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CVE Record

CVE-2026-3056: Seraphinite Accelerator <= 2.28.14 - Missing Authorization to Authenticated (Subscriber+) Log Clearing

The Seraphinite Accelerator plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `seraph_accel_api` AJAX action with `fn=LogClear` in all versions up to, and including, 2.28.14. This makes it possible for authenticated attackers, with Subscriber-level access and above, to clear the plugin's debug/operational logs.

MediumCVSS 4.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2026-3056 affects the Seraphinite Accelerator WordPress plugin through version 2.28.14. A logged-in user with Subscriber-level access or higher can clear the plugin’s debug or operational logs. This does not indicate data theft or site takeover, but it can reduce visibility and hinder incident review or troubleshooting.

Executive priority

Treat as a moderate WordPress plugin governance issue. Prioritize sites with many low-privilege users, open registration, or compliance needs for operational logging. It is not described as a takeover vulnerability, but it can weaken auditability.

Technical view

The issue is a missing authorization check, CWE-862, on the seraph_accel_api AJAX action when called with fn=LogClear. The CVSS 3.1 score is 4.3: network-accessible, low complexity, low privileges required, no user interaction, and limited integrity impact. A referenced WordPress changeset indicates code-level attention, but the source bundle does not name a fixed release.

Likely exposure

Exposure is limited to WordPress sites running Seraphinite Accelerator versions up to and including 2.28.14 where untrusted users can authenticate as Subscriber or above.

Exploitation context

No CISA KEV listing is provided, and the supplied sources do not state active exploitation. Practical abuse requires a valid WordPress account, then could remove plugin logs to obscure activity or disrupt operational review.

Researcher notes

The source bundle identifies affected versions through 2.28.14 and references the vulnerable AJAX path and related WordPress Trac changeset. It does not provide exploit evidence or a clearly named fixed version. Avoid assuming broader impact beyond clearing plugin debug or operational logs.

Mitigation direction

  • Inventory WordPress sites using Seraphinite Accelerator.
  • Check whether installed versions are 2.28.14 or earlier.
  • Review vendor or WordPress plugin guidance for the fixed release.
  • Update the plugin if a newer fixed version is available.
  • Limit Subscriber-level access to trusted users where possible.

Validation and detection

  • Confirm the plugin version on each WordPress site.
  • Review whether public registration or broad Subscriber access is enabled.
  • Verify plugin log-clearing functionality requires appropriate administrative capability.
  • Check plugin change history around changeset 3468084.
  • Monitor for unexpected clearing of Seraphinite Accelerator logs.
Prepared
Confidence
high
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · medium confidence lookup

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.

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cve · low confidence lookup

CVE-2026-3056 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
4.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N2.81.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.3Medium
CVSS 3.1 vector shape for CVE-2026-3056Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
seraphinitesoftSeraphinite Accelerator0unaffected
Weakness

CWE details

CWE-862

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-862 · source CWE mapping

Missing Authorization

Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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