yauzl 3.2.0 - Denial of Service via Off-by-One Error in NTFS Timestamp Parser
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 1 fixed, 14 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
yauzl (aka Yet Another Unzip Library) version 3.2.0 for Node.js contains an off-by-one error in the NTFS extended timestamp extra field parser within the getLastModDate() function. The while loop condition checks cursor < data.length + 4 instead of cursor + 4 <= data.length, allowing readUInt16LE() to read past the buffer boundary. A remote attacker can cause a denial of service (process crash via ERR_OUT_OF_RANGE exception) by sending a crafted zip file with a malformed NTFS extra field. This affects any Node.js application that processes zip file uploads and calls entry.getLastModDate() on parsed entries. Fixed in version 3.2.1.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| thejoshwolfe | yauzl | 3.2.0 to before 3.2.1 | 3.2.1 | Patch available | CNA |
| — | yauzl (npm) | 3.2.0 to before 3.2.1 | 3.2.1 | Patch available | GHSA-gmq8-994r-jv83 |
- yauzl Vendorthejoshwolfe Affected 3.2.0 to before 3.2.1 Fixed in 3.2.1 Patch available CNA
- yauzl (npm) Vendor— Affected 3.2.0 to before 3.2.1 Fixed in 3.2.1 Patch available GHSA-gmq8-994r-jv83
Remediation
- Fix · CNA yauzl (thejoshwolfe) Fixed in 3.2.1
- Fix · GHSA-gmq8-994r-jv83 yauzl (npm) Fixed in 3.2.1 Advisory →
Red Hat 1 advisory
- RHSA-2026:24841 Released 2026-06-09 · Red Hat rating ModerateRed Hat Developer Hub 1.10.0 release.
- Red Hat Developer Hub 1.10 registry.redhat.io/rhdh/rhdh-hub-rhel9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Cryostat 4 | Affected | No fix yet: Fix deferred |
| Node HealthCheck Operator | Affected | No fix yet: Fix deferred |
| Red Hat Build of Podman Desktop | Affected | No fix yet: Fix deferred |
| Red Hat Developer Hub 1 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat Fuse 7 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Dev Spaces | Affected | No fix yet: Fix deferred |
| Red Hat Openshift Data Foundation 4 | Affected | No fix yet: Fix deferred |
| Red Hat Trusted Profile Analyzer | Affected | No fix yet: Fix deferred |
| Self-service automation portal 2 | Affected | No fix yet: Fix deferred |
| Red Hat Developer Hub 1.10 | Fixed | RHSA-2026:24841 |
Not affected: 1 product
- Red Hat Developer Hub 1.10
Timeline
- 2026-10-02 Threatist record created from CVE-2026-31988
- 2026-10-03 Alias added: GHSA-gmq8-994r-jv83
- 2026-10-08 EPSS moved to the 50th–90th percentile
- 2026-10-25 EPSS moved to the below the 50th percentile
- 2026-10-27 Affected versions changed · Red Hat
References
Sources
- CVE-2026-31988 · CVE Program
- CVE-2026-31988 · NVD
- FIRST EPSS
- GHSA-gmq8-994r-jv83 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-31988 · 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