CVE-2026-27704 describes a directory traversal vulnerability in the Dart and Flutter SDKs, specifically affecting the pub client (dart pub and flutter pub) in versions prior to Dart 3.11.0 and Flutter 3.41.0. A malicious package archive could extract files outside the intended PUB_CACHE directory due to improper path normalization. This vulnerability has a CVSS score of 6.6 (Medium), indicating a network-exploitable flaw with low attack complexity that could lead to high confidentiality impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE. The fix involves normalizing file paths before writing, and all packages on pub.dev have been vetted, with new packages no longer permitted to contain symlinks.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.11.0CPE matchmatch criteria | cpe:2.3:a:dart:dart_software_development_kit:*:*:*:*:*:*:*:* | ||
< 3.41.0CPE matchmatch criteria | cpe:2.3:a:flutter:flutter:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.