Security readout for executives and security teams
Plain-English summary
CVE-2018-13423 is a cross-site scripting issue in Omeka before 2.6.1 involving the tag add/edit form. If an organization runs an older Omeka site, a malicious tag value could affect users who interact with that admin workflow. The source bundle provides limited severity and precondition detail.
Executive priority
Treat this as a targeted maintenance priority if Omeka is present, not an internet-wide emergency based on the provided evidence. Upgrade affected installations promptly because admin-side XSS can undermine trust in site management workflows.
Technical view
The CVE identifies XSS in admin/themes/default/items/tag-form.php in Omeka before 2.6.1 when adding or editing a tag. The provided references point to an Omeka code commit and the 2.6.1 release. No CVSS, CWE, exploitability details, or affected CPEs are included in the bundle.
Likely exposure
Likely exposure is limited to Omeka deployments older than 2.6.1. The described vulnerable area is an admin tag form, so prioritize systems where staff or contributors can add or edit tags. The bundle does not define authentication requirements or deployment-specific exposure.
Exploitation context
The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation. Public evidence here is limited to the CVE description, an Omeka commit, and the Omeka 2.6.1 release reference.
Researcher notes
Evidence is sparse. The only described sink is tag-form.php during tag add/edit operations. Do not assume exploit maturity, unauthenticated reachability, or broader Omeka component impact without additional vendor or code review evidence.
Mitigation direction
- Identify any Omeka installations and record their running versions.
- Upgrade Omeka deployments older than 2.6.1 to a fixed supported version.
- Review vendor release notes and commit context before applying production changes.
- Restrict tag editing privileges to trusted users until remediation is complete.
Validation and detection
- Confirm Omeka version is 2.6.1 or later after remediation.
- Review admin tag workflows for unexpected script execution behavior.
- Check change management records for the referenced Omeka update.
- Look for historical tag content containing suspicious script-like values.
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-2018-13423 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://github.com/omeka/Omeka/commit/ba841892116544847d76d3838781c9708cb92221CVE reference · x_refsource_MISC
- https://github.com/omeka/Omeka/releases/tag/v2.6.1CVE 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.