- Top reward
- Not published
- Top severity paid
- Not published
- Assets in scope
- 1
- Public CVEs
- 4
- Last change
- No changes yet
At a glance
What to know before you start testing.
- Pays cash
- Amounts are not published; ask before you invest time.
- Report as the policy says
- The policy page explains how.
- No safe harbor
- No promise about legal action.
Rewards
What the company's own policy page says it pays.
The policy page has no reward table. Here is what it says, in its own words.
- Pays cash
-
Yes
let’s work together to resolve it and reward you for your discovery
Summarised with AI from the company's policy, read 12 Nov 2026, and checked word for word against it. Read the original
Scope
1 asset you may test.
Domains 1
- backblaze.com
Changes
Tracked since 11 Nov 2026. Last checked 6 hours ago.
No changes yet. When the rewards or scope move, you will see it here and in the RSS feed.
Public CVEs
Published vulnerabilities in this vendor's products, from the NVD.
| CVE | Summary | Severity | Published |
|---|---|---|---|
| CVE-2022-23651 | b2-sdk-python is a python library to access cloud storage provided by backblaze. Linux and Mac releases of the SDK version 1.14.0 and below contain a key disclosure vulnerability that, in certain conditions, can be exploited by local attackers through a time-of-check-time-of-use (TOCTOU) race condition. SDK users of the SqliteAccountInfo format are vulnerable while users of the InMemoryAccountInfo | Medium 4.7 | 23 Feb 2022 |
| CVE-2022-23653 | B2 Command Line Tool is the official command line tool for the backblaze cloud storage service. Linux and Mac releases of the B2 command-line tool version 3.2.0 and below contain a key disclosure vulnerability that, in certain conditions, can be exploited by local attackers through a time-of-check-time-of-use (TOCTOU) race condition. The command line tool saves API keys (and bucket name-to-id mapp | Medium 4.7 | 23 Feb 2022 |
| CVE-2020-8290 | Backblaze for Windows and Backblaze for macOS before 7.0.0.439 suffer from improper privilege management in `bztransmit` helper due to lack of permission handling and validation before creation of client update directories allowing for local escalation of privilege via rogue client update binary. | High 7.8 | 27 Dec 2020 |
| CVE-2020-8289 | Backblaze for Windows before 7.0.1.433 and Backblaze for macOS before 7.0.1.434 suffer from improper certificate validation in `bztransmit` helper due to hardcoded whitelist of strings in URLs where validation is disabled leading to possible remote code execution via client update functionality. | High 7.8 | 27 Dec 2020 |