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Fencer Intel
high 7.5

CVE-2026-115907 json

zip: legacy Shrink/Reduce/Implode decoder: denial of service from attacker-controlled ZIP64 uncompressed size

published 14d ago modified 10d ago also GHSA-9hj8-73fh-9963 , EUVD-2026-109984

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 28%
public exploits
0
none known

Summary

zip is a zip library for Rust that supports reading and writing simple ZIP files. From 5.1.0 until 9.0.0, applications built with the legacy-zip feature can reserve output capacity from an attacker-controlled ZIP64 uncompressed size before validating the compressed stream. The ShrinkDecoder path in src/legacy/shrink.rs can panic with a capacity overflow during ZipArchive::extract, and the Reduce and Implode decoders contain the same unbounded preallocation pattern. An unhandled panic can terminate an archive-processing service. This issue is fixed in version 9.0.0.

Patch / fix

  • crates.io zip 9.0.0
  • rust-keylime SLE Micro 5.5 0.2.10+12-150500.3.22.1
  • rust-keylime SLE Micro 5.4 0.2.10+12-150400.3.22.1

suse advisories SUSE-SU-2026:4931-1SUSE-SU-2026:4930-1

  • python-uv openSUSE Tumbleweed 0.13.6-1.1

opensuse advisories openSUSE-SU-2026:12307-1

Is CVE-2026-115907 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-115907 updated cvss 7.5

zip: zip: Denial of Service via unbounded memory preallocation

  • Red Hat Ansible Automation Orchestrator 2026 ansible-automation-platform/automation-orchestrator-backend-rhel9 Red Hat Confidential Cluster Operator confidential-clusters-beta/compute-pcrs-rhel9, confidential-clusters-beta/registration-server-rhel9, confidential-clusters-beta/attestation-key-register-rhel9, confidential-clusters-beta/confidential-cluster-rhel9-operator, confidential-clusters-beta/confidential-cluster-operator-bundle Red Hat Confidential Compute Attestation agent-sandbox/agent-sandbox-router, openshift-sandboxed-containers/osc-podvm-builder-rhel9
    affected: workaround, no fix available
  • Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-to-dataverse-exporter-rhel9
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-26/hub-rhel9, ansible-automation-platform-27/hub-rhel9, ansible-automation-platform-24/lightspeed-rhel8, ansible-automation-platform-25/lightspeed-rhel8, ansible-automation-platform-26/controller-rhel9, ansible-automation-platform-26/de-minimal-rhel9, +11 more
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Discovery 2 discovery/discovery-server-rhel9 Red Hat Enterprise Linux 9 rust, cargo, clippy, rustfmt, rust-gdb, rust-src, +9 more Red Hat Enterprise Linux 10 rust 1.92.0-2.el10_2, keylime-agent-rust 0.2.10-2.el10 Red Hat Enterprise Linux AI (RHEL AI) 3 rust 1.92.0-2.el10_2 Red Hat Lightspeed Services for OCP lightspeed-services-ocp/ocp-rules-rhel9 Red Hat OpenShift AI (RHOAI) rhoai/odh-feature-server-rhel9, rhoai/odh-ml-pipelines-runtime-generic-rhel9, rhoai/odh-model-registry-job-async-upload-rhel9
    +1 more products
    Red Hat Satellite 6 satellite/iop-vmaas-rhel9, satellite/iop-advisor-engine-rhel9, satellite/iop-host-inventory-rhel9, satellite/iop-advisor-backend-rhel9, satellite/iop-vulnerability-engine-rhel9
    affected: workaround, no fix available
  • Red Hat Trusted Profile Analyzer rhtpa/rhtpa-rhel10, rhtpa/rhtpa-trustification-service-rhel9
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat Pen Drive Powered by Red Hat Lightspeed pen-drive/pen-drive-scanner-rhel9
    not affected: component not present
  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-26/gateway-rhel9, ansible-automation-platform-27/gateway-rhel9, ansible-automation-platform-26/mcp-tools-rhel9, ansible-automation-platform-27/mcp-tools-rhel9, ansible-automation-platform-26/ee-minimal-rhel9, ansible-automation-platform-26/lightspeed-rhel9, +7 more
    not affected: vulnerable code not in execute path
  • Red Hat Ansible Automation Platform Ansible Core 2 ansible-automation-platform/ee-minimal-rhel8, ansible-automation-platform/ee-minimal-rhel9, ansible-automation-platform-tech-preview/ee-minimal-rhel8, ansible-automation-platform-tech-preview/ee-minimal-rhel9 Red Hat Enterprise Linux 8 rls, rust, cargo, clippy, firefox, rustfmt, +12 more
    not affected: vulnerable code not present
show 3 more
  • Red Hat Enterprise Linux 9 goose, firefox, firefox-x11, thunderbird, keylime-agent-rust, goose 1.45.0-1.el10_2, +3 more Red Hat Enterprise Linux 10 goose 1.45.0-1.el10_2, firefox 153.5.0-1.el10_2, thunderbird 140.17.0-1.el10_2 Red Hat Enterprise Linux command line assistant rhel-cla/rhel-knowledge-bridge-rhel10
    not affected: vulnerable code not in execute path
  • Red Hat Hardened Images rust 1.92.0-2.el10_2, ruff 0.15.11-1.1.hum1, openshell 0.1.4-0.1.hum1, rust-add-determinism 0.7.3-3.1.hum1
    not affected: component not present
  • Red Hat Quay 3 quay/quay-rhel8, quay/quay-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
10d ago

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/zip-rs/zip2/security/advisories/GHSA-9hj8-73fh-9963 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
crates.io zip
>=5.1.0, <9.0.0
9.0.0

Affected products

  • zip-rs zip2

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-789 Memory Allocation with Excessive Size Value

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.