Security readout for executives and security teams
Plain-English summary
Older Mail.ru Calendar plugin versions for Atlassian Jira could allow cross-site scripting through the calendar Name field. If exploited, a user viewing affected calendar content could run attacker-controlled script in Jira. The source bundle does not provide CVSS, active exploitation evidence, or detailed vendor remediation beyond the fixed-version boundary.
Executive priority
Prioritize this as a targeted Jira plugin risk. It is not shown as actively exploited, but Jira is often business-critical and XSS can affect user sessions and trust boundaries.
Technical view
CVE-2016-10716 is an XSS issue in Mail.ru Calendar plugin versions before 2.5.0.61 for Atlassian Jira. The vulnerable input is the Name field in a Create Calendar action, associated with the MailRuCalendar.jspa#period/month URI. Public references identify version 2.4.2.50 as affected, but do not provide CVSS or CWE data.
Likely exposure
Exposure is likely limited to Atlassian Jira environments with the Mail.ru Calendar plugin installed at a version earlier than 2.5.0.61. Organizations without this plugin are not exposed based on the supplied sources.
Exploitation context
A public Packet Storm advisory exists, but the bundle does not show CISA KEV listing or other evidence of active exploitation. Treat exploit status as unconfirmed.
Researcher notes
The evidence is narrow: affected plugin, version boundary, input field, and URI are identified. CVSS, CWE, authentication requirements, affected Jira versions, and complete remediation notes are absent from the provided sources.
Mitigation direction
- Inventory Jira instances for the Mail.ru Calendar plugin.
- Upgrade affected plugin installations to 2.5.0.61 or later if available.
- Check Atlassian Marketplace and vendor guidance for supported remediation details.
- Restrict plugin access until patched if the plugin is business-critical but outdated.
Validation and detection
- Confirm installed plugin version on every Jira instance.
- Verify whether version is earlier than 2.5.0.61.
- Review Jira access paths using the Mail.ru Calendar create calendar workflow.
- Check application logs for unusual calendar creation activity.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2016-10716 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://marketplace.atlassian.com/plugins/ru.mail.jira.plugins.mailrucal/versionsCVE reference · x_refsource_MISC
- https://packetstormsecurity.com/files/137649/JIRA-Mail.ru-Calendar-2.4.2.50_JIRA6-Cross-Site-Scripting.htmlCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.