CVE-2026-91011Medium· 6.8▾ Sunlit

The EWWW Image Optimizer WordPress plugin before 8.7.7 does not properly escape image attribute values when it rewrites page output, allowing authenticated users with author-level access and above to inject arbitrary JavaScript that is s…

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score37/ 100 · Low

impact 37.4 · likelihood 0 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Sep 17, 2026

Updated

Sep 18, 2026

CVSS

6.8

Vendor

—

Product

EWWW Image Optimizer

CWE

CWE-79

Depth score

37 · Low

EPSS

0.24% · p15

Platforms

—

Source

NVD

Vector

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

CISA SSVC

decided 2026-09-17

Exploitation: none
Automatable: no
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Sep 18.

0.2% → 0.2%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

5 events · 1 day

Sep 17, 2026Published
Disclosed via NVD
Sep 17, 2026CVSS changed
— → 6.8
Sep 17, 2026Severity changed
none → medium
Sep 18, 2026Record revised
Last analysed / modified upstream
Sep 18, 2026EPSS first tracked
0.2%

CWE-79 #nvd #cve.org

Affected

ewww_image_optimizer < 8.7.7

Full technical detail▾

Overview

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

[email protected] — https://wpscan.com/vulnerability/334f14d5-f97b-4ec5-9b42-bb0803ae1668/

Change history

Field changes observed since this record was first indexed.

Sep 17, 2026CVSS — → 6.8
Sep 17, 2026Severity none → medium

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org

← Back to feed

CVE-2026-91011Medium· 6.8▾ Sunlit

The EWWW Image Optimizer WordPress plugin before 8.7.7 does not properly escape image attribute values when it rewrites page output, allowing authenticated users with author-level access and above to inject arbitrary JavaScript that is s…

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score37/ 100 · Low

impact 37.4 · likelihood 0 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Sep 17, 2026

Updated

Sep 18, 2026

CVSS

6.8

Vendor

—

Product

EWWW Image Optimizer

CWE

CWE-79

Depth score

37 · Low

EPSS

0.24% · p15

Platforms

—

Source

NVD

Vector

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

CISA SSVC

decided 2026-09-17

Exploitation: none
Automatable: no
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Sep 18.

0.2% → 0.2%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

5 events · 1 day

Sep 17, 2026Published
Disclosed via NVD
Sep 17, 2026CVSS changed
— → 6.8
Sep 17, 2026Severity changed
none → medium
Sep 18, 2026Record revised
Last analysed / modified upstream
Sep 18, 2026EPSS first tracked
0.2%

CWE-79 #nvd #cve.org

Affected

ewww_image_optimizer < 8.7.7

Full technical detail▾

Overview

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

[email protected] — https://wpscan.com/vulnerability/334f14d5-f97b-4ec5-9b42-bb0803ae1668/

Change history

Field changes observed since this record was first indexed.

Sep 17, 2026CVSS — → 6.8
Sep 17, 2026Severity none → medium

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org