Skip to content
Fencer Intel
medium 6.5

CVE-2026-115906 json

zip: AES Entry HMAC Authentication Bypass on Premature EOF

published 14d ago modified 10d ago also GHSA-8hxf-qr8p-62x4 , EUVD-2026-109983

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits
0
none known

Summary

zip is a zip library for Rust that supports reading and writing simple ZIP files. From 0.6.0 until 9.0.0, the AES entry reader in src/aes.rs verifies its HMAC only when the attacker-controlled data counter reaches zero. If the underlying bounded reader reaches the real end of the archive while data_remaining is still positive, or if an encrypted entry has no payload, the reader can return a clean end of stream without reading and comparing the authentication tag. Applications using by_index_decrypt, by_name_decrypt, by_path_decrypt, or password-enabled by_index_with_options can therefore accept modified plaintext without an authentication error. 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

Is CVE-2026-115906 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-2026-115906 updated cvss 6.5

zip: zip: Integrity verification bypass via unverified authentication tag

  • 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 Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-to-dataverse-exporter-rhel9 Red Hat Pen Drive Powered by Red Hat Lightspeed pen-drive/pen-drive-scanner-rhel9
    affected: no fix available “Fix deferred”
  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-26/hub-rhel9, ansible-automation-platform-27/hub-rhel9, 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, +24 more 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
    affected: no fix available, no fix planned “Out of support scope”
  • Red Hat Discovery 2 discovery/discovery-server-rhel9 Red Hat Enterprise Linux 8 rls, rust, cargo, clippy, firefox, rustfmt, +12 more Red Hat Enterprise Linux 9 rust, cargo, goose, clippy, firefox, rustfmt, +18 more Red Hat Enterprise Linux 10 rust 1.92.0-2.el10_2, goose 1.45.0-1.el10_2, firefox 153.5.0-1.el10_2, thunderbird 140.17.0-1.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 Enterprise Linux command line assistant rhel-cla/rhel-knowledge-bridge-rhel10
    +2 more products
    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
    affected: no fix available “Fix deferred”
  • Red Hat Quay 3 quay/quay-rhel8, quay/quay-rhel9
    affected: no fix available, no fix planned “Out of support scope”
  • 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 Red Hat Trusted Profile Analyzer rhtpa/rhtpa-rhel10, rhtpa/rhtpa-trustification-service-rhel9
    affected: no fix available “Fix deferred”
  • 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 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
no
Technical impact
partial
Assessed
10d ago

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/zip-rs/zip2/security/advisories/GHSA-8hxf-qr8p-62x4 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
crates.io zip
>=0.6.0, <9.0.0
9.0.0

Affected products

  • zip-rs zip2

Classification

Weakness
  • CWE-354 Improper Validation of Integrity Check Value
  • CWE-1284 Improper Validation of Specified Quantity in Input

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.