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VulnerabilityPublished

CVE-2026-111737: Speed Optimizer (WordPress plugin) · Cross-site Scripting

Affects Speed Optimizer (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 3.5 Low : upgrade to 7.8.5 when convenient.

Data as of 29 Oct 2026, 19:15 UTC

CVSS 3.1 base score
3.5Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.13.5
EPSS
0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 7.8.5
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade Speed Optimizer (WordPress plugin) to 7.8.5.

Affected software

ProductAffectedFixed in
Speed OptimizerAffected
  • <7.8.5
Fixed in
  • 7.8.5

AI-suggested

Upgrade Speed Optimizer to version 7.8.5 or later where this vulnerability is fixed. No other vendor advisory information is provided, so patching to the fixed version is the recommended remediation.

Description

The Speed Optimizer WordPress plugin before 7.8.5 does not sanitise or escape some of its settings before outputting them in the head of front-end pages, which could allow high-privilege users such as admins to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in a multisite setup).

References

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