Dutch Police Arrest ‘Reformed’ Hacker in Shiny Hunters Investigation
Source Krebs on Security
Exploited in the wild · KEV due 15 Jun 2026 · public detection template (Nuclei) : block it and hunt for it in your logs now.
Data as of 28 Sep 2026, 15:15 UTC
- KEV deadline
- US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 11 Jun 2026
Detectable: evidence found.
nuclei template: Oracle PeopleSoft PeopleTools PSEMHUB - Pre-Auth Java Deserialization RCE
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: evidence found.
Listed in CISA KEV 1 day after disclosure
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by Oracle
, 71 days before disclosure
CVE published
on cve.org
, t = 0
In Threat Radar
record ingested
, 1 hour after disclosure
Added to CISA KEV (opens in a new tab)
exploitation confirmed · ransomware use known
, 1 day after disclosure
KEV remediation due
US federal deadline
, 4 days after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Oracle CorporationPeopleSoft Enterprise PeopleTools | Affected
| Fixed in– |
Mavencom.oracle/peoplesoft-enterprise-peopletollspkg:maven/com.oracle/peoplesoft-enterprise-peopletollsOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
Dutch authorities arrested Pepijn van der Stap, a convicted cybercriminal linked to the hacker group ShinyHunters, on suspicion of aiding data thefts and extortions. Van der Stap, known by the alias 'Umbreon,' was involved in multiple data breaches and extortion campaigns, including a major social engineering attack on Odido, the largest Dutch mobile provider, compromising data of over 6.2 million people. Following his arrest, ShinyHunters escalated attacks, breaching the FBI's job application site and extorting the Russian ransomware group Cl0p. The FBI breach exploited a recently patched PeopleSoft vulnerability (CVE-2026-35273). ShinyHunters used evasion techniques to bypass mitigations. Van der Stap had previously been convicted and sentenced to prison, released in late 2025, and had publicly claimed to be reformed before his recent arrest. The investigation and arrests are ongoing, with Dutch authorities seeking public assistance to identify members involved in social engineering intrusions.