RHSA-2026:69464HighCVSS 9.1

Red Hat Security Advisory: Red Hat AI Inference 3.4.5 (spyre)

Published
September 21, 2026
Last Modified
October 2, 2026

🔗 CVE IDs covered (22)

CVE-2026-59199 →CVE-2026-5241 →CVE-2026-44223 →CVE-2026-48526 →CVE-2026-48746 →CVE-2026-59200 →CVE-2026-59204 →CVE-2026-54283 →CVE-2026-41523 →CVE-2026-42311 →CVE-2026-54060 →CVE-2026-55380 →CVE-2026-59205 →CVE-2026-73556 →CVE-2026-55379 →CVE-2026-55574 →CVE-2026-59197 →CVE-2026-5497 →CVE-2026-34993 →CVE-2026-48710 →CVE-2026-54058 →CVE-2026-54234 →

📋 Description

CVE-2026-5241 — python-transformers: python-transformers: Arbitrary code execution due to overridden trust_remote_code setting CVE-2026-5497 — vllm: vLLM: Denial of Service via unbounded video frame processing CVE-2026-34993 — aiohttp: AIOHTTP: Arbitrary code execution via untrusted input to CookieJar.load() CVE-2026-41523 — vllm: vLLM: Arbitrary code execution via malicious HuggingFace model CVE-2026-42311 — Pillow: python-pillow: Pillow: Arbitrary code execution via malicious PSD file processing CVE-2026-44223 — vllm: vLLM: Denial of Service via malformed tensor shape in speculative decoding CVE-2026-48526 — python-pyjwt: PyJWT: Authentication bypass due to forged JSON Web Tokens CVE-2026-48710 — starlette: Starlette: Security restriction bypass via malformed HTTP Host header CVE-2026-48746 — vllm: starlette: vLLM: Critical authentication bypass allows unauthorized API access CVE-2026-54058 — Pillow: Pillow: Memory disclosure or denial of service via crafted McIdas AREA image CVE-2026-54060 — python-pillow: Pillow: Denial of Service via excessive memory allocation when processing font files CVE-2026-54234 — vllm: vLLM: Denial of Service via malformed speculative decoding workload CVE-2026-54283 — starlette: Starlette: request.form() limits silently ignored for application/x-www-form-urlencoded enable DoS CVE-2026-55379 — python-pillow: Pillow: Denial of Service via crafted BDF font file CVE-2026-55380 — python-pillow: Pillow: Denial of Service via crafted GD 2.x image file CVE-2026-55574 — vllm: vLLM: Denial of Service via adversarial regular expression in structured outputs API CVE-2026-59197 — Pillow: Pillow: Native heap out-of-bounds write CVE-2026-59199 — Pillow: Pillow: Denial of Service via out-of-bounds write in image processing CVE-2026-59200 — Pillow: Pillow: Denial of service via crafted PDF stream CVE-2026-59204 — Pillow: Pillow: Denial of Service via crafted JPEG2000 image CVE-2026-59205 — Pillow: Pillow: Controlled native heap corruption in ImageCms.ImageCmsTransform.apply API CVE-2026-73556 — vllm: vLLM: Denial of Service via Regular Expression processing

🎯 Affected products4

  • Red Hat AI Inference Server 3.4
  • registry.redhat.io/rhaii/vllm-spyre-rhel9@sha256:6b855616de644893c5ee76cd6e496478762f941855f05e47bdac27aa259a7aae_ppc64le as a component of Red Hat AI Inference Server 3.4
  • registry.redhat.io/rhaii/vllm-spyre-rhel9@sha256:8f3b2de1d5a8fdba70e937ff1ab95c0584cec32a4d58b1e636ea130a6461cea1_amd64 as a component of Red Hat AI Inference Server 3.4
  • registry.redhat.io/rhaii/vllm-spyre-rhel9@sha256:b600c4226c78042f1a7d596f8f567dd2d9a97b5b3bb9b008d994c6bfb12bd7f1_s390x as a component of Red Hat AI Inference Server 3.4

✅ Remediation

For more information visit https://access.redhat.com/errata/RHSA-2026:69464 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Workaround: Applications using AIOHTTP that are configured to load untrusted files via the `CookieJar.load()` function should implement input sanitization prior to loading. This prevents the injection of malicious code. Workaround: Avoid running vLLM with python -O or PYTHONOPTIMIZE=1 until updated packages are available. Only load models from trusted sources. Restrict who can deploy or update models on inference endpoints. Apply network access controls and authentication in front of vLLM APIs. Workaround: To mitigate this vulnerability, users should avoid processing untrusted or suspicious PSD image files with applications that utilize the Pillow library. Implementing strict input validation and sanitization for image uploads and processing workflows can reduce the risk. Additionally, running applications that process untrusted content within a sandboxed environment can limit the potential impact of successful exploitation. Workaround: Deploying an RFC-compliant reverse proxy (such as nginx, Apache, HAProxy, or Caddy) in front of the ASGI server will reject malformed Host headers before they reach the application. This is the most straightforward mitigation that does not require code changes. If custom middleware is present, it should be updated to use `request.scope["path"]` instead of `request.url.path` for any security decisions. The ASGI scope path is derived from the HTTP request line and is not influenced by the Host header, so it reflects the actual request target. Workaround: Restrict network access to the vLLM API endpoint to only trusted clients and internal networks. Implement firewall rules or network policies to limit inbound connections to the vLLM service, thereby reducing the attack surface. This operational control helps prevent unauthorized external access to the vulnerable API. Workaround: To mitigate this issue, restrict network access to the vLLM inference engine's gRPC Generate and Abort endpoints. Configure firewall rules to limit incoming connections to trusted clients or internal networks only. This will prevent remote, unauthenticated attackers from sending malformed workloads and triggering a denial of service. If the service is exposed via a proxy or load balancer, ensure that access controls are in place at that layer. Workaround: Do not load BDF font files from untrusted sources. Applications that only process standard image formats (PNG, JPEG, etc.) and do not use BdfFontFile or ImageFont.load() with BDF files are not affected. Workaround: Avoid processing untrusted GD 2.x image files with PIL.GdImageFile.open(). Use Image.open() instead, which includes decompression bomb protections for supported formats. If GdImageFile must be used, validate the image dimensions before calling load(). Restricting accepted image formats at the application boundary to only those explicitly needed can reduce exposure. Workaround: If the application does not need JPEG2000 support, block .jp2, .j2k, .jpf, and .jpx uploads at the input layer. For services that do process JPEG2000, set memory limits on the process or container (LimitAS= in systemd, or memory limits in Kubernetes/Podman) so a crafted image can only crash the worker, not the whole host. Add automatic restarts (Restart=always in systemd, or container restart policies) so the service recovers from OOM kills without someone having to intervene. Workaround: Most applications using Pillow's color management via profileToProfile() or applyTransform() are not exposed. Only code that calls ImageCmsTransform.apply() directly with a user-controlled output image whose mode does not match the transform can trigger the heap corruption. Audit your code for direct apply() calls to confirm. RHEL builds ship with ASLR, full RELRO/PIE, and FORTIFY_SOURCE by default, making escalation from crash to code execution much harder. For DoS containment, configure automatic service restart (Restart=always in systemd, or container restart policies) so the process recovers without manual intervention.

🔗 References (26)