# CVE-2026-35469: SpdyStream: DOS on CRI > A remote attacker can crash services using the spdystream library by sending crafted SPDY frames that trigger excessive memory allocation. - **Severity:** High 8.7 (`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`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 16 Apr 2026 - **Updated:** 11 Sep 2026 - **Also known as:** AZL-82937, AZL-85605, AZL-85625, AZL-85628, AZL-85634, AZL-85637, AZL-85640, AZL-85679, AZL-85682, AZL-85685, AZL-85688, AZL-85694, BELL-CVE-2026-35469, CLEANSTART-2026-EV94436, CLEANSTART-2026-GU43642, CLEANSTART-2026-HP85044, CLEANSTART-2026-RJ56539, CLEANSTART-2026-TA66488, CLEANSTART-2026-YV21606, CLEANSTART-2026-ZK08124, CLEANSTART-2026-ZL60505, DEBIAN-CVE-2026-35469, GHSA-pc3f-x583-g7j2, GO-2026-4958, MINI-24h3-xc58-4q2g, MINI-266r-h785-rmx7, MINI-27g5-vjcj-g8r7, MINI-294v-w7wj-2g8w, MINI-2ch6-ppxp-5756, MINI-2cp2-vjhc-x5f3, MINI-2f7h-8xh7-rv46, MINI-2h67-fcpq-q973, MINI-2hv6-2px8-982q, MINI-2jgx-vh35-4f9g, MINI-2x49-7w79-mq44, MINI-3369-66wf-mq8q, MINI-33j2-mh74-xh9c, MINI-343j-7vr2-3298, MINI-35m8-4243-2hmf, MINI-3745-j6ww-8h89, MINI-3c4w-23wx-5wc7, MINI-3hmq-pgvq-5r3f, MINI-3vcq-j6q5-5vcv, MINI-3vv7-2cw8-c3mh, MINI-3xhq-cpwv-vfjv, MINI-42gr-7q29-qxwj, MINI-47wh-v448-6886, MINI-487v-jpcr-g22c, MINI-4fx2-gc5q-8q2f, MINI-4jjx-pfgg-9mhr, MINI-4jpp-grv3-hjc8, MINI-4p36-p7cw-hf6p, MINI-4p7f-w46c-vh4q, MINI-4vx8-fj5f-22xf, MINI-54qv-rj3m-75wm, MINI-564m-hx4w-5pqh, MINI-58vc-r9w4-v596, MINI-5c62-2jg7-w98w, MINI-5f69-m3x2-jx35, MINI-5ffj-gg78-5285, MINI-5fwc-v6h3-8f22, MINI-5jc6-4pvq-9rg2, MINI-5qg5-m77h-vf5x, MINI-5qh5-mg9m-xxg8, MINI-5qmc-wwg8-39q8, MINI-5rjg-vq92-4p85, MINI-637r-jxhr-37wf, MINI-648g-73m7-h72p, MINI-693c-85q8-37hf, MINI-69p7-fwqv-jqpg, MINI-6jq2-f9r2-6hvg, MINI-6jvh-jrvw-mmqv, MINI-6mc6-4v46-74h9, MINI-6p2p-gwx7-ghgh, MINI-6phw-c5f8-4548, MINI-74qf-69rj-2g45, MINI-75pv-c2qf-7hgj, MINI-77xg-pppf-48x6, MINI-7838-vpfj-29rh, MINI-79f9-mchx-cg6j, MINI-7gw5-j76f-pwwr, MINI-7jf7-2c4p-qrg9, MINI-7m25-3m5v-qfww, MINI-7p2f-4hq8-6rcq, MINI-7vxh-fx3m-4qrj, MINI-84mp-668x-jmgg, MINI-88c3-6r9q-pg4w, MINI-89wp-56wf-mgm4, MINI-8c4h-988h-f9p6, MINI-8f73-8qhw-c5f5, MINI-8g62-f24w-mj8q, MINI-8hv2-2cqw-95j4, MINI-8hvp-g93c-ccpf, MINI-8r3m-m5gw-v5x7, MINI-8xwg-5gwv-4vm2, MINI-92fh-rq7j-9gw6, MINI-92vg-fjj2-3pvv, MINI-92wq-2f3m-3h9j, MINI-96c7-rrc6-fw2f, MINI-9792-pmq8-58f7, MINI-9f76-25j3-vwwr, MINI-9fx6-4gqp-2395, MINI-9gqm-wc76-547p, MINI-9h5w-mrf8-59pf, MINI-9pm7-pqhx-4vgw, MINI-9px7-cxpj-4mm2, MINI-9vhm-7f5p-vmxj, MINI-9wj7-rrwg-p766, MINI-9wmc-75f4-m424, MINI-c2wq-3xfc-gch3, MINI-c4c7-6mc3-rjj6, MINI-c66c-rjxx-4f3g, MINI-c72c-vgv5-826p, MINI-c7f8-mfq2-mvw8, MINI-c9w4-jfwc-j8p8, MINI-cc3f-2956-4cf5, MINI-cfcj-wrjf-3pw6, MINI-cp2j-8jc4-c2m2, MINI-cp6x-4435-5gc6, MINI-f344-qgpr-f9cq, MINI-f7hg-6wv2-q5qh, MINI-f94m-782v-76qh, MINI-fc99-qcg4-hqfv, MINI-ffrr-5hx7-94x8, MINI-fhv5-5g93-p9f5, MINI-fm4w-c3p5-gqcj, MINI-fp23-73c7-pq34, MINI-fp6f-cm77-8jxv, MINI-fpvr-g8j7-7446, MINI-fr9p-8wqg-hvhq, MINI-g25r-7r52-mr84, MINI-g7vh-m6w5-733r, MINI-g892-3jv5-6q5r, MINI-g8c4-xf8p-3r5g, MINI-gch7-hrcg-8wcf, MINI-ggp9-f74g-22w2, MINI-gh7q-wgpg-vrgf, MINI-gq2c-823g-jjgj, MINI-gq3r-hmr2-qggm, MINI-gv6g-cr38-6g5v, MINI-gx55-55jc-h6fg, MINI-h3fj-7cr4-8g7r, MINI-h47p-25f5-c533, MINI-h573-h3xr-gf7f, MINI-h5j7-37p3-c97r, MINI-h69w-69h8-m9g6, MINI-h6pg-wg6v-fxpj, MINI-h6r2-923x