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TI-2026-53963 Aliases CVE-2026-77301GHSA-7q85-xj36-vmfc

adm-zip: Uncontrolled memory allocation via the declared uncompressed size (DoS)

Priority HIGH 72CWE-789Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 3 fixed, 5 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-789.

Summary

adm-zip is a JavaScript library for creating and extracting ZIP archives in Node.js. Prior to 0.6.1, getData() in zipEntry.js trusts an entry's central-directory uncompressed size and allocates output memory before validating that value against the actual compressed data and decompression result. A small crafted ZIP can declare a multi-gigabyte uncompressed size, causing Buffer.alloc and decompression handling to commit excessive resident memory before CRC validation reports an error. Applications that read entries from untrusted archives can therefore be terminated by the operating system or suffer service-wide memory exhaustion. This issue is fixed in version 0.6.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00609 49th percentileScored 2026-11-07
Fix Partial adm-zip (cthackers): 0.6.1adm-zip (npm): 0.6.1Red Hat: 4 advisoriesRed Hat: 3 fixed, 5 without a fix

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

VendorProductAffected versionsFixed inStatusSource
cthackersadm-zipbefore 0.6.10.6.1Patch availableCNA
—adm-zip (npm)before 0.6.10.6.1Patch availableGHSA-7q85-xj36-vmfc
  • adm-zip Vendorcthackers Affected before 0.6.1 Fixed in 0.6.1 Patch available CNA
  • adm-zip (npm) Vendor— Affected before 0.6.1 Fixed in 0.6.1 Patch available GHSA-7q85-xj36-vmfc

Remediation

  • Fix · CNA adm-zip (cthackers) Fixed in 0.6.1
  • Fix · GHSA-7q85-xj36-vmfc adm-zip (npm) Fixed in 0.6.1 Advisory →

Red Hat 4 advisories

  • RHSA-2026:95591 Released 2026-11-05 · Red Hat rating Important
    Cluster Observability Operator - 1.5
    • Cluster Observability Operator 1.5 registry.redhat.io/cluster-observability-operator/alertmanager-rhel9, registry.redhat.io/cluster-observability-operator/cluster-observability-rhel9-operator, registry.redhat.io/cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9 +16
  • RHSA-2026:95081 Released 2026-11-04 · Red Hat rating Important
    Cluster Observability Operator - 1.5
    • Cluster Observability Operator 1.5 registry.redhat.io/cluster-observability-operator/alertmanager-rhel9, registry.redhat.io/cluster-observability-operator/cluster-observability-rhel9-operator, registry.redhat.io/cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9 +16
  • RHSA-2026:92510 Released 2026-10-29 · Red Hat rating Critical
    RHOAI 3.4.6 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-cli-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9 +47
Show 1 more Red Hat advisories
  • RHSA-2026:86675 Released 2026-10-21 · Red Hat rating Important
    Ansible plug-ins for Red Hat Developer Hub Product Release Update
    • Red Hat Ansible Automation Platform 2.2 registry.redhat.io/ansible-automation-platform/automation-portal

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Advanced Cluster Management for Kubernetes 2AffectedNo fix planned: Out of support scope
Red Hat Build of Podman DesktopAffectedNo fix yet
Red Hat Fuse 7AffectedNo fix planned: Out of support scope
Red Hat OpenShift AI (RHOAI)AffectedNo fix yet
Red Hat OpenShift Container Platform 4AffectedNo fix yet
Cluster Observability Operator 1.5Fixed RHSA-2026:95081, RHSA-2026:95591
Red Hat Ansible Automation Platform 2.2Fixed RHSA-2026:86675
Red Hat OpenShift AI 3.4Fixed RHSA-2026:92510
Not affected: 9 products
  • Cluster Observability Operator 1.5
  • Cost Management On Premise
  • Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Developer Hub 1
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat OpenShift AI 3.4
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenShift Container Platform 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-77301
  2. 2026-10-03 Alias added: GHSA-7q85-xj36-vmfc
  3. 2026-10-09 Affected versions changed · Red Hat
  4. 2026-10-10 Affected versions changed · Red Hat
  5. 2026-10-16 Affected versions changed · Red Hat
  6. 2026-10-20 Affected versions changed · Red Hat
  7. 2026-10-21 Fix available: RHSA-2026:86675 · Red Hat
  8. 2026-10-21 Fix available: Red Hat Ansible Automation Platform 2.2 · Red Hat
  9. 2026-10-23 Affected versions changed · Red Hat
  10. 2026-10-27 Affected versions changed · Red Hat
  11. 2026-10-30 Fix available: RHSA-2026:92510 · Red Hat
  12. 2026-10-30 Fix available: Red Hat OpenShift AI 3.4 · Red Hat
  13. 2026-10-30 Affected versions changed · Red Hat
  14. 2026-11-04 Fix available: RHSA-2026:95081 · Red Hat
  15. 2026-11-04 Fix available: Cluster Observability Operator 1.5 · Red Hat
  16. 2026-11-06 Affected versions changed · Red Hat
  17. 2026-11-06 Fix available: RHSA-2026:95591 · Red Hat

References

Other 4

  • TI-2026-78715 Denial of service in adm-zip via unhandled error in inflateAsync CVSS 4.0HIGH 8.7
  • TI-2026-78716 Decompression bomb guard bypass in adm-zip exhausts memory CVSS 4.0MEDIUM 6.9
  • TI-2026-78717 Duplicate ZIP entry names bypass validation in adm-zip CVSS 4.0HIGH 8.2
  • TI-2026-67762 adm-zip extraction keeps setuid bits from untrusted ZIP files CVSS 3.1HIGH 7.1
  • TI-2026-62130 adm-zip 0.5.14 through 0.6.0 Denial of Service via Zero Declared Uncompressed Size CVSS 4.0HIGH 8.7
  • TI-2026-78718 Privilege escalation in adm-zip via setuid bits on extracted files CVSS 4.0MEDIUM 6.9
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences