8.1

CVE-2018-20238: atlassian crowd Session Fixation

Modified
Published 13-02-2019Last modified 16-09-2024

Vulnerability summary

CVE-2018-20238 is a high (CVSS 8.1) Session Fixation vulnerability in atlassian crowd. EPSS estimates a 1.51% chance of exploitation in the next 30 days, higher than 74.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.1, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.1/10
010
High · v3.0 (NVD)
EPSS score
1.51%
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. 13-02-2019
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

Various rest resources in Atlassian Crowd before version 3.2.7 and from version 3.3.0 before version 3.3.4 allow remote attackers to authenticate using an expired user session via an insufficient session expiration vulnerability.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.51%

Chance of exploitation in the next 30 days

Percentile

75%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.51% 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, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Atlassian1 product
  • crowd≥ unspecified, < 3.2.7 | ≥ 3.3.0, < unspecified | ≥ unspecified, < 3.3.4 | < 3.2.7 | ≥ 3.3.0, < 3.3.4

1 vendor · 1 product

References

2 links