7.5

CVE-2021-43957: atlassian crucible

Modified
Published 16-03-2022Last modified 04-10-2024

Vulnerability summary

CVE-2021-43957 is a high (CVSS 7.5) vulnerability in atlassian crucible. EPSS estimates a 1.29% chance of exploitation in the next 30 days, higher than 70.3% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
1.29%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 16-03-2022
    PublishedVulnerability first disclosed.
  2. 04-10-2024
    Last modifiedVulnerability information updated.

Description

Affected versions of Atlassian Fisheye & Crucible allowed remote attackers to browse local files via an Insecure Direct Object References (IDOR) vulnerability in the WEB-INF directory and bypass the fix for CVE-2020-29446 due to a lack of url decoding. The affected versions are before version 4.8.9.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.29%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.29% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Atlassian2 products
  • crucible≥ unspecified, < 4.8.9 | < 4.8.9
  • fisheye≥ unspecified, < 4.8.9 | < 4.8.9

1 vendor · 2 products

References

2 links