Security readout for executives and security teams
Plain-English summary
CVE-2026-21429 is a low-severity access-control issue in Emlog 2.5.23. It concerns controls meant to prevent users from editing or deleting articles after publication. The known business impact is limited content integrity risk, not system takeover. Sources state no patched version was available at publication.
Executive priority
Treat as a low-priority remediation item unless Emlog supports regulated publishing, public communications, or workflows requiring strict post-publication change control.
Technical view
Emlog 2.5.23 is affected by CWE-862 Broken Access Control. The CVSS 4.0 score is 2.0, with network attack vector, low complexity, high privileges required, no user interaction, and low vulnerable-system integrity impact. No confidentiality or availability impact is listed.
Likely exposure
Exposure appears limited to organizations running Emlog version 2.5.23, especially where post-publication edit/delete restrictions are relied upon for workflow control or compliance.
Exploitation context
The CVE is not listed as CISA KEV in the provided data. The CVSS vector includes E:P, indicating proof-of-concept maturity, but the sources do not establish active exploitation.
Researcher notes
Evidence is limited to the CVE record and GitHub advisory metadata. The affected version is specifically 2.5.23. No fixed version is named in the provided sources, so remediation guidance should remain vendor-driven.
Mitigation direction
- Check the GitHub advisory and Emlog project for updated vendor guidance.
- If feasible, avoid relying solely on affected post-publication restrictions.
- Limit high-privilege user access to trusted administrators only.
- Monitor published article edits and deletions for unexpected changes.
- Plan upgrade or patch deployment when a fixed release is announced.
Validation and detection
- Inventory Emlog deployments and identify version 2.5.23.
- Confirm whether post-publication edit/delete controls are enabled.
- Review user roles with elevated privileges in affected sites.
- Audit content history for unexpected edits or deletions after publication.
- Track the GitHub advisory for patch status changes.
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-862: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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 lookupCVE-2026-21429 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
- Low
- CVSS
- 2 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
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:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
2LowVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/emlog/emlog/security/advisories/GHSA-jw5v-2g53-rx8wCVE reference · x_refsource_CONFIRM
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.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.