Apache CXF up to 3.6.11/4.1.7/4.2.2 JCacheCodeDataProvider toctou

Summaryinfo

A vulnerability described as critical has been identified in Apache CXF up to 3.6.11/4.1.7/4.2.2. Affected by this issue is some unknown functionality of the component JCacheCodeDataProvider. Such manipulation leads to toctou. This vulnerability is uniquely identified as CVE-2026-57818. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apache CXF up to 3.6.11/4.1.7/4.2.2. Affected by this issue is an unknown code block of the component JCacheCodeDataProvider. The manipulation with an unknown input leads to a toctou vulnerability. Using CWE to declare the problem leads to CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issue.

The advisory is shared for download at lists.apache.org. This vulnerability is handled as CVE-2026-57818 since 06/25/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/06/2026).

Upgrading to version 3.6.12, 4.1.8 or 4.2.3 eliminates this vulnerability.

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Productinfo

Type

• Application Server Software

Vendor

• Apache

Name

• CXF

Version

• 3.6.0
• 3.6.1
• 3.6.2
• 3.6.3
• 3.6.4
• 3.6.5
• 3.6.6
• 3.6.7
• 3.6.8
• 3.6.9
• 3.6.10
• 3.6.11
• 4.1.0
• 4.1.1
• 4.1.2
• 4.1.3
• 4.1.4
• 4.1.5
• 4.1.6
• 4.1.7
• 4.2.0
• 4.2.1
• 4.2.2

License

• open-source

Website

• Vendor: https://www.apache.org/

CPE 2.3info

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CPE 2.2info

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