CVE catalog
CVE-2020-8252
libuv1: CVE-2020-8252
- Severity
- High · CVSS 8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.71% · Oct 25, 2026
The implementation of realpath in libuv < 10.22.1, < 12.18.4, and < 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libuv1 | sid | 1.53.0-1 | fixed |
| Debian | libuv1 | forky | 1.53.0-1 | fixed |
| Debian | libuv1 | trixie | 1.50.0-2 | fixed |
| Debian | libuv1 | bookworm | 1.44.2-1+deb12u1 | fixed |
| Debian | libuv1 | bookworm-security | 1.44.2-1+deb12u1 | fixed |
| Alpine | libuv | 3.12 | 1.38.1-r0 | fixed |
| Alpine | libuv | 3.13 | 1.39.0-r0 | fixed |
| Alpine | libuv | 3.14 | 1.39.0-r0 | fixed |
| Alpine | libuv | 3.15 | 1.39.0-r0 | fixed |
| Alpine | libuv | 3.16 | 1.39.0-r0 | fixed |
| Alpine | libuv | 3.17 | 1.39.0-r0 | fixed |
| Alpine | libuv | 3.18 | 1.39.0-r0 | fixed |
| Alpine | libuv | 3.19 | 1.39.0-r0 | fixed |
| Alpine | libuv | 3.20 | 1.39.0-r0 | fixed |
| Alpine | libuv | 3.21 | 1.39.0-r0 | fixed |
| Alpine | libuv | 3.22 | 1.39.0-r0 | fixed |
| Alpine | libuv | 3.23 | 1.39.0-r0 | fixed |
| Alpine | libuv | 3.24 | 1.39.0-r0 | fixed |
| Alpine | nodejs | 3.11 | 12.20.1-r0 | fixed |
| Alpine | nodejs | 3.12 | 12.18.4-r0 | fixed |
| Alpine | nodejs | 3.13 | 12.18.4-r0 | fixed |
| Alpine | nodejs | 3.14 | 12.18.4-r0 | fixed |
| Alpine | nodejs | 3.15 | 12.18.4-r0 | fixed |
| Alpine | nodejs | 3.16 | 12.18.4-r0 | fixed |
| Alpine | nodejs | 3.17 | 12.18.4-r0 | fixed |
| Alpine | nodejs | 3.18 | 12.18.4-r0 | fixed |
| Alpine | nodejs | 3.19 | 12.18.4-r0 | fixed |
| Alpine | nodejs | 3.20 | 12.18.4-r0 | fixed |
| Alpine | nodejs | 3.21 | 12.18.4-r0 | fixed |
| Alpine | nodejs | 3.22 | 12.18.4-r0 | fixed |
| Alpine | nodejs | 3.23 | 12.18.4-r0 | fixed |
| Alpine | nodejs | 3.24 | 12.18.4-r0 | fixed |
| Ubuntu | libuv1 | 20.04 | 1.30.1-1 | vulnerable |
| Ubuntu | libuv1 | 20.04 | 1.33.1-2 | vulnerable |
| Ubuntu | libuv1 | 20.04 | 1.33.1-2ubuntu2 | vulnerable |
| Ubuntu | libuv1 | 20.04 | 1.33.1-3ubuntu1 | vulnerable |
| Ubuntu | libuv1 | 20.04 | 1.34.2-1ubuntu1 | vulnerable |
| Ubuntu | libuv1 | 20.04 | 1.34.2-1ubuntu1.1 | fixed |
| Ubuntu | libuv1 | 20.04 | 1.30.1-1 | vulnerable |
| Ubuntu | libuv1 | 20.04 | 1.33.1-2 | vulnerable |
| Ubuntu | libuv1 | 20.04 | 1.33.1-2ubuntu2 | vulnerable |
| Ubuntu | libuv1 | 20.04 | 1.33.1-3ubuntu1 | vulnerable |
| Ubuntu | libuv1 | 20.04 | 1.34.2-1ubuntu1 | vulnerable |
| Ubuntu | libuv1 | 20.04 | 1.34.2-1ubuntu1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libuv1 | source | sid | 1.39.0-1 | unimportant | Not reported | Not reported |
| Debian | libuv1 | source | forky | 1.39.0-1 | unimportant | Not reported | Not reported |
| Debian | libuv1 | source | trixie | 1.39.0-1 | unimportant | Not reported | Not reported |
| Debian | libuv1 | source | bookworm | 1.39.0-1 | unimportant | Not reported | Not reported |
| Alpine | libuv | apk | 3.12 | 1.38.1-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | libuv | apk | 3.13 | 1.39.0-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | libuv | apk | 3.14 | 1.39.0-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | libuv | apk | 3.15 | 1.39.0-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | libuv | apk | 3.16 | 1.39.0-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | libuv | apk | 3.17 | 1.39.0-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | libuv | apk | 3.18 | 1.39.0-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | libuv | apk | 3.19 | 1.39.0-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | libuv | apk | 3.20 | 1.39.0-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | libuv | apk | 3.21 | 1.39.0-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | libuv | apk | 3.22 | 1.39.0-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | libuv | apk | 3.23 | 1.39.0-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | libuv | apk | 3.24 | 1.39.0-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.11 | 12.20.1-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.12 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.13 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.14 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.15 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.16 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.17 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.18 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.19 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.20 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.21 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.22 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.23 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Alpine | nodejs | apk | 3.24 | 12.18.4-r0 | Not reported | ALPINE-CVE-2020-8252 | Not reported |
| Ubuntu | libuv1 | deb | 20.04 | 1.34.2-1ubuntu1.1 | Not reported | UBUNTU-CVE-2020-8252 | Not reported |
| Ubuntu | libuv1 | deb | 20.04 | 1.34.2-1ubuntu1.1 | Not reported | USN-4548-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libuv1]Unknown
Details (4)
1.44.2-1+deb12u1· amd64 · bookwormFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · bookworm; dsa · libuv1 · debian · 12
1.44.2-1+deb12u1· arm64 · bookwormFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · bookworm; dsa · libuv1 · debian · 12
1.44.2-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · bookworm; dsa · libuv1 · debian · 12
1.44.2-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · bookworm; dsa · libuv1 · debian · 12
- [libuv1-dev]Unknown
Source package: [libuv1]
Details (4)
1.44.2-1+deb12u1· amd64 · bookwormFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · bookworm; dsa · libuv1 · debian · 12
1.44.2-1+deb12u1· arm64 · bookwormFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · bookworm; dsa · libuv1 · debian · 12
1.44.2-1+deb12u1· amd64 · bookworm-securityFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · bookworm; dsa · libuv1 · debian · 12
1.44.2-1+deb12u1· arm64 · bookworm-securityFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · bookworm; dsa · libuv1 · debian · 12
[Debian 13 (Trixie)]
- [libuv1-dev]Unknown
Source package: [libuv1]
Details (2)
1.50.0-2· amd64 · trixieFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · 13
1.50.0-2· arm64 · trixieFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · 13
- [libuv1-doc]Unknown
Source package: [libuv1]
Details (2)
1.50.0-2· all · trixieFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · 13
1.50.0-2· all · trixieFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · 13
- [libuv1t64]Unknown
Source package: [libuv1]
Details (2)
1.50.0-2· amd64 · trixieFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · 13
1.50.0-2· arm64 · trixieFixed · Fixed:
1.39.0-1dsa · libuv1 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2020_4272.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2020-8252]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-8252]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-8252]
- [https://osv.dev/vulnerability/USN-4548-1]
- [https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2022/icsa-22-111-03.json]
- [https://security-tracker.debian.org/tracker/CVE-2020-8252]
- [https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-8252.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2020/wid-sec-w-2023-0486.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]