SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2015-8398

Cross-site scripting (XSS) vulnerability in Atlassian Confluence before 5.8.17 allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to rest/prototype/1/session/check.

EXPLOITMEDIUM 6.1EPSS 2.05%

Does this matter?

A public exploit is published in Exploit-DB, so the technical barrier is gone even though the severity is medium and EPSS is 2.0%. Treat it as high on anything reachable from the internet.

Description

Cross-site scripting (XSS) vulnerability in Atlassian Confluence before 5.8.17 allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to rest/prototype/1/session/check.

CVSS 3.0
6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
2.05% probability · 81th percentile
Public exploits
1 in Exploit-DB · first 5 January 2016
CISA KEV
Not listed
Weakness
CWE-79
Affected
atlassian/confluence
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 2.05%26 October 202626 October 2026

EPSS 2.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-39170source ↗Atlassian Confluence 5.2/5.8.14/5.8.15 - Multiple Vulnerabilitiesxml · Sebastian Perezwebapps5 January 2016no

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.