CVE-2021-23926

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

6.21% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 92.9% of scored records. A rank, not a probability.

NVD base score

9.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-01-14 14:45Z5 YR AGO

Last updated

2025-02-13 16:27Z1 YR AGO

Reserved

2021-01-12

Assigning CNA

apache

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-776Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')Base

Data version

5.1

Document digest

322d187c69cf4255731fc15820b5adb265254c8bdc9f9c89ff520e7d733665b6

• poi.apache.orghttps://poi.apache.org/x_refsource_MISC
• issues.apache.orghttps://issues.apache.org/jira/browse/XