SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-23926

The XML parsers used by XMLBeans up to version 2.6.0 did not set the properties needed to protect the user from malicious XML input.

CRITICAL 9.1EPSS 6.29%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (6.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The XML parsers used by XMLBeans up to version 2.6.0 did not set the properties needed to protect the user from malicious XML input. Vulnerabilities include possibilities for XML Entity Expansion attacks. Affects XMLBeans up to and including v2.6.0.

CVSS 3.1
9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS
6.29% probability · 94th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-776
Affected
apache/xmlbeans · netapp/oncommand unified manager core package · netapp/snap creator framework · netapp/snapmanager · debian/debian linux · oracle/middleware common libraries and tools · oracle/peoplesoft enterprise peopletools
Source
security@apache.org
EPSS trend
0%5%10%26 October 2026: 6.29%26 October 202626 October 2026

EPSS 6.3% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.