Security readout for executives and security teams
Plain-English summary
This issue lets an unauthenticated attacker who can reach a vulnerable Jira plugin read files from the server. The main business risk is sensitive data exposure from Jira infrastructure, not confirmed takeover or service disruption.
Executive priority
Prioritize remediation for internet-facing Jira servers and systems holding sensitive project, customer, or operational data. The vulnerability is high severity because no login is required, but available sources only support confidentiality impact and do not confirm active exploitation.
Technical view
CVE-2023-26256 is a CWE-22 path traversal flaw in STAGIL Navigation for Jira - Menu & Themes before 2.0.52. The CVSS 3.1 score is 7.5: network-reachable, low complexity, no privileges, no user interaction, high confidentiality impact.
Likely exposure
Exposure is limited to Jira environments running the STAGIL Navigation for Jira - Menu & Themes plugin before 2.0.52. Internet-accessible Jira instances have higher practical risk. The source bundle’s affected-product metadata is incomplete, so verify installed app names and versions directly.
Exploitation context
The CVE record describes unauthenticated file-system read through path traversal. The bundle does not cite CISA KEV listing or other evidence of active exploitation. Treat exploit status as unconfirmed, not absent.
Researcher notes
The public bundle identifies the vulnerable endpoint and parameter, CVSS vector, CWE-22 classification, and affected versions before 2.0.52. Affected CPE/vendor fields are not populated, so asset matching should rely on Jira plugin inventory rather than CPE automation alone.
Mitigation direction
- Update affected plugin installations to version 2.0.52 or later.
- Check Atlassian Marketplace and vendor guidance for current remediation details.
- Inventory Jira instances and remove unsupported vulnerable plugin versions.
- Limit external access to Jira where business requirements allow.
- Review incident response plans for possible file disclosure scenarios.
Validation and detection
- Confirm whether the STAGIL Navigation plugin is installed on each Jira instance.
- Record installed plugin versions and flag anything before 2.0.52.
- Review Jira and web access logs for suspicious unauthenticated requests to the documented endpoint.
- Assess whether Jira is reachable from the internet or untrusted networks.
- Document remediation status for each affected Jira environment.
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.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-26256 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
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
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.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.