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Dell Terraform Provider for PowerStore, versions prior to 1.3.1 , contains a vulnerability that may cause sensitive authentication data to…

Only affects Dell Terraform Provider for PowerStore before 1.3.1 when debug dumping is enabled via GOPOWERSTORE_DEBUG=true. Fixed in version 1.3.1 or later.

CVE-2026-91891EUVD-2026-123663

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

7.5HighCNA
Exploited
No known exploitation
Fix
Fixed in Version 1.3.1 or later
Who is exposed
Specific setups only

Do first: Check whether your setup matches what the bug needs. Dell Terraform Provider for PowerStore, versions prior to 1.3.1 Debug dumping enabled via GOPOWERSTORE_DEBUG=true, which is not a production setting

Published
Last modified
Reference
Last checked
20/100 · provisional
Specific setups only
None on Exploit-DB, Metasploit or GitHub

Summary

Dell Terraform Provider for PowerStore, prior to the fixed release, may insufficiently redact sensitive authentication data in its diagnostic logs. An unauthenticated attacker can exploit this remotely, without logging in, to read that exposed information.

Read the original description

Dell Terraform Provider for PowerStore, versions prior to 1.3.1 , contains a  vulnerability that may cause sensitive authentication data to be insufficiently redacted in diagnostic logs. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to information exposure.

Who should check

Teams running the Dell Terraform Provider for PowerStore at versions prior to 1.3.1, including those with GOPOWERSTORE_DEBUG debug dumping enabled

Read the source excerpt

“Dell Terraform Provider for PowerStore, versions prior to 1.3.1”

dell.com

cve.now Index

20Pcve.now Index 20 of 100 · methodology v3 · provisional
  • Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
  • Exposure12/25Specific setups only, reachable over the network without a login
  • Reach?/20Unknown. No tracked technology or package matched
  • Severity7.5/10CVSS 7.5
  • No patch0/5No signal

What would change the score

  • Would score about 70 if added to CISA KEV
  • Would score about 65 if CISA's SSVC rates exploitation active

What to do

  • Check whether your setup matches what the bug needs.

    Dell Terraform Provider for PowerStore, versions prior to 1.3.1 Debug dumping enabled via GOPOWERSTORE_DEBUG=true, which is not a production setting
  • Upgrade to a fixed version: Version 1.3.1 or later.

  • Workaround: Do not enable GOPOWERSTORE_DEBUG=true in production. If debug dumping must be enabled temporarily for troubleshooting, restrict access to the resulting log output and rotate the DELL-EMC-TOKEN afterward.

Check your systems with an agent

Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.

Check whether my systems are affected by CVE-2026-91891 (Dell Terraform Provider for PowerStore, versions prior to 1.3.1 , contains a vulnerability that may cause sensitive authentication data to…), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-91891 (entry last updated 2026-11-11):
Affected:
- Dell Terraform Provider for PowerStore: version range not reported
Fixed versions: Version 1.3.1 or later.
Conditions (all must be true for the bug to be hit):
- Dell Terraform Provider for PowerStore, versions prior to 1.3.1 (source: https://www.dell.com/support/kbdoc/en-in/000515434/dsa-2026-433-security-update-for-dell-terraform-provider-for-dell-storage-multiple-vulnerabilities)
- Debug dumping enabled via GOPOWERSTORE_DEBUG=true, which is not a production setting (source: https://www.dell.com/support/kbdoc/en-in/000515434/dsa-2026-433-security-update-for-dell-terraform-provider-for-dell-storage-multiple-vulnerabilities)
Setup: the bug needs a feature or setting that is off by default or uncommon. Check whether each asset has it on.
Attacker needs: network access, no login, no user action.
Workaround: Do not enable GOPOWERSTORE_DEBUG=true in production. If debug dumping must be enabled temporarily for troubleshooting, restrict access to the resulting log output and rotate the DELL-EMC-TOKEN afterward. (source: https://www.dell.com/support/kbdoc/en-in/000515434/dsa-2026-433-security-update-for-dell-terraform-provider-for-dell-storage-multiple-vulnerabilities)
CISA KEV: CVE-2026-91891 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-91891 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://www.dell.com/support/kbdoc/en-in/000515434/dsa-2026-433-security-update-for-dell-terraform-provider-for-dell-storage-multiple-vulnerabilities
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-91891
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-91891"}.

Timeline

  1. CVE published
  2. First seen by cve.now

Affected versions

  • Dell Terraform Provider for PowerStore

    Version range not reported

Evidence 3

Vendor advisory · 1

Establishes: Affected and fixed versions.

  1. Advisory

CVE record · 2

Establishes: The identifier and description.

  1. Record
  2. Record

Corrections

None so far.

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

Questions about CVE-2026-91891

Is CVE-2026-91891 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

What does this mean?

Sensitive authentication data may not be fully redacted in diagnostic logs, so it can appear in log output and be exposed.Source: dell.com

Am I affected, and how do I check?

Dell Terraform Provider for PowerStore versions prior to 1.3.1 are affected, and the issue relates to debug dumping enabled via GOPOWERSTORE_DEBUG=true. To check a setup, look at the provider version in use and whether GOPOWERSTORE_DEBUG is set to true.Source: dell.com

How do I fix CVE-2026-91891?

Upgrade to version 1.3.1 or later. Until then, do not enable GOPOWERSTORE_DEBUG=true in production.Source: dell.com