Search
Find a vulnerability
Search criteria
2 vulnerabilities found for Extension "Site Crawler" by TYPO3
CVE-2026-8727 (GCVE-0-2026-8727)
Vulnerability from nvd – Published: 2026-05-19 09:16 – Updated: 2026-05-19 13:25
VLAI
EPSS
VEX
Title
Remote Code Execution in extension "Site Crawler" (crawler)
Summary
The Crawler extension passes the X-T3Crawler-Meta response header from crawled URLs directly to PHP's unserialize(). An attacker controlling a crawled endpoint can inject arbitrary serialized PHP objects, leading to Remote Code Execution on the TYPO3 server. Exploitation requires administrative privileges to configure a crawler-enabled page and trigger the crawl via a Scheduler task.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://typo3.org/security/advisory/typo3-ext-sa-… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TYPO3 | Extension "Site Crawler" |
Affected:
12.0.0 , < 12.0.11
(semver)
Affected: 0 , < 11.0.13 (semver) |
Date Public
2026-05-19 09:00
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-8727",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-19T13:25:27.312318Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-19T13:25:34.994Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://packagist.org/",
"defaultStatus": "unaffected",
"packageName": "tomasnorre/crawler",
"product": "Extension \"Site Crawler\"",
"repo": "https://github.com/tomasnorre/crawler",
"vendor": "TYPO3",
"versions": [
{
"lessThan": "12.0.11",
"status": "affected",
"version": "12.0.0",
"versionType": "semver"
},
{
"lessThan": "11.0.13",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Roman Hergenreder"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Tomas Norre Mikkelsen"
}
],
"datePublic": "2026-05-19T09:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "The Crawler extension passes the \u003ccode\u003eX-T3Crawler-Meta\u003c/code\u003e response header from crawled URLs directly to PHP\u0027s \u003ccode\u003eunserialize()\u003c/code\u003e. An attacker controlling a crawled endpoint can inject arbitrary serialized PHP objects, leading to Remote Code Execution on the TYPO3 server. Exploitation requires administrative privileges to configure a crawler-enabled page and trigger the crawl via a Scheduler task."
}
],
"value": "The Crawler extension passes the X-T3Crawler-Meta response header from crawled URLs directly to PHP\u0027s unserialize(). An attacker controlling a crawled endpoint can inject arbitrary serialized PHP objects, leading to Remote Code Execution on the TYPO3 server. Exploitation requires administrative privileges to configure a crawler-enabled page and trigger the crawl via a Scheduler task."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "HIGH",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "HIGH",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "LOW",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"userInteraction": "ACTIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-502",
"description": "CWE-502 Deserialization of Untrusted Data",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-19T09:16:33.677Z",
"orgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
"shortName": "TYPO3"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-008"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Remote Code Execution in extension \"Site Crawler\" (crawler)",
"x_generator": {
"engine": "Vulnogram 1.0.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
"assignerShortName": "TYPO3",
"cveId": "CVE-2026-8727",
"datePublished": "2026-05-19T09:16:33.677Z",
"dateReserved": "2026-05-16T09:55:33.916Z",
"dateUpdated": "2026-05-19T13:25:34.994Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-8727 (GCVE-0-2026-8727)
Vulnerability from cvelistv5 – Published: 2026-05-19 09:16 – Updated: 2026-05-19 13:25
VLAI
EPSS
VEX
Title
Remote Code Execution in extension "Site Crawler" (crawler)
Summary
The Crawler extension passes the X-T3Crawler-Meta response header from crawled URLs directly to PHP's unserialize(). An attacker controlling a crawled endpoint can inject arbitrary serialized PHP objects, leading to Remote Code Execution on the TYPO3 server. Exploitation requires administrative privileges to configure a crawler-enabled page and trigger the crawl via a Scheduler task.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://typo3.org/security/advisory/typo3-ext-sa-… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TYPO3 | Extension "Site Crawler" |
Affected:
12.0.0 , < 12.0.11
(semver)
Affected: 0 , < 11.0.13 (semver) |
Date Public
2026-05-19 09:00
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-8727",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-19T13:25:27.312318Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-19T13:25:34.994Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://packagist.org/",
"defaultStatus": "unaffected",
"packageName": "tomasnorre/crawler",
"product": "Extension \"Site Crawler\"",
"repo": "https://github.com/tomasnorre/crawler",
"vendor": "TYPO3",
"versions": [
{
"lessThan": "12.0.11",
"status": "affected",
"version": "12.0.0",
"versionType": "semver"
},
{
"lessThan": "11.0.13",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Roman Hergenreder"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Tomas Norre Mikkelsen"
}
],
"datePublic": "2026-05-19T09:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "The Crawler extension passes the \u003ccode\u003eX-T3Crawler-Meta\u003c/code\u003e response header from crawled URLs directly to PHP\u0027s \u003ccode\u003eunserialize()\u003c/code\u003e. An attacker controlling a crawled endpoint can inject arbitrary serialized PHP objects, leading to Remote Code Execution on the TYPO3 server. Exploitation requires administrative privileges to configure a crawler-enabled page and trigger the crawl via a Scheduler task."
}
],
"value": "The Crawler extension passes the X-T3Crawler-Meta response header from crawled URLs directly to PHP\u0027s unserialize(). An attacker controlling a crawled endpoint can inject arbitrary serialized PHP objects, leading to Remote Code Execution on the TYPO3 server. Exploitation requires administrative privileges to configure a crawler-enabled page and trigger the crawl via a Scheduler task."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "HIGH",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "HIGH",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "LOW",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"userInteraction": "ACTIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-502",
"description": "CWE-502 Deserialization of Untrusted Data",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-19T09:16:33.677Z",
"orgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
"shortName": "TYPO3"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-008"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Remote Code Execution in extension \"Site Crawler\" (crawler)",
"x_generator": {
"engine": "Vulnogram 1.0.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
"assignerShortName": "TYPO3",
"cveId": "CVE-2026-8727",
"datePublished": "2026-05-19T09:16:33.677Z",
"dateReserved": "2026-05-16T09:55:33.916Z",
"dateUpdated": "2026-05-19T13:25:34.994Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}