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CVE-2026-124848

Incorrect default permissions on session transcripts and prompt history in Kiro CLI

Products / packages Amazon Kiro CLI

Published

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Severity and exploitation

Not in CISA KEV

KEV coverage does not rule out exploitation.

KEV checked 14/11/2026, 23:05:32 UTC
AMZN · CVSS:3.1 · 5.5
Assessment vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
AMZN · CVSS:4.0 · 6.8
Assessment vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
The headline uses the highest imported catalog score. Assessments can differ by source and CVSS version.

Severity

medium6.8

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Fix status not established

No structured fix or guidance is available here. Check the latest publisher advisory.

What this means

Kiro CLI versions before 2.27.0 on macOS and Linux have incorrect default file permissions, allowing other local users to read session transcripts and prompt history. The weakness is due to the CLI creating local session storage files with readable permissions for all local users. This may expose credentials or source code.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

Amazon · AMZN

Kiro CLI

1 range
AMZN version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

1.16.0 → before 2.27.0

custom versions

unaffected

unknown

Other versions: unaffected

Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

No structured fix or remediation guidance is available here. Check the full source description and vendor’s latest advisory for a patch or workaround; do not assume another version is safe.

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

Incorrect default file permissions in Kiro CLI (formerly Amazon Q Developer CLI) before version 2.27.0 on macOS and Linux might allow other local users on the same host to read a user's session transcripts and prompt history, including any credentials or source code they contain. The CLI created its local session storage files with permissions that made them readable by all local users.

To remediate this issue, users should upgrade to Kiro CLI version 2.27.0 or later and launch it once. Users who ran Amazon Q Developer CLI 1.16.0 through 1.19.x should also delete the ~/.aws/amazonq/.cli_bash_history file or restrict it to the owner.

References

2 sources
kiro.dev/changelog/cli/2-27/
PatchAMZN
aws.amazon.com/security/security-bulletins/2026-178-aws/
Vendor advisoryAMZN

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-124848

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-276 ↗

CWE-276 Incorrect default permissions

AMZN

Related →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

AMZN · platform conditions

Any condition may hold

Any condition may hold

Vulnerable product

cpe:2.3:a:amazon:kiro_cli:*:*:*:*:*:*:*:*

From (inclusive): 1.16.0

Before: 2.27.0

Applicability preview
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    "operator": "OR",
    "nodes": [
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        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:amazon:kiro_cli:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "1.16.0",
            "versionEndExcluding": "2.27.0"
          }
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Contributing organizations · 1
AMZN

Assigning organization

2026-11-10

Timeline

All times UTC

  1. Advisory published

    Publication date supplied by the source.

  2. Last imported by cve.new

    Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.