Security readout for executives and security teams
Plain-English summary
A WordPress plugin, Activity Log for WordPress, can expose sensitive log contents to logged-in low-privilege users. A Subscriber account may be able to view information recorded in logs, potentially including higher-privilege passwords if such data was logged. This is an internal-account confidentiality risk, not a confirmed public remote takeover.
Executive priority
Treat as a near-term fix for WordPress sites with user accounts. It is not documented as actively exploited, but the potential exposure of administrator passwords or other sensitive log data makes delayed remediation risky, especially on externally facing or registration-enabled sites.
Technical view
CVE-2026-1671 is a missing authorization check, CWE-862, in winter_activity_log_action() in Activity Log for WordPress through version 1.2.8. The CVSS 3.1 score is 6.5: network reachable, low complexity, requires low privileges, no user interaction, high confidentiality impact, no integrity or availability impact.
Likely exposure
Sites running Activity Log for WordPress version 1.2.8 or earlier are potentially exposed if untrusted or broadly assigned authenticated accounts exist, including Subscriber-level users. Exposure depends on what the plugin’s logs contain and whether sensitive values were recorded.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The vulnerability requires an authenticated WordPress user. Business risk increases on sites with open registration, many low-privilege users, or logs that may contain credentials or sensitive operational data.
Researcher notes
Primary evidence comes from the CVE description, Wordfence entry, and WordPress plugin Trac changeset. The bundled affected metadata is inconsistent, but the narrative states all versions up to and including 1.2.8. Do not assume exploitation in the wild from these sources alone.
Mitigation direction
- Update Activity Log for WordPress to a version newer than 1.2.8 when available.
- Review the WordPress plugin repository changeset and vendor guidance for the confirmed fix.
- Disable the plugin if you cannot update and low-privilege users are untrusted.
- Review and rotate any credentials that may have appeared in plugin logs.
- Limit Subscriber-level access to trusted users until remediation is complete.
Validation and detection
- Inventory WordPress sites for Activity Log for WordPress installations.
- Check whether installed versions are 1.2.8 or earlier.
- Identify sites with open registration or many low-privilege authenticated users.
- Review plugin logs for sensitive values that should not be retained.
- Confirm remediation by verifying the installed fixed plugin version.
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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-1671 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
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/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:L/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/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.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.