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Multiple outlets (TechCrunch, Help Net Security, SC Media) plus Oracle's advisory confirm the CVE-2026-35273 PeopleSoft zero-day exploited by ShinyHunters.

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Home/Tech/Oracle Mitigates PeopleSoft Zero-Day in ShinyHunter Attacks
VERIFIEDBy Xavier Rivera· ·2 min read

Oracle Mitigates PeopleSoft Zero-Day in ShinyHunter Attacks

Oracle released emergency mitigations for CVE-2026-35273, a critical unauthenticated remote code execution zero-day in PeopleSoft PeopleTools 8.61 and 8.62 that ShinyHunters exploited to steal data from 300 instances across more than 100 organizations. The flaw carries a 9.8 CVSS score and highlights ongoing risks to enterprise platforms hosting sensitive corporate data.

Source:BleepingComputer
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Oracle Mitigates PeopleSoft Zero-Day in ShinyHunter Attacks
TL;DRAI · 60 sec read

Oracle mitigates a zero-day vulnerability in PeopleSoft PeopleTools 8.61 and 8.62 that allows unauthenticated remote code execution. ShinyHunters used the flaw to attack more than 100 organizations across 300 instances. Mandiant confirms the exploitation. Oracle provides emergency fixes while a full patch is prepared. Affected users should scan logs for listed attacker IPs.

Oracle has issued an emergency mitigation for a critical zero-day vulnerability in its PeopleSoft Suite that is actively exploited in data theft attacks by the ShinyHunters extortion gang.

Oracle discloses CVE-2026-35273 with a 9.8 CVSS score. The flaw resides in Oracle PeopleSoft PeopleTools versions 8.61 and 8.62 and allows unauthenticated remote code execution. Oracle's advisory states the vulnerability is remotely exploitable without authentication and, if successfully exploited, may result in remote code execution.
ShinyHunters used the zero-day to breach over 100 organizations.
The company confirmed that Oracle PeopleSoft Enterprise Applications customers may also be affected. Oracle has released emergency mitigations and said a patch is coming soon.
https://x.com/nahamike01/status/2064529246178210220
ShinyHunters used the zero-day to breach over 100 organizations. BleepingComputer first reported that the gang was exploiting a PeopleSoft zero-day to steal data, and has since confirmed that CVE-2026-35273 is the flaw involved. The group left ransom notes on compromised instances and claimed to use a gadget chain of old and zero-day flaws.
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ShinyHunters allegedly stole data from 300 instances belonging to more than 100 organizations. The gang is known for targeting cloud SaaS instances, CRMs, and enterprise platforms that host large volumes of corporate data, then demanding ransom to prevent public leaks. It has previously been linked to high-profile attacks on Snowflake, Salesforce, and third-party integration providers over the past year.
The group left ransom notes on compromised instances and claimed to use a gadget chain of old and zero-day flaws.
Mandiant confirms active exploitation and Oracle's response. Charles Carmakal, CTO at Mandiant - Google Cloud, confirmed on LinkedIn that CVE-2026-35273 is actively exploited and that Oracle has released mitigations. Cybersecurity researcher "Michael R" identified exposed online directories with attack-related tooling and listed IP addresses used in the attacks.

The IP addresses are 142.11.200.186, 142.11.200.187, 142.11.200.188, 142.11.200.189, 142.11.200.190, 108.174.202.99, and 176.120.22.24. Oracle has not directly stated that the vulnerability is actively exploited in its advisory. BleepingComputer reached out to Oracle for comment but has not received a response.
Organizations running PeopleSoft are urged to check logs immediately. Administrators are strongly advised to analyze logs for connections from the listed IP addresses to determine if they were targeted. The disclosure arrives on the same day as Oracle's advisory, June 11, 2026.

EXPERT TAKE

Enterprise security teams should treat this as an immediate patching priority and scan logs for the listed IPs, as the gap between zero-day disclosure and widespread exploitation continues to shrink for legacy enterprise suites.

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