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PatchSiren cyber security CVE debrief

CVE-2016-6283 Atlassian CVE debrief

CVE-2016-6283 is a medium-severity cross-site scripting issue in Atlassian Confluence. Per the CVE description and NVD record, attackers could inject arbitrary web script or HTML through the newFileName parameter in the pages/doeditattachment.action flow on affected Confluence versions before 5.10.6.

Vendor
Atlassian
Product
Confluence
CVSS
MEDIUM 6.1
CISA KEV
Not listed in stored evidence
Original CVE published
2017-01-18
Original CVE updated
2026-05-13
Advisory published
2017-01-18
Advisory updated
2026-05-13

Who should care

Confluence administrators, application security teams, and any organization running Confluence 5.10.5 or earlier should care, especially if users can access attachment edit or rename workflows.

Technical summary

NVD classifies this as CWE-79 (cross-site scripting) with CVSS 3.0 vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. The affected product scope in the NVD CPE data is Atlassian Confluence versions up to 5.10.5. The issue is triggered through the newFileName parameter to pages/doeditattachment.action, enabling script or HTML injection that can execute in a victim's browser when the malicious content is rendered in the Confluence context.

Defensive priority

Medium

Recommended defensive actions

  • Upgrade Atlassian Confluence to 5.10.6 or later, as the CVE description states the issue affects versions before 5.10.6.
  • Review and harden any input validation and output encoding around attachment edit and rename functionality, including the newFileName parameter path.
  • Monitor Confluence logs and web access telemetry for unusual requests to pages/doeditattachment.action and related attachment-edit endpoints.
  • Treat browser-side protections such as WAF rules as compensating controls only; they should not replace the product update.

Evidence notes

This debrief is based on the official CVE/NVD corpus supplied here. The CVE description states the flaw is a cross-site scripting vulnerability in Atlassian Confluence before 5.10.6 involving the newFileName parameter to pages/doeditattachment.action. NVD lists CWE-79 and CVSS 3.0 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N, and the vulnerable CPE range ends at 5.10.5. NVD also references third-party advisories including Packet Storm, Full Disclosure, SecurityFocus, and Exploit-DB; those references are present as corroborating sources in the record.

Sources and references

Verified primary and authoritative sources

  • CVE-2016-6283 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2016-6283

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2016-6283 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2016-6283

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.