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CVE-2017-18105

26
FAUCET Score

CVE-2017-18105 is a session fixation vulnerability affecting Atlassian Crowd versions prior to 3.0.2 and 3.1.0 through 3.1.1. An attacker who obtains a user's JSESSIONID cookie can leverage this to gain unauthorized access to certain built-in and third-party REST resources. This vulnerability carries a high CVSS score of 8.1, indicating a severe risk due to its network-based attack vector, high impact on confidentiality, integrity, and availability, and low attack complexity. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.0.2CPE matchmatch criteria
cpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*
>= 3.1.0, < 3.1.1CPE matchmatch criteria
cpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*
< 3.1.1CPE match
cpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.43%
Probability of exploitation in next 30 days
EPSS Percentile
70.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0143 is in the 29th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jira.atlassian.com / browse/CWD-5072
Issue TrackingVendor Advisory