-h9fc, MINI-hpgj-h5g6-gx86, MINI-j2rx-452f-r3pj, MINI-j3wj-9q9x-x6rx, MINI-j553-wgcx-wwp5, MINI-j5c3-vjmg-pr3w, MINI-j5w3-6rp5-pqxr, MINI-j8cx-25pc-x33v, MINI-j998-p943-xfcj, MINI-j9jc-65wf-q79j, MINI-jfvv-86rq-m2mv, MINI-jg5q-wf3q-cfvp, MINI-jh3v-f8q2-pm57, MINI-jhc9-q2wf-9mq8, MINI-jhgr-c3v9-4qh5, MINI-jjc8-62qr-2cw5, MINI-jjc9-m7c4-p47x, MINI-jp52-65rq-68c6, MINI-jvfh-78xf-75j9, MINI-jwmw-7m6v-gr9q, MINI-jxqr-4cx4-m893, MINI-m386-83ff-p2g7, MINI-m7qr-p4w2-7xxq, MINI-m832-276p-cpq4, MINI-m845-mpmc-6f48, MINI-m8m9-q8mv-wch6, MINI-m948-g4c7-h2c7, MINI-mc2m-q9c5-85xq, MINI-mc8p-7c94-6prg, MINI-mp9w-vqqp-v5xf, MINI-mvfx-pmq6-36qf, MINI-mvgp-xwrx-jp3g, MINI-mxf7-jh32-cq22, MINI-p25q-pf8p-37xg, MINI-p2rw-cpmj-w4fp, MINI-p6ww-m8f5-f7xg, MINI-p8fg-p3jq-j4px, MINI-pfc8-92f6-x2rv, MINI-pmg7-9m59-83j3, MINI-pmvw-9fpx-g69q, MINI-pv2p-c7rq-254f, MINI-pxm8-64mp-cqvj, MINI-q26v-2xh4-mm3h, MINI-q3f4-h2hm-gq66, MINI-q8gf-67rc-p66c, MINI-qfcm-4m68-c22c, MINI-qg3g-6mx2-j9m6, MINI-qp22-c236-vcv4, MINI-qpc2-xprm-39w8, MINI-qpr5-xfr9-x64x, MINI-qw6w-5w6c-qhch, MINI-r36j-5rm4-h2mr, MINI-r5hg-qv85-qvq9, MINI-r78p-684r-3xmx, MINI-r8p5-rf94-j85m, MINI-r9mp-v348-v7gr, MINI-rcg7-9cmc-8w25, MINI-rgff-5ggf-jhc4, MINI-rgqm-h97j-mvv8, MINI-rrrp-px69-x9j9, MINI-rv94-wrxv-34mw, MINI-v479-9v36-mm43, MINI-v4w3-qv76-g9m3, MINI-v4w4-7rqf-hp35, MINI-v5j3-hr5p-rgrx, MINI-v67c-7q9r-g8q4, MINI-v749-jj87-5gxp, MINI-v97r-4j9r-7m2g, MINI-vcr6-9h8q-hj69, MINI-vpqv-q2rr-gwp4, MINI-vqrr-4864-c2c3, MINI-vxhm-wqcr-c8qr, MINI-w7mp-g7jp-3qg8, MINI-w8q2-rhp6-586q, MINI-w8rg-24g7-c695, MINI-w9mh-vj3h-jp5f, MINI-w9xm-99w5-jgc3, MINI-wcg3-x7vf-mg95, MINI-wf7j-vcq8-mcr4, MINI-wgcw-f2x6-xf89, MINI-whq5-g454-945f, MINI-wjfc-rm7q-6gf8, MINI-wm5w-27v3-v8wg, MINI-wrf8-mq4f-mf9f, MINI-wv35-8wvq-765c, MINI-x365-9387-22g2, MINI-x39w-2xvw-9735, MINI-x52r-38mg-6hv6, MINI-x825-f87f-pwjr, MINI-xg2c-m7r7-vpv4, MINI-xq45-xv8f-hwjq, MINI-xrrv-7gfh-cw7p, MINI-xw32-75wj-23xw, MINI-xw9q-jwc3-9gpx, OESA-2026-2162, OESA-2026-3564, RHSA-2026:34755, RHSA-2026:51422, ROOT-APP-GOBINARY-CVE-2026-35469, SUSE-SU-2026:3504-1, UBUNTU-CVE-2026-35469, openSUSE-SU-2026:11307-1 ## What is CVE-2026-35469? CVE-2026-35469 is a high-severity denial of service vulnerability in moby spdystream, published on 16 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description spdystream is a Go library for multiplexing streams over SPDY connections. In versions 0.5.0 and below, the SPDY/3 frame parser does not validate attacker-controlled counts and lengths before allocating memory. Three allocation paths are affected: the SETTINGS frame entry count, the header count in parseHeaderValueBlock, and individual header field sizes — all read as 32-bit integers and used directly as allocation sizes with no bounds checking. Because SPDY header blocks are zlib-compressed, a small on-the-wire payload can decompress into large attacker-controlled values. A remote peer that can send SPDY frames to a service using spdystream can exhaust process memory and cause an out-of-memory crash with a single crafted control frame. This issue has been fixed in version 0.5.1. Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling) ## Which versions are affected by CVE-2026-35469? 3 open source packages ship an affected version, including github.com/moby/spdystream. