CVE-2022-23651

Local application-key disclosure via delayed permission hardening

Published Feb 23, 2022 · Updated Apr 23, 2025

Key disclosure in Backblaze B2 Python SDK before 1.14.1 allows local users to read API keys through a file-creation race. SqliteAccountInfo creates its SQLite database with permissive access, writes credentials, and only afterward changes the file to owner-only mode. Exploitation requires a readable containing directory and winning the brief creation-to-chmod race; InMemoryAccountInfo users and Windows releases are unaffected.

CVSS severity4.7
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Key disclosure in Backblaze B2 Python SDK before 1.14.1 allows local users to read API keys through a file-creation race. SqliteAccountInfo creates its SQLite database with permissive access, writes credentials, and only afterward changes the file to owner-only mode. Exploitation requires a readable containing directory and winning the brief creation-to-chmod race; InMemoryAccountInfo users and Windows releases are unaffected.

The record

CVE
CVE-2022-23651
Published
Feb 23, 2022
Updated
Apr 23, 2025
Vendor
Backblaze
Product
B2 Python SDK
Classifications
CWE-276, CWE-367, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 23, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.14.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Backblaze · B2 Python SDKversion=< 1.14.1

Published CVSS scores

1.9NIST NVDAV:L/AC:M/Au:N/C:P/I:N/A:N
4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
CWE-367Time-of-check Time-of-use Race Condition
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo