publishing component of the awslabs Virtual Engineering Workbench, an Amazon tool for managing engineering environments, is affected by this vulnerability. A remote, authenticated attacker could exploit it by submitting a crafted template through the product versioning API to run arbitrary code, potentially accessing data and resources across all tenant projects.

Read the original description

Improper neutralization of special elements used in a template engine in the publishing component of Amazon Virtual Engineering Workbench (VEW) could allow a remote authenticated third party to run arbitrary code with the permissions of the publishing Lambda's IAM role. This could allow access to data and resources across all tenant projects. The code is reachable through a crafted CloudFormation template body containing template engine directives submitted through the product versioning API. To remediate this issue, users should redeploy from the latest version of awslabs/virtual-engineering-workbench.

What to do

  • Check whether your setup matches what the bug needs.

    Affects all commits before c146486 (PR #31) Triggered by a crafted CloudFormation template body with template engine directives submitted through the product versioning API
  • Apply the patch listed under Evidence.

  • Workaround: Limit which users can create or update product versions until redeployed

Timeline

  1. CVE published
  2. First seen by cve.now
  3. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  4. Record last updated

Affected versions

  • AWS virtual-engineering-workbench

    Version range not reported

Evidence 2

  1. Advisory
  2. Patch

Corrections

None so far.

Something wrong on this page? Report an error. Every fix is listed here.

FAQ

Questions about CVE-2026-119085

What does this mean?

A crafted CloudFormation template body containing template engine directives can make the product's publishing component run attacker-chosen code. The code then runs with the permissions of the publishing Lambda's IAM role, which can reach data and resources across all tenant projects.Source: aws.amazon.com

Am I affected, and how do I check?

The advisory says versions before commit c146486 (PR #31, merged 2026-05-04) are affected, and the product's version range list is empty. Check whether your deployment includes that commit, or whether the product versioning API accepts CloudFormation template bodies with template engine directives.Source: aws.amazon.com

What should I do about it?

Update to a build that includes commit c146486 (PR #31), which the advisory says addresses the issue. No separate patched version number is listed in the facts.Source: aws.amazon.com

Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data