CVE-2017-18256 json
Brave Browser before 0.13.0 allows remote attackers to cause a denial of service (resource consumption) via a long alert() argument in Java…
published 2018-04-04 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-9387
- cvss
- 6.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.8%
- EPSS 4.8% chance of exploitation in 30 days, percentile 92%
- public exploits
- 1
- Exploit-DB
Summary
Brave Browser before 0.13.0 allows remote attackers to cause a denial of service (resource consumption) via a long alert() argument in JavaScript code, because window dialogs are mishandled.
Patch / fix
- brave brave_browser 0.13.0
Timeline
- Published
- First public exploit (EDB-44474)
Exploit prediction
4.84% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- EDB-44474 Brave Browser < 0.13.0 - 'long alert() argument' Denial of Service dos, 2018-04-17
- hackerone.com https://hackerone.com/reports/176066 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
References
-
exploit-db.com
/exploits/44474/
exploit, third-party-advisory, vdb-entry
-
hackerone.com
/reports/176066
exploit, third-party-advisory
Sources
- CVE List CVE-2017-18256
- NVD CVE-2017-18256
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.