CVE-2015-8398

MEDIUMNVD 6.16.1—Elevated

6.1

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 v3: 6.1
EG Score: 6.1(medium)
EPSS: 66.9%
KEV: Not listed

Published

April 11, 2016

Last Modified

May 6, 2026

References (4)

cve@mitrehttp://www.securityfocus.com/archive/1/537232/100/0/threaded
cve@mitrehttps://www.exploit-db.com/exploits/39170/
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/537232/100/0/threaded
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/39170/

Data Freshness Timeline

(refreshed 8× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-26 13:41 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-39170
First seen Jan 5, 2016
Atlassian Confluence 5.2/5.8.14/5.8.15 - Multiple Vulnerabilities
Open source ↗

Frequently asked(5)

What is CVE-2015-8398?

CVE-2015-8398 is a medium vulnerability published on April 11, 2016. 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.

When was CVE-2015-8398 disclosed?

CVE-2015-8398 was first published in the National Vulnerability Database on April 11, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2015-8398 actively exploited?

CVE-2015-8398 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 66.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2015-8398?

CVE-2015-8398 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2015-8398?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-8398, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2015-8398

Explore →

Is Your Infrastructure Affected by CVE-2015-8398?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2015-8398

📅 Published

🔄 Last Modified

🔗 References (4)