Apache Abdera Parser xml external entity reference

Summaryinfo

A vulnerability was found in Apache Abdera. It has been rated as critical. The affected element is an unknown function of the component Parser. This manipulation causes xml external entity reference. This vulnerability only affects products that are no longer supported by the maintainer. The identification of this vulnerability is CVE-2026-113582. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in Apache Abdera (version unknown) and classified as critical. Affected by this vulnerability is an unknown function of the component Parser. The manipulation with an unknown input leads to a xml external entity reference vulnerability. The CWE definition for the vulnerability is CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

UNSUPPORTED WHEN ASSIGNED Improper restriction of XML external entity references in Apache Abdera allows an attacker to access sensitive data or make server-side requests when an application parses attacker-controlled XML with Abdera. This issue affects Apache Abdera: all versions. Apache Abdera is retired and no longer supported, so we do not plan to release a version that fixes this issue. Users are recommended to migrate to a maintained alternative. Applications that cannot migrate should ensure that untrusted XML cannot reach the affected Abdera parser or JDBC adapter parsing paths. Actively maintained downstream products may still be impacted if they include an affected Abdera artifact. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

It is possible to read the advisory at attic.apache.org. This vulnerability is known as CVE-2026-113582 since 10/20/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/22/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Apache

Name

• Abdera

License

• open-source

Support

• end of life

Website

• Vendor: https://www.apache.org/

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