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SGLang EUVDEUVD-2026-84408

| CVE-2026-93088 CRITICAL
Deserialization of Untrusted Data (CWE-502)
2026-09-22 certcc GHSA-xv76-mrpv-26pg
9.8
CVSS 3.1 · Vendor: certcc
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Vendor (certcc) PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
9.8 CRITICAL

Unauthenticated network-reachable ZeroMQ socket feeding attacker bytes to pickle.loads() yields deterministic RCE with no privileges or interaction, giving full C/I/A impact.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE
CRITICAL
qualitative

Primary rating from Vendor (certcc).

CVSS VectorVendor: certcc

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
Metadata Corrected
Sep 22, 2026 - 19:40 vuln.today
tag: Python added
Analysis Generated
Sep 22, 2026 - 19:37 vuln.today
CVSS changed
Sep 22, 2026 - 19:22 NVD
9.8 (CRITICAL)
CVE Published
Sep 22, 2026 - 14:07 cve.org
CRITICAL 9.8
CVE Published
Sep 22, 2026 - 14:07 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

SGLang's multimodal generation runtime is vulnerable to unauthenticated arbitrary code execution because the disaggregated-diffusion orchestrator's DiffusionServer binds an unauthenticated ZeroMQ ROUTER socket to a network interface and passes the final frame of received multipart messages directly to pickle.loads() before any validation occurs.

AnalysisAI

Unauthenticated remote code execution in SGLang 0.5.11 through 0.5.14 occurs when the multimodal generation runtime is launched in disaggregated-diffusion mode, where the DiffusionServer orchestrator binds a ZeroMQ ROUTER socket to a network-reachable interface with no authentication and passes the final frame of every received multipart message directly into pickle.loads() before any validation is performed. Rated CVSS 3.1 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), the flaw lets any remote party that can deliver a multipart ZMQ message to that socket execute arbitrary Python code in the serving process, yielding full compromise of confidentiality, integrity and availability on the host. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Delivery
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Vulnerability AssessmentAI

Exploitation Requires the SGLang deployment to be running the multimodal generation runtime in disaggregated-diffusion mode, so that the DiffusionServer orchestrator is active and its unauthenticated ZeroMQ ROUTER socket is bound to a network-reachable interface. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a genuine high-priority vulnerability, not an inflated high-CVSS score. … 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 identified at time of analysis, and no fixed version is specified in the supplied references, so confirm current status against the upstream project at https://github.com/sgl-project/sglang and the advisory links https://hacchoomiso.github.io/blog/SGLang/CVE-2026-93088/ and https://nvd.nist.gov/vuln/detail/CVE-2026-93088 before assuming a fix exists; upgrade to any later tagged release the maintainers publish for this issue. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory every SGLang deployment running versions 0.5.11 through 0.5.14 and determine which are launched in disaggregated-diffusion mode with the DiffusionServer ZeroMQ ROUTER socket bound to a non-loopback interface; for each confirmed instance, immediately block inbound traffic to the orchestrator port at the host firewall and network perimeter so only trusted management hosts can reach it, rebind the socket to 127.0.0.1 where feasible, or stop the service until containment is verified. …

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Vendor StatusVendor

SUSE

Severity: Critical
Product Status
openSUSE Tumbleweed Fixed

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EUVD-2026-84408 vulnerability details – vuln.today

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