Security readout for executives and security teams
Plain-English summary
A logged-in WordPress user with Author-level access or higher could upload files the Modula Image Gallery plugin should have rejected. On affected sites, this can place arbitrary files on the server and may lead to full site compromise.
Executive priority
Treat as a high-priority WordPress exposure, especially for multi-author sites. Patch promptly and review privileged content accounts, because successful abuse may enable server-side code execution.
Technical view
CVE-2024-12853 is a CWE-434 arbitrary file upload flaw in Modula Image Gallery zip upload handling. The source bundle attributes it to missing file type validation in versions up to and including 2.11.10, with CVSS 3.1 score 8.8.
Likely exposure
Exposure is likely limited to WordPress sites running Modula Image Gallery versions up to 2.11.10 where untrusted or compromised users have Author-level or higher access.
Exploitation context
The bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation requires authenticated WordPress access at Author level or above, but no user interaction is required after that access exists.
Researcher notes
Evidence supports missing file type validation in zip upload functionality, requiring Author+ privileges. The bundle does not provide exploit details, active exploitation confirmation, or complete remediation notes beyond the vulnerable version boundary and referenced code change.
Mitigation direction
- Update Modula Image Gallery to a vendor-supported version newer than 2.11.10.
- Review vendor guidance and the referenced WordPress plugin changeset.
- Restrict Author-level access to trusted users only.
- Temporarily disable zip upload workflows if update timing is delayed.
- Audit recently uploaded plugin media and server files for anomalies.
Validation and detection
- Inventory WordPress sites using Modula Image Gallery.
- Confirm installed plugin versions are not 2.11.10 or older.
- Review users with Author, Editor, Administrator, or equivalent roles.
- Check upload locations for unexpected executable or script files.
- Review logs for suspicious authenticated upload 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.
CWE-434: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program 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-2024-12853 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
SSVC decision data
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:L/UI:N/S:U/C:H/I:H/A:H2.85.9WordfenceVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelineWordfence
Disclosed
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ef86b1f2-d5aa-4e83-a792-5fa35734b3d3?source=cveCVE reference, Wordfence
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3218127%40modula-best-grid-gallery&new=3218127%40modula-best-grid-gallery&sfp_email=&sfph_mail=CVE reference, Wordfence
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.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.