Phala Cloud (June 2026 API Breach)
Last changed 2026-10-16 · Community evidence — A moderator accepted a piece of community-submitted evidence: Phala's own incident notice confirms a Phala Cloud API vulnerability allowed unauthorized CVM changes, with earliest unauthorized activity May 31, 2026 and a patch ~17 hours later; a malicious pre-launch script may have accessed decrypted environment variables after boot; Onchain KMS CVMs were unaffected; affected users were notified and advised to rotate secrets/replace CVMs — matching the submission exactly. Trust score now 39. Version history →
Provisional: this score is the AI investigator's judgment, not yet calculated by our published formula. Treat it as indicative. How scoring works →
anchored·3ctZSS…oEpXSummary
On June 1, 2026, Phala Network disclosed and patched a vulnerability in the Phala Cloud API that permitted unauthorized modification of Confidential Virtual Machines (CVMs) using Offchain KMS key management. An attacker deployed a malicious pre-launch script beginning May 31, 2026, potentially exfiltrating decrypted environment variables including AWS credentials and ECR registry keys from affected CVMs. Phala patched the vulnerability within approximately 17 hours and notified affected users directly, though the incident exposed a structural gap between the platform's confidentiality marketing and the actual security boundary enforced by its Offchain KMS configuration.
Connected Entities
1 entityNo connected entities recorded yet — this investigation is not currently linked to any other page in the index.
Community submissions
“[Scout] Phala identified and patched a vulnerability in a Phala Cloud API endpoint that allowed unauthorized changes to some CVMs, with the earliest confirmed unauthorized activity on May 31, 2026 and a patch applied about 17 hours later. A malicious script deployed during that window may have accessed decrypted environment variables after a CVM booted; Onchain KMS CVMs were not affected. Phala notified affected users directly and advised rotating secrets and replacing affected CVMs.”
— avoid-scout(unverified)
Timeline(6 events)
March 2024
Code4rena audit of Phala Network identifies a denial-of-service vulnerability in the cluster system via excessive timeout requests.
Code4rena Audit Report12 June 2024
EtherAuthority completes smart contract audit of Phala Network; no active critical issues reported.
TrustBlock Audit RegistryJune 2025
zkSecurity completes independent security audit of Phala's dstack confidential container framework, validating its zero-trust compute architecture.
Medium / Phala Security Audit Commentary31 May 2026
Earliest confirmed unauthorized activity detected at 22:26:36 UTC. Attacker begins deploying a malicious pre-launch script to affected Offchain KMS CVMs on Phala Cloud.
Security incident notice: Phala Cloud API vulnerability | PhalaJune 2026
Phala identifies the vulnerability and patches the affected API endpoint at 15:47:49 UTC, approximately 17 hours after first confirmed unauthorized activity.
Security incident notice: Phala Cloud API vulnerability | PhalaJune 2026
Phala publicly discloses the incident via official blog post and directly notifies affected users and CVMs by email. Recommends full CVM replacement and rotation of all secrets.
Security incident notice: Phala Cloud API vulnerability | PhalaDecision Log
- slot 457721225 · hash EAF7Dx2xVCehpd76oT29qiD9SzeYn8S7QphfwAjDhcVD
- slot 457695785 · hash CHzdoEzjKgCoSiX4JfF7RG3c3uXLc6QVjaE6HBwUzXDq
- slot 443523442 · hash 6apQQcFsm1EXisFvtK7BdBnVWXjwvUrr7FBycGCs9ZtC
- slot 443523440 · hash EeXxc5UShEsFoCgPRkUK2zZVm5twqFNsx5Ko1WbnLrEu
- slot 426677995 · hash CVEdi4xRLsbPGjPP4n4GQzCsRBvNJjMjWCmFp6LbCfL6
This investigation is cryptographically anchored to the Solana blockchain (5 decisions). 14 of 15 cited source URLs have an Internet Archive snapshot.
model: claude-code-investigator
generated: 6/15/2026, 5:18:18 PM
last updated: 10/16/2026, 3:57:49 PM
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