Snyk test report

CVE-2026-31789

critical severity

Exploit: Not Defined

Package Manager: alpine:3.23
Vulnerable module: openssl/libcrypto3
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.45.0 and openssl/libcrypto3@3.5.5-r0

Detailed paths

Introduced through: docker-image|ghcr.io/dexidp/dex@v2.45.0 › openssl/libcrypto3@3.5.5-r0
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.45.0 › busybox/ssl_client@1.37.0-r30 › openssl/libcrypto3@3.5.5-r0
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.45.0 › apk-tools/apk-tools@3.0.3-r1 › apk-tools/libapk@3.0.3-r1 › openssl/libcrypto3@3.5.5-r0
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.45.0 › apk-tools/apk-tools@3.0.3-r1 › apk-tools/libapk@3.0.3-r1 › openssl/libssl3@3.5.5-r0 › openssl/libcrypto3@3.5.5-r0
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.45.0 › openssl/libssl3@3.5.5-r0
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.45.0 › busybox/ssl_client@1.37.0-r30 › openssl/libssl3@3.5.5-r0
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.45.0 › apk-tools/apk-tools@3.0.3-r1 › apk-tools/libapk@3.0.3-r1 › openssl/libssl3@3.5.5-r0

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Alpine. See How to fix? for Alpine:3.23 relevant fixed versions and status.

Issue summary: Converting an excessively large OCTET STRING value to a hexadecimal string leads to a heap buffer overflow on 32 bit platforms.

Impact summary: A heap buffer overflow may lead to a crash or possibly an attacker controlled code execution or other undefined behavior.

If an attacker can supply a crafted X.509 certificate with an excessively large OCTET STRING value in extensions such as the Subject Key Identifier (SKID) or Authority Key Identifier (AKID) which are being converted to hex, the size of the buffer needed for the result is calculated as multiplication of the input length by 3. On 32 bit platforms, this multiplication may overflow resulting in the allocation of a smaller buffer and a heap buffer overflow.

Applications and services that print or log contents of untrusted X.509 certificates are vulnerable to this issue. As the certificates would have to have sizes of over 1 Gigabyte, printing or logging such certificates is a fairly unlikely operation and only 32 bit platforms are affected, this issue was assigned Low severity.

The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

Remediation

Upgrade Alpine:3.23 openssl to version 3.5.6-r0 or higher.

CVE-2026-31789

Detailed paths

NVD Description

Remediation

References

Incorrect Authorization

Detailed paths

Overview

Workaround

Remediation

References

Improper Authentication

Detailed paths

Overview

Remediation

References

CVE-2026-28390

Detailed paths

NVD Description

Remediation

References

CVE-2026-28388

Detailed paths

NVD Description

Remediation

References

CVE-2026-28389

Detailed paths

NVD Description

Remediation

References

CVE-2026-28387

Detailed paths

NVD Description

Remediation

References

Infinite loop

Detailed paths

Overview

Remediation

References

Improper Check for Certificate Revocation

Detailed paths

Overview

Remediation

References

Incorrect Type Conversion or Cast

Detailed paths

Overview

Remediation

References

Missing Release of Resource after Effective Lifetime

Detailed paths

Overview

Remediation

References

Improper Authentication

Detailed paths

Overview

Remediation

References

Incorrect Type Conversion or Cast

Detailed paths

Overview

Remediation

References

Uncaught Exception

Detailed paths

Overview

Remediation

References

Untrusted Search Path

Detailed paths

Overview

Remediation

References

Untrusted Search Path

Detailed paths

Overview

Remediation