What’s Vulnerable › Vulnerabilities

CVE-2026-92785: Angel through 3.3.0 Unauthenticated Kryo Deserialization of Arbitrary Classes

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-16 · updated 2026-09-24
• Weakness: CWE-502

Description

Angel through 3.3.0 deserializes untrusted setAlgoMetrics payload using Kryo without class registration or allowlist validation. Unauthenticated network attackers can instantiate arbitrary classes or exhaust coordinator memory by sending crafted serialized objects to the master RPC endpoint.

Affected products

• Angel-ML angel: through 3.3.0

References

• https://github.com/Angel-ML/angel
• https://github.com/Angel-ML/angel/blob/Release-3.3.0/angel-ps/core/src/main/java/com/tencent/angel/utils/KryoUtils.java#L45-L70
• https://github.com/Angel-ML/angel/issues/1355
• https://www.vulncheck.com/advisories/angel-through-3.3.0-unauthenticated-kryo-deserialization-of-arbitrary-classes
• https://github.com/Angel-ML/angel/issues/1355

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