# CVE-2025-0913: Inconsistent handling of O_CREATE|O_EXCL on Unix and Windows in os in syscall > Inconsistent symlink handling in Go's os.OpenFile on Windows allows bypassing O_EXCL checks, potentially leading to unintended file creation or modification. - **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Local or same network only - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 11 Jun 2025 - **Updated:** 11 Jun 2025 - **Also known as:** AZL-78978, AZL-98823, BELL-CVE-2025-0913, BIT-golang-2025-0913, CLEANSTART-2026-DG53336, CLEANSTART-2026-DP59961, ECHO-6c2b-4775-07f5, GHSA-jw54-c8rr-pjpq, GO-2025-3750, MINI-2725-w8cw-3jqv, MINI-47jr-4hq5-qhwf, MINI-48q5-3mw4-65cx, MINI-4jpj-xmxj-8c94, MINI-4r87-p4g4-6m3h, MINI-5p5m-vmhp-r6pq, MINI-63pf-9wv7-cj5f, MINI-67q6-mc94-48c2, MINI-68wh-hqw7-ghg6, MINI-6gcw-rxcx-9vm6, MINI-6mpx-33hg-cj3p, MINI-6pvr-r6mp-9fw8, MINI-6wmr-r3gw-mx2v, MINI-75xv-8887-vjjp, MINI-84w8-7227-g875, MINI-8p47-xwrv-746c, MINI-8r52-wxqh-6fhj, MINI-8rfh-22c5-44w5, MINI-92fq-whg4-xjrp, MINI-95cx-7j92-cjfg, MINI-96vj-f6vw-5qvc, MINI-9c6r-7jx6-qfcf, MINI-9q54-qc5w-2589, MINI-c3gm-f368-xrr4, MINI-c8rf-54jw-44r6, MINI-cg2h-jg4w-5jh6, MINI-chqr-2jmv-jr7p, MINI-f2gx-v3j4-f3v8, MINI-frc3-9xf6-2x25, MINI-fwm8-gcj8-2r6q, MINI-g6f2-2rvw-q49f, MINI-g89h-hwfm-684r, MINI-gv74-c888-4mjq, MINI-hqj6-qcvf-99jm, MINI-j286-79mg-mcvp, MINI-j9pw-wg58-wrw6, MINI-jwv9-v38x-qx6r, MINI-m6w9-hp59-c6w8, MINI-mq5p-p8xh-xg7x, MINI-p6wv-j3fq-fmr4, MINI-pv95-6m6r-68m4, MINI-q5rq-pq36-3wxm, MINI-q8r8-8f53-wp2m, MINI-qj5w-9pxj-f4gc, MINI-qmp6-hr87-26pp, MINI-qw5j-w5m9-x9w7, MINI-rcwq-ggwq-fm4f, MINI-rmx7-qh6f-96vh, MINI-rrcf-q9rw-5h2q, MINI-v98w-p57r-wg8q, MINI-vf2v-9jj6-q647, MINI-vg39-9p74-hhg9, MINI-w76g-m2w8-92hq, MINI-wpxc-qxgv-2chc, MINI-wv7h-5pvg-mwq6, MINI-x84w-6m68-3jcg, MINI-x8mx-99h4-4mr4, UBUNTU-CVE-2025-0913 ## What is CVE-2025-0913? CVE-2025-0913 is a medium-severity path traversal vulnerability in Golang Go, published on 11 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim. ### Official description os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink. Weakness: CWE-59 (Improper Link Resolution Before File Access) ## Which versions are affected by CVE-2025-0913? 2 open source packages ship an affected version, including golang and stdlib. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `golang` | Bitnami | All versions | 1.23.10, 1.24.4 | | `stdlib` | Go | All versions | 1.23.10, 1.24.4 | Products: Golang Go. ## How do I fix CVE-2025-0913? Upgrade golang to a fixed version for your release line: 1.23.10 or 1.24.4. ## Is CVE-2025-0913 being exploited? There is no known exploitation of CVE-2025-0913 in the wild and no public exploit code. ## Other vulnerabilities in Golang Go - [CVE-2020-0601](https://insights.sbomify.com/CVE-2020-0601/): Microsoft Windows CryptoAPI Spoofing (high 8.1, exploited in the wild) - [CVE-2026-27143](https://insights.sbomify.com/CVE-2026-27143/): Missing bound checks can lead to memory corruption in safe Go in cmd/compile (critical 9.8) - [CVE-2024-24790](https://insights.sbomify.com/CVE-2024-24790/): Unexpected behavior from Is methods for IPv4-mapped IPv6 addresses in net/netip (critical 9.8) - [CVE-2023-39320](https://insights.sbomify.com/CVE-2023-39320/): Arbitrary code execution via go.mod toolchain directive in cmd/go (critical 9.8) - [CVE-2023-24540](https://insights.sbomify.com/CVE-2023-24540/): Improper handling of JavaScript whitespace in html/template (critical 9.8) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2025-0913 and fix it if it is affected. What it is: CVE-2025-0913 is a medium-severity path traversal vulnerability in Golang Go, published on 11 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2025-0913 in the wild and no public exploit code. Affected packages and fixed versions: - golang (Bitnami): affected all versions; fixed in 1.23.10, 1.24.4 - stdlib (Go): affected all versions; fixed in 1.23.10, 1.24.4 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-2025-0913/ (Markdown: https://insights.sbomify.com/CVE-2025-0913/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2025-0913 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-0913 - OSV: https://osv.dev/vulnerability/CVE-2025-0913 --- From sbomify Insights: https://insights.sbomify.com/CVE-2025-0913/ Summaries are generated and may contain mistakes; the official description above is the record.