Home→Vulnerabilities→CVE-2026-8727
Disclosed

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.

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Exploitation Probability (EPSS)

Low Priority
0.40%

The Exploit Prediction Scoring System (EPSS) uses machine learning to estimate the probability that a vulnerability will be exploited in the wild within the next 30 days.

0% (Theoretical)100% (Certainty)

7-Day Exploitation Trend

Vulnerability Timeline

2 events
May 19, 2026
Vulnerability Disclosed
Published to component-level vulnerability database.
May 19, 2026
Last Updated
Record updated with new analysis or tags.

Threat Actor Attribution

PREMIUM INTEL
Associated Groups:Lazarus Group, APT28
Ransomware Campaigns:LockBit 3.0, BlackCat
IoCs (Indicators):14 IPs, 3 Hashes

Remediation & Mitigation

SOLUTION

Official patches and mitigation steps are available for this vulnerability.

# Update Command
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name

References

https://typo3.org/security/advisory/typo3-ext-sa-2026-008Typo3

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Check your domain or package.json for CVE-2026-8727 exposure.

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Vulnerability Details

CVSS Base Score
N/A/ 10
Published Date
May 19, 2026
Last Modified
May 19, 2026
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