# CVE-2026-50151: oras-go: credential forwarding via unvalidated Location header in blob upload > A malicious registry can steal user credentials by returning a cross-host Location header during blob uploads in the oras-go library. - **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 17 Jul 2026 - **Updated:** 20 Jul 2026 - **Also known as:** CLEANSTART-2026-BG37104, CLEANSTART-2026-CZ25792, CLEANSTART-2026-GY88228, DEBIAN-CVE-2026-50151, GHSA-jxpm-75mh-9fp7, GO-2026-5882, MINI-2285-gc7h-j6q5, MINI-22qw-7cp4-vp7h, MINI-232q-hx75-3rfp, MINI-26v8-27xc-x3q2, MINI-28qx-xqq8-m3qj, MINI-2hvm-grhw-65r2, MINI-2jp2-jwq7-7rpr, MINI-2mfh-p6j6-ww34, MINI-2w73-5w95-cfhp, MINI-2x38-q759-hccw, MINI-3484-754j-qwmr, MINI-386r-v478-qj8j, MINI-3f8r-cqfg-f56g, MINI-3ghq-3784-87xw, MINI-3gwv-2r4h-rpfm, MINI-3m84-93mr-mhmv, MINI-3mhw-3fwq-79r8, MINI-3p5q-3797-wwfr, MINI-3r7j-fgm2-3j72, MINI-4247-qj69-v49v, MINI-452g-2vrw-7wfh, MINI-45p8-r559-79rq, MINI-46fm-72r5-chqc, MINI-46q6-54qj-jhvx, MINI-46w6-m245-5g8h, MINI-4g33-5w29-5wff, MINI-4gpv-wh7x-3h4h, MINI-4j7h-6pp7-4jmg, MINI-4rfr-4969-3f6p, MINI-5c8r-53jh-qg29, MINI-5cwm-qphv-7whj, MINI-5fq6-2j93-5596, MINI-5fqj-pq7c-7c6q, MINI-5j22-7v8x-cm32, MINI-5p2h-rg83-c439, MINI-5qjm-2587-cx3m, MINI-5v85-hr3q-6gw5, MINI-5w92-5gwx-p45h, MINI-5wcp-9r4f-2jr7, MINI-623j-mq2v-2f77, MINI-62rm-vfch-cq4w, MINI-645x-9fcp-5cw2, MINI-646f-chjv-jv7h, MINI-6494-h6gh-cqm8, MINI-657v-cg7p-j3cq, MINI-66jm-qqrx-hr33, MINI-68p4-hcp9-p46x, MINI-694h-5vj2-6m8w, MINI-69xf-vw98-gxpm, MINI-6fhh-qcvm-4x4p, MINI-6gg2-c295-4g34, MINI-6hh5-jfpg-669f, MINI-6j88-f33p-pq4c, MINI-6mfv-6p5f-3hmg, MINI-6qr8-f4qx-fq6w, MINI-6v4g-rc72-xcw7, MINI-72xm-qgcx-mr9h, MINI-7744-8jv9-5cj7, MINI-7955-w9fq-jf75, MINI-7cvx-33v2-wv2j, MINI-7g96-382v-7hc4, MINI-7j62-68m5-35wv, MINI-7j73-hvmh-6w6j, MINI-7rf7-95ww-9j96, MINI-8322-59jv-q327, MINI-83r3-h3cj-qpr7, MINI-843g-8362-34r2, MINI-8467-865w-jm7w, MINI-8g37-q8m6-8grw, MINI-8hc4-44r4-c63j, MINI-8j5f-qm3c-ww23, MINI-8r4q-3xwm-28g2, MINI-8rj9-fgv7-m96r, MINI-92xq-33v2-rprm, MINI-93f6-rhhm-h2h4, MINI-94q6-v666-35wh, MINI-9j28-5c6w-gc9c, MINI-9j3v-cm96-frvj, MINI-9jhw-f5h7-v5v4, MINI-9m25-8h3w-v8p9, MINI-9mvr-72v9-xp4h, MINI-9p5q-qqvx-wj7p, MINI-9q2v-56hw-mpv4, MINI-9rf3-wm27-44xx, MINI-9vr9-29xf-fvx7, MINI-9x43-82h5-5xxf, MINI-9xr7-qcww-vf4w, MINI-c548-5ff4-ccfq, MINI-c6h2-jp7f-vq9m, MINI-c7qx-3fvq-r2j9, MINI-c8rh-5hrr-7vx9, MINI-ccfp-82v8-9jv7, MINI-cgh3-q8ww-vrfp, MINI-cm64-h9