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `github.com/moby/spdystream` | Go | All versions | 0.5.1 | | `github.com/moby/spdystream` | Go | All versions | 0.5.1 | | `github.com/moby/spdystream` | Go | All versions | 0.5.1 | | `microshift` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-ai-model-serving` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-ai-model-serving-release-info` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-gateway-api` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-gateway-api-release-info` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-greenboot` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-low-latency` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-multus` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-multus-release-info` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-networking` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-observability` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-olm` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-olm-release-info` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-release-info` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `microshift-selinux` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el9 | | `openshift` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.0-202606301915.p2.g63adf01.assembly.stream.el9 | | `openshift-hyperkube` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.0-202606301915.p2.g63adf01.assembly.stream.el9 | | `openshift-kube-apiserver` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.0-202606301915.p2.g63adf01.assembly.stream.el9 | | `openshift-kube-controller-manager` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.0-202606301915.p2.g63adf01.assembly.stream.el9 | | `openshift-kube-scheduler` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.0-202606301915.p2.g63adf01.assembly.stream.el9 | | `openshift-kubelet` | Red Hat:openshift:4.19::el9 | All versions | 0:4.19.0-202606301915.p2.g63adf01.assembly.stream.el9 | | `containerd` | SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | All versions | 1.7.29-16.113.1 | | `kubevirt1.8` | openSUSE:Tumbleweed | All versions | 1.8.4-1.1 | ## How do I fix CVE-2026-35469? Upgrade github.com/moby/spdystream to 0.5.1 or later. ## Is CVE-2026-35469 being exploited? There is no known exploitation of CVE-2026-35469 in the wild and no public exploit code. ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2026-35469 and fix it if it is affected. What it is: CVE-2026-35469 is a high-severity denial of service vulnerability in moby spdystream, published on 16 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2026-35469 in the wild and no public exploit code. Affected packages and fixed versions: - github.com/moby/spdystream (Go): affected all versions; fixed in 0.5.1 - github.com/moby/spdystream (Go): affected all versions; fixed in 0.5.1 - github.com/moby/spdystream (Go): affected all versions; fixed in 0.5.1 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2026-35469/ (Markdown: https://insights.sbomify.com/CVE-2026-35469/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2026-35469 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-35469 - OSV: https://osv.dev/vulnerability/CVE-2026-35469 --- From sbomify Insights: https://insights.sbomify.com/CVE-2026-35469/ Summaries are generated and may contain mistakes; the official description above is the record.