HOMEVULNERABILITIESCVE-2026-42576
MEDIUM

CVE-2026-42576

CWE-704Published: May 9, 2026· Updated: May 13, 2026

6.5
CVSS v3.1
EPSS:0.03%probability of exploitation in 30 daysPercentile:9.4th

Official Description

apko allows users to build and publish OCI container images built from apk packages. Prior to version 1.2.7, DiscoverKeys in pkg/apk/apk/implementation.go unconditionally type-asserts JWKS keys as *rsa.PublicKey without checking the key type. If a repository JWKS endpoint returns a non-RSA key (e.g. EC), the unchecked assertion panics and crashes apko. This affects any workflow that initializes the APK database and fetches repository keys. This issue has been patched in version 1.2.7.

NVD Source

Technical Analysis

CVE-2026-42576 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected Vendors & Products

Mentioned vendors (from description):
Go
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
External links open in a new tab. Always verify in a controlled environment before use.

All References (3)

Quick Facts

CVE IDCVE-2026-42576
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-704
CISA KEVNo
EPSS (30d)0.03%
PublishedMay 9, 2026

Related CVEs (CWE-704)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2026-42576 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
CVE-2026-42576 — CVSS 6.5 MEDIUM | CTIWATCH.COM