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CVE-2026-8727

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:56712e2375e74e172306ab89e1acee3fdc173bb63f2a4900e88060a438a9de6a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"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"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2839b7d160168c0a0a4b043a97221949e4f25edf92554af8a4fe729fb3a633b0 · sha256:3700c1f1114deab8… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"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…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2839b7d160168c0a0a4b043a97221949e4f25edf92554af8a4fe729fb3a633b0 · sha256:3700c1f1114deab8… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-502","description":"CWE-502 Deserialization of Untrusted Data","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2839b7d160168c0a0a4b043a97221949e4f25edf92554af8a4fe729fb3a633b0 · sha256:3700c1f1114deab8… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"tags":["vendor-advisory"],"url":"https://typo3.org/security/advisory/typo3-ext-sa-2026-008"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2839b7d160168c0a0a4b043a97221949e4f25edf92554af8a4fe729fb3a633b0 · sha256:3700c1f1114deab8… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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