CVE-2026-5711 (GCVE-0-2026-5711)
Vulnerability from cvelistv5
Published
2026-04-08 21:25
Modified
2026-04-09 16:16
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
The Post Blocks & Tools plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sliderStyle' block attribute in the Posts Slider block in all versions up to, and including, 1.3.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| pubudu-malalasekara | Post Blocks & Tools |
Version: 0 ≤ 1.3.0 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-5711",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-09T14:50:08.056108Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-09T16:16:44.877Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Post Blocks \u0026 Tools",
"vendor": "pubudu-malalasekara",
"versions": [
{
"lessThanOrEqual": "1.3.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Athiwat Tiprasaharn"
}
],
"descriptions": [
{
"lang": "en",
"value": "The Post Blocks \u0026 Tools plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027sliderStyle\u0027 block attribute in the Posts Slider block in all versions up to, and including, 1.3.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-08T21:25:26.850Z",
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
},
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/aeada6dc-0851-45e8-ada9-ff0427b7f17a?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/bnm-blocks/tags/1.3.0/src/blocks/posts/slider/view.php#L237"
},
{
"url": "https://plugins.trac.wordpress.org/browser/bnm-blocks/trunk/src/blocks/posts/slider/view.php#L237"
},
{
"url": "https://plugins.trac.wordpress.org/browser/bnm-blocks/tags/1.3.1/src/blocks/posts/slider/view.php"
},
{
"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3500959%40bnm-blocks%2Ftrunk\u0026old=3456918%40bnm-blocks%2Ftrunk\u0026sfp_email=\u0026sfph_mail="
}
],
"timeline": [
{
"lang": "en",
"time": "2026-04-06T17:06:18.000Z",
"value": "Vendor Notified"
},
{
"lang": "en",
"time": "2026-04-08T09:11:09.000Z",
"value": "Disclosed"
}
],
"title": "Post Blocks \u0026 Tools \u003c= 1.3.0 - Authenticated (Author+) Stored Cross-Site Scripting via \u0027sliderStyle\u0027 Block Attribute"
}
},
"cveMetadata": {
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"assignerShortName": "Wordfence",
"cveId": "CVE-2026-5711",
"datePublished": "2026-04-08T21:25:26.850Z",
"dateReserved": "2026-04-06T16:50:02.968Z",
"dateUpdated": "2026-04-09T16:16:44.877Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-5711\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-09T14:50:08.056108Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-09T14:50:11.463Z\"}}], \"cna\": {\"title\": \"Post Blocks \u0026 Tools \u003c= 1.3.0 - Authenticated (Author+) Stored Cross-Site Scripting via \u0027sliderStyle\u0027 Block Attribute\", \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Athiwat Tiprasaharn\"}], \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 6.4, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N\"}}], \"affected\": [{\"vendor\": \"pubudu-malalasekara\", \"product\": \"Post Blocks \u0026 Tools\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"1.3.0\"}], \"defaultStatus\": \"unaffected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-04-06T17:06:18.000Z\", \"value\": \"Vendor Notified\"}, {\"lang\": \"en\", \"time\": \"2026-04-08T09:11:09.000Z\", \"value\": \"Disclosed\"}], \"references\": [{\"url\": \"https://www.wordfence.com/threat-intel/vulnerabilities/id/aeada6dc-0851-45e8-ada9-ff0427b7f17a?source=cve\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/bnm-blocks/tags/1.3.0/src/blocks/posts/slider/view.php#L237\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/bnm-blocks/trunk/src/blocks/posts/slider/view.php#L237\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/bnm-blocks/tags/1.3.1/src/blocks/posts/slider/view.php\"}, {\"url\": \"https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3500959%40bnm-blocks%2Ftrunk\u0026old=3456918%40bnm-blocks%2Ftrunk\u0026sfp_email=\u0026sfph_mail=\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"The Post Blocks \u0026 Tools plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027sliderStyle\u0027 block attribute in the Posts Slider block in all versions up to, and including, 1.3.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"b15e7b5b-3da4-40ae-a43c-f7aa60e62599\", \"shortName\": \"Wordfence\", \"dateUpdated\": \"2026-04-08T21:25:26.850Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-5711\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-09T16:16:44.877Z\", \"dateReserved\": \"2026-04-06T16:50:02.968Z\", \"assignerOrgId\": \"b15e7b5b-3da4-40ae-a43c-f7aa60e62599\", \"datePublished\": \"2026-04-08T21:25:26.850Z\", \"assignerShortName\": \"Wordfence\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…