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2 vulnerabilities found for EWWW Image Optimizer by Unknown
CVE-2026-91011 (GCVE-0-2026-91011)
Vulnerability from nvd – Published: 2026-09-17 06:00 – Updated: 2026-09-17 12:26
VLAI
EPSS
VEX
Title
EWWW Image Optimizer < 8.7.7 - Author+ Stored XSS via Image Class Attribute Backreference Expansion
Summary
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 stored in published content and executes in the browser of any user who later views the affected page.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 12:10 UTC
CWE
- CWE-79 Cross-Site Scripting (XSS)
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/334f14d5-f97b-4e… | exploitvdb-entrytechnical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | EWWW Image Optimizer |
Affected:
0 , < 8.7.7
(semver)
|
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"providerMetadata": {
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"cna": {
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"references": [
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"url": "https://wpscan.com/vulnerability/334f14d5-f97b-4ec5-9b42-bb0803ae1668/"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "EWWW Image Optimizer \u003c 8.7.7 - Author+ Stored XSS via Image Class Attribute Backreference Expansion",
"x_generator": {
"engine": "WPScan CVE Generator"
}
}
},
"cveMetadata": {
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"state": "PUBLISHED"
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CVE-2026-91011 (GCVE-0-2026-91011)
Vulnerability from cvelistv5 – Published: 2026-09-17 06:00 – Updated: 2026-09-17 12:26
VLAI
EPSS
VEX
Title
EWWW Image Optimizer < 8.7.7 - Author+ Stored XSS via Image Class Attribute Backreference Expansion
Summary
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 stored in published content and executes in the browser of any user who later views the affected page.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 12:10 UTC
CWE
- CWE-79 Cross-Site Scripting (XSS)
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/334f14d5-f97b-4e… | exploitvdb-entrytechnical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | EWWW Image Optimizer |
Affected:
0 , < 8.7.7
(semver)
|
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.8,
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
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},
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"options": [
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},
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},
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}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-17T12:10:43.512611Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
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{
"cweId": "CWE-79",
"description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-17T12:26:09.671Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "EWWW Image Optimizer",
"vendor": "Unknown",
"versions": [
{
"lessThan": "8.7.7",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
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},
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}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-79 Cross-Site Scripting (XSS)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-17T06:00:13.250Z",
"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"shortName": "WPScan"
},
"references": [
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"technical-description"
],
"url": "https://wpscan.com/vulnerability/334f14d5-f97b-4ec5-9b42-bb0803ae1668/"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "EWWW Image Optimizer \u003c 8.7.7 - Author+ Stored XSS via Image Class Attribute Backreference Expansion",
"x_generator": {
"engine": "WPScan CVE Generator"
}
}
},
"cveMetadata": {
"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"assignerShortName": "WPScan",
"cveId": "CVE-2026-91011",
"datePublished": "2026-09-17T06:00:13.250Z",
"dateReserved": "2026-09-14T16:12:49.896Z",
"dateUpdated": "2026-09-17T12:26:09.671Z",
"state": "PUBLISHED"
},
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