Path traversal in decompress
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- Low · High · Low
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
All versions of the package decompress are vulnerable to Arbitrary File Write via Archive Extraction (Zip Slip) when extracting a ZIP archive containing two entries with the same path - the first being a symlink to an arbitrary target and the second being a regular file - the file content is written through the symlink to the target location outside the output directory. This is due to the microtask processing order that checks readlink for the second file before resolving symlink for the first file. An attacker can write arbitrary file on the host filesystem potentially leading to remote code execution by providing a specially crafted ZIP archive. **Note:** This bypasses all existing path traversal protections including preventWritingThroughSymlink, added as a part of the fix for [CVE-2020-12265](https://security.snyk.io/vuln/SNYK-JS-DECOMPRESS-557358).
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | decompress | all versions | — | No fix listed | CNA |
| — | decompress (npm) | up to 4.2.1 | — | No fix listed | GHSA-h39j-r5qq-r9mm |
- decompress Vendor— Affected all versions Fixed in — No fix listed CNA
- decompress (npm) Vendor— Affected up to 4.2.1 Fixed in — No fix listed GHSA-h39j-r5qq-r9mm
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Build of Keycloak | Affected | No fix planned: Will not fix |
Not affected: 3 products
- Red Hat Advanced Cluster Management for Kubernetes 2
- Red Hat Enterprise Linux 8
- Red Hat Hardened Images
Timeline
- 2026-10-02 Threatist record created from CVE-2026-10732
- 2026-10-03 Alias added: GHSA-h39j-r5qq-r9mm
References
Other 6
- https://gist.github.com/Alemmi/409c3cc148c39522c6d6a8538b0e1f9e
- https://github.com/kevva/decompress/pull/112
- https://access.redhat.com/security/cve/CVE-2026-10732
- https://bugzilla.redhat.com/show_bug.cgi?id=2485376
- https://github.com/kevva/decompress
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-10732.json
Sources
- CVE-2026-10732 · CVE Program
- CVE-2026-10732 · NVD
- FIRST EPSS
- GHSA-h39j-r5qq-r9mm · GitHub Advisory Database · CC BY 4.0
- CVE-2026-10732 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences