---
title: "CVE-2026-113582: Apache Abdera - XML External Entity Injection"
description: "Apache Abdera contains an XML external entity injection caused by improper restriction of XML external entity references, letting attackers access sensitive data or make server-side requests when parsing attacker-controlled XML, exploit requires attacker-controlled XML input."
url: https://panop.io/threat-heartbeat/CVE-2026-113582/
---

# CVE-2026-113582 Apache Abdera - XML External Entity Injection

Apache Abdera contains an XML external entity injection caused by improper restriction of XML external entity references, letting attackers access sensitive data or make server-side requests when parsing attacker-controlled XML, exploit requires attacker-controlled XML input.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-113582)

## Details

Type

XML External Entity Injection

Impact

Information Disclosure, Server Side Request Forgery

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Published

22 October 2026

Updated

23 October 2026

Weakness

[CWE-611](https://cwe.mitre.org/data/definitions/611.html)

## Vendor fix

Migrate to a maintained alternative or ensure untrusted XML cannot reach the affected Abdera parser.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-113582](https://nvd.nist.gov/vuln/detail/CVE-2026-113582)
- [https://attic.apache.org/projects/abdera.html](https://attic.apache.org/projects/abdera.html)
- [https://lists.apache.org/thread.html/j32tow7bhfnn2p0obsqy1mhg1qs7hq91](https://lists.apache.org/thread.html/j32tow7bhfnn2p0obsqy1mhg1qs7hq91)
- [http://www.openwall.com/lists/oss-security/2026/10/22/10](http://www.openwall.com/lists/oss-security/2026/10/22/10)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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