EUVD-2026-76904
GHSA-mrhq-xxpp-qf7j
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/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:X
Network-reachable with no privileges or interaction required; sole impact is availability (JVM crash), no confidentiality or integrity effect.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
2DescriptionCVE.org
snappy-java through 1.1.10.8 contains an out-of-bounds write vulnerability in Snappy.uncompress(ByteBuffer, ByteBuffer) because destination buffer capacity is never validated against decompressed size. Attackers can supply valid compressed data that decompresses larger than the destination buffer, causing writes past buffer boundaries and JVM termination.
AnalysisAI
Out-of-bounds write in snappy-java through 1.1.10.8 allows unauthenticated remote attackers to crash the JVM by supplying valid compressed data whose decompressed size exceeds the caller-provided destination ByteBuffer capacity. The Snappy.uncompress(ByteBuffer, ByteBuffer) method passes the destination buffer directly to the native Snappy decompressor via JNI without first asserting that its capacity can accommodate the full decompressed output, causing native-layer writes past the buffer boundary and abrupt JVM process termination. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target application calls the specific `Snappy.uncompress(ByteBuffer, ByteBuffer)` two-argument overload with a caller-provided destination ByteBuffer whose capacity is smaller than the payload's declared or actual decompressed size, and that the attacker controls the compressed input supplied to that code path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VA:H) scores 8.7 and accurately characterises a network-reachable, zero-interaction, unauthenticated denial-of-service condition. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch has been identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all systems and applications deployed with snappy-java version 1.1.10.8 or earlier that process untrusted or external compressed input, prioritizing internet-exposed production systems. …
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Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today