Security readout for executives and security teams
Plain-English summary
This flaw affected Jira Server and Jira Data Center before 8.16.0. A remote attacker could bypass CSRF protection if they persuaded a user to retry a crafted request. Business risk depends on the fooled user’s Jira permissions and what action the replayed request performs.
Executive priority
Treat this as a timely Jira maintenance issue, especially for internet-accessible or high-use Jira environments. It is below emergency priority without evidence of active exploitation, but delayed patching leaves sensitive workflows dependent on user vigilance.
Technical view
CVE-2021-39124 is a CSRF protection bypass in Jira’s CSRF failure retry feature. The vulnerable retry behavior could allow replay of a crafted request after user interaction. The source bundle identifies affected versions only as Jira Server/Data Center before 8.16.0 and provides no CVSS score.
Likely exposure
Organizations running Atlassian Jira Server or Jira Data Center versions earlier than 8.16.0 are potentially exposed. Cloud products are not identified in the provided sources. Exposure is more relevant where authenticated users can perform sensitive Jira actions.
Exploitation context
The provided sources do not show KEV listing or confirmed active exploitation. Exploitation requires tricking a user into retrying a request, so this is not described as unauthenticated direct compromise. Impact depends on user privileges and request target.
Researcher notes
Evidence is limited. The bundle names the vulnerable feature and fixed version boundary but does not include CVSS, CWE, detailed affected version ranges, exploit maturity, or granular remediation notes. Do not infer broader Atlassian product exposure from these sources.
Mitigation direction
- Upgrade Jira Server or Data Center to version 8.16.0 or later.
- Review Atlassian issue JRASERVER-72761 for vendor-specific guidance.
- Prioritize instances reachable by broad user populations or external networks.
- Reduce unnecessary Jira exposure while upgrade planning is completed.
Validation and detection
- Inventory Jira Server and Data Center versions across production and non-production systems.
- Confirm no running instance is below version 8.16.0.
- Review change history for sensitive actions around reported suspicious user interactions.
- Validate CSRF protections after upgrade using approved internal security testing.
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-2021-39124 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://jira.atlassian.com/browse/JRASERVER-72761CVE 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.