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CVE-2022-23651

19
FAUCET Score

CVE-2022-23651 is a key disclosure vulnerability affecting b2-sdk-python versions 1.14.0 and below, specifically when using the SqliteAccountInfo format on Linux and Mac. A local attacker can exploit a time-of-check-time-of-use (TOCTOU) race condition to read API keys and bucket mappings from a temporarily world-readable database file. This vulnerability has a CVSS score of 4.7 (MEDIUM), indicating a low-privilege local attacker with high attack complexity can achieve high confidentiality impact. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.14.0CPE matchmatch criteria
cpe:2.3:a:backblaze:b2_python_software_development_kit:*:*:*:*:*:linux:*:*
<= 1.14.0CPE matchmatch criteria
cpe:2.3:a:backblaze:b2_python_software_development_kit:*:*:*:*:*:mac:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.0
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
12.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 53rd percentile among its peer group of 1,297 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: b2sdkFixed in: 1.14.1

Vendor Advisories (1)

pipGHSA-p867-fxfr-ph2wmedium

b2-sdk-python TOCTOU application key disclosure

Feb 24, 2022

References

github.com / Backblaze/b2-sdk-python/commit/62476638986e5b6d7459aca5ef8ce220760226e0
PatchThird Party Advisory
github.com / Backblaze/b2-sdk-python/security/advisories/GHSA-p867-fxfr-ph2w
Third Party Advisory
pypi.org / project/b2sdk
Product