CVE-2021-43958 is a critical vulnerability affecting Atlassian Fisheye and Crucible versions prior to 4.8.9, allowing remote attackers to brute-force user login credentials. This is due to improper restriction of excess authentication attempts on various REST resources, bypassing maximum failed login limits and CAPTCHA requirements. With a CVSS score of 9.8 (CRITICAL), this vulnerability has a low attack complexity and no user interaction, potentially leading to full compromise of confidentiality, integrity, and availability. There is currently no public exploit code available, and it is not listed on the CISA KEV catalog, nor has it garnered significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.8.9CPE matchmatch criteria | cpe:2.3:a:atlassian:crucible:*:*:*:*:*:*:*:* | ||
< 4.8.9CPE matchmatch criteria | cpe:2.3:a:atlassian:fisheye:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.