Snyk test report

CVE-2026-31789

critical severity

Exploit: Not Defined

Package Manager: alpine:3.21
Vulnerable module: openssl/libcrypto3
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.43.0 and openssl/libcrypto3@3.3.3-r0

Detailed paths

Introduced through: docker-image|ghcr.io/dexidp/dex@v2.43.0 › openssl/libcrypto3@3.3.3-r0
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.43.0 › apk-tools/apk-tools@2.14.6-r3 › openssl/libcrypto3@3.3.3-r0
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.43.0 › busybox/ssl_client@1.37.0-r12 › openssl/libcrypto3@3.3.3-r0
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.43.0 › apk-tools/apk-tools@2.14.6-r3 › openssl/libssl3@3.3.3-r0 › openssl/libcrypto3@3.3.3-r0
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.43.0 › openssl/libssl3@3.3.3-r0
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.43.0 › apk-tools/apk-tools@2.14.6-r3 › openssl/libssl3@3.3.3-r0
Introduced through: docker-image|ghcr.io/dexidp/dex@v2.43.0 › busybox/ssl_client@1.37.0-r12 › openssl/libssl3@3.3.3-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:3.21 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:3.21 openssl to version 3.3.7-r0 or higher.

Type	Origin	Description
Stored	Server	The malicious code is inserted in the application (usually as a link) by the attacker. The code is activated every time a user clicks the link.
Reflected	Server	The attacker delivers a malicious link externally from the vulnerable web site application to a user. When clicked, malicious code is sent to the vulnerable web site, which reflects the attack back to the user’s browser.
DOM-based	Client	The attacker forces the user’s browser to render a malicious page. The data in the page itself delivers the cross-site scripting data.
Mutated		The attacker injects code that appears safe, but is then rewritten and modified by the browser, while parsing the markup. An example is rebalancing unclosed quotation marks or even adding quotation marks to unquoted parameters.

CVE-2026-31789

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NVD Description

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Incorrect Authorization

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Workaround

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Improper Authentication

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CVE-2025-69421

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CVE-2026-28390

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CVE-2026-28389

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CVE-2026-28388

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CVE-2026-28387

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Allocation of Resources Without Limits or Throttling

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Infinite loop

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Server-side Request Forgery (SSRF)

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Improper Check for Certificate Revocation

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Improper Handling of Unexpected Data Type

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Details

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Incorrect Type Conversion or Cast

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Missing Release of Resource after Effective Lifetime

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Improper Authentication

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Overview