Cleartext storage of sensitive information in https://github.com/brave/brave-core
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-312.
Summary
The implementation of Brave Desktop's privacy-preserving analytics system (P3A) between 1.1 and 1.18.35 logged the timestamp of when the user last opened an incognito window, including Tor windows. The intended behavior was to log the timestamp for incognito windows excluding Tor windows. Note that if a user has P3A enabled, the timestamp is not sent to Brave's server, but rather a value from:Used in last 24hUsed in last week but not 24hUsed in last 28 days but not weekEver used but not in last 28 daysNever usedThe privacy risk is low because a local attacker with disk access cannot tell if the timestamp corresponds to a Tor window or a non-Tor incognito window.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | https://github.com/brave/brave-core | v1.18.35 | — | No fix listed | CNA |
- https://github.com/brave/brave-core Vendor— Affected v1.18.35 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-8276
- 2026-10-03 Alias added: GHSA-v36p-6rf8-wx94
References
More Brave vulnerabilities
- TI-2022-23748 Brave Browser before 1.43.88 allowed a remote attacker to cause a denial of service in… CVSS 3.1MEDIUM 6.5
- TI-2022-23747 Brave Browser before 1.42.51 allowed a remote attacker to cause a denial of service via a… CVSS 3.1MEDIUM 6.5
- TI-2017-05997 Brave 0.12.4 has a Status Bar Obfuscation issue in which a redirection target is shown in… CVSS 3.1MEDIUM 5.3
- TI-2021-20894 In Brave Desktop 1.17 through 1.33 before 1.33.106, when CNAME-based adblocking and a… CVSS 3.1HIGH 7.5
- TI-2021-05777 Information disclosure in https://github.com/brave/brave-core CVSS 3.1MEDIUM 5.9
- TI-2022-23746 Brave Browser before 1.43.34 allowed a remote attacker to cause a denial of service via a… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2020-8276 · CVE Program
- CVE-2020-8276 · NVD
- FIRST EPSS
- GHSA-v36p-6rf8-wx94 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences