CVE-2026-8727

highpriority · track · 0EPSS 0.004 · 33 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.39% (33rd) EPSS

CVSS 7.1 · high

Is it mine?

40 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · osv

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4–7.1

v4.07.1highCVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:Lsecondary · ENISA EU

v4.07.1highCVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary

v4.04mediumCVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-502USCWE-502US

affected products (40)

Products and version ranges known to be affected.

TYPO3 Extension ceselector <3.0.3all versionscert_bundDE
TYPO3 Extension ceselector <4.0.2all versionscert_bundDE
TYPO3 Extension ceselector <5.0.1all versionscert_bundDE
TYPO3 Extension ceselector <6.0.1all versionscert_bundDE
TYPO3 Extension crawler <11.0.13all versionscert_bundDE
TYPO3 Extension crawler <12.0.11all versionscert_bundDE
TYPO3 Extension ke_search <5.6.2all versionscert_bundDE
TYPO3 Extension ke_search <6.6.1all versionscert_bundDE
TYPO3 Extension ke_search <7.0.1all versionscert_bundDE
TYPO3 Extension news <11.4.4all versionscert_bundDE
TYPO3 Extension news <12.3.2all versionscert_bundDE
TYPO3 Extension news <13.0.2all versionscert_bundDE
TYPO3 Extension news <14.0.3all versionscert_bundDE
TYPO3 Extension sf_register <13.2.4all versionscert_bundDE
TYPO3 Extension sf_register <14.0.2all versionscert_bundDE
TYPO3 Extension tt_address <10.0.1all versionscert_bundDE
TYPO3 Extension tt_address <8.1.2all versionscert_bundDE
TYPO3 Extension tt_address <9.1.1all versionscert_bundDE
TYPO3 Extension≤ tt_address <9.1.1cert_bundDE
TYPO3 Extension≤ ceselector <3.0.3cert_bundDE

showing 20 of 40

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1585TYPO3 Extensions: Mehrere SchwachstellenDeutsch2026-05-18csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in TYPO3 Extensions ausnutzen, um beliebigen Programmcode auszuführen, um einen SQL-Injection Angriff durchzuführen, um Informationen offenzulegen, und um Sicherheitsvorkehrungen zu umgehen.
GHSA-jr8m-x4p7-p3v5TYPO3 Remote Code Execution in extension "Site Crawler" (crawler)2026-05-19ghsa · osvUS
The TYPO3 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. This has been patched in versions 12.0.11 and 11.0.13.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund osv NVD CVE.org MITRE

published 2026-05-19modified 2026-10-26

references (4)

External citations — patches, advisories, analysis.

scry

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