vp-7jpg, MINI-cr2p-h6jj-r3rc, MINI-cw2x-qfx6-86q4, MINI-f226-ghvh-w899, MINI-f2fq-6846-5grc, MINI-f3vv-24fq-fjg2, MINI-f5jq-gg52-6gv4, MINI-f6h2-v3cm-x784, MINI-f6rc-rwrr-wqpc, MINI-f87v-8rwj-x9jv, MINI-fff6-hggf-r58r, MINI-g927-pxpc-3cjj, MINI-g9pm-4mr2-9824, MINI-gj6p-h86x-x78w, MINI-gmcr-wj53-2m95, MINI-gvqq-45x7-6wq4, MINI-gvw8-gpjj-j886, MINI-gwqw-7hfm-g4vc, MINI-h2mp-j482-q8qg, MINI-h3j7-ghr9-679h, MINI-h4p4-5fvx-r693, MINI-h4rv-w7rc-56g2, MINI-h5g3-jqpw-4r2w, MINI-h7vx-h2h9-w56v, MINI-hcp5-9wvg-6xxg, MINI-hhcx-3vpr-65m9, MINI-hhg2-c4pg-wpc2, MINI-hpmf-59rc-4fcv, MINI-hqfx-3v3v-72wg, MINI-hqj2-3qhq-jhq6, MINI-hrgj-f2fj-hc69, MINI-j7p4-hqfj-9h35, MINI-j897-5hcv-5m49, MINI-jf37-ffq5-gw8v, MINI-jm7j-7c9w-7rgr, MINI-jq65-wpqx-v2mx, MINI-jwgr-r4f3-5gcx, MINI-jwp3-98g2-53j5, MINI-jx87-57c4-hg53, MINI-m24f-9hf7-wgc2, MINI-m2v9-r4h4-qqp5, MINI-m375-9hp4-596q, MINI-m7h7-c8g3-j44c, MINI-m873-8c9h-gpcf, MINI-m8gj-mwjg-6wx6, MINI-mcfq-hj35-q39h, MINI-mg4g-gv92-c3gf, MINI-mgxj-3395-pq6v, MINI-mmh2-p8vm-2jxh, MINI-mqmg-c7vc-cfc9, MINI-mx77-4r66-g87w, MINI-mx8x-pgjp-vccv, MINI-mxgv-2mqf-hrrv, MINI-p4m6-6h49-9g45, MINI-p88g-835p-4rg9, MINI-p8p9-9pr9-qhh5, MINI-p9g8-p526-x7fg, MINI-pcvj-2p6m-w239, MINI-pg9r-4r6j-77cg, MINI-pgqg-v2xh-964q, MINI-pjcc-g4qr-wfph, MINI-pjj9-487h-3f9v, MINI-pjvw-4685-6jxq, MINI-pmpp-447w-f645, MINI-ppxf-hfg9-46m7, MINI-pvw5-m2v3-492g, MINI-pwcf-687p-wfj6, MINI-pxgh-h46q-qwpv, MINI-q52v-46xq-2x6w, MINI-q7rx-j4qj-x337, MINI-qfcc-mx8v-5rfp, MINI-qfxr-pm5m-7mvj, MINI-qh9m-72x9-9mcg, MINI-qm94-w322-8476, MINI-qmcv-8vm6-vm69, MINI-qrpp-378m-qg65, MINI-r4vf-rvm9-g2cm, MINI-r75x-68q8-hjvr, MINI-r9fx-vwch-p843, MINI-rc34-crph-x8v2, MINI-rgh3-44gc-rc56, MINI-rjgr-6m89-67rr, MINI-rmp9-4ccc-f9pc, MINI-rprj-6p8v-hvq8, MINI-rvhw-qmqf-m8pj, MINI-rxhc-rvwx-wwrm, MINI-v7f3-7h5v-7gmh, MINI-v7vq-4mv5-62c7, MINI-v9hh-x2g3-5wqq, MINI-vf34-g22c-gwh6, MINI-vfx2-jh3f-vgw2, MINI-vgp9-fm4f-jqx8, MINI-vh9m-c7x8-pchv, MINI-vmvm-hw2c-fmf5, MINI-vp7c-q773-9hph, MINI-vwwx-99c2-3m5q, MINI-vxf9-wh29-mh9m, MINI-w2c9-5842-534m, MINI-w357-x3r2-j45w, MINI-w52g-j8pf-4994, MINI-w8c4-g8gp-52mf, MINI-w8f7-mh8c-pmvr, MINI-wm24-fp26-978g, MINI-wpf3-5x9h-xv9w, MINI-wrx6-3936-f9c7, MINI-wxqv-xf28-ppmc, MINI-wxr7-2g6p-fx7g, MINI-x29c-5wwp-9v92, MINI-x4qv-gc42-7mr7, MINI-x634-hggp-98hh, MINI-x6q7-crph-qfm6, MINI-x96h-87qh-fgxr, MINI-xxwj-2rr5-mwf2, ROOT-APP-GOBINARY-CVE-2026-50151, UBUNTU-CVE-2026-50151, openSUSE-SU-2026:11291-1, openSUSE-SU-2026:11292-1 ## What is CVE-2026-50151? CVE-2026-50151 is a high-severity server-side request forgery vulnerability in oras-project oras-go, published on 17 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description oras-go is a Go library for managing OCI artifacts. Prior to 2.6.1, registry/remote/repository.go in blobStore.completePushAfterInitialPost follows a registry-controlled Location header during monolithic blob upload and reuses the Authorization header from the initial POST request for the subsequent PUT request, allowing a malicious registry to return a cross-host Location and receive the caller's credentials at an attacker-controlled endpoint. This issue is fixed in version 2.6.1. Weakness: CWE-918 (Server-Side Request Forgery) ## Which versions are affected by CVE-2026-50151? 3 open source packages ship an affected version, including oras.land/oras-go/v2. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `oras.land/oras-go/v2` | Go | All versions | 2.6.1 | | `oras.land/oras-go/v2` | Go | All versions | 2.6.1 | | `oras.land/oras-go/v2` | Go | All versions | 2.6.1 | | `helm` | openSUSE:Tumbleweed | All versions | 4.2.3-2.1 | | `helm3` | openSUSE:Tumbleweed | All versions | 3.21.3-2.1 | Products: Linuxfoundation Oras. ## How do I fix CVE-2026-50151? Upgrade oras.land/oras-go/v2 to 2.6.1 or later. ## Is CVE-2026-50151 being exploited? It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-50151 exists. ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2026-50151 and fix it if it is affected. What it is: CVE-2026-50151 is a high-severity server-side request forgery vulnerability in oras-project oras-go, published on 17 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-50151 exists. Affected packages and fixed versions: - oras.land/oras-go/v2 (Go): affected all versions; fixed in 2.6.1 - oras.land/oras-go/v2 (Go): affected all versions; fixed in 2.6.1 - oras.land/oras-go/v2 (Go): affected all versions; fixed in 2.6.1 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-2026-50151/ (Markdown: https://insights.sbomify.com/CVE-2026-50151/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2026-50151 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-50151 - OSV: https://osv.dev/vulnerability/CVE-2026-50151 --- From sbomify Insights: https://insights.sbomify.com/CVE-2026-50151/ Summaries are generated and may contain mistakes; the official description above is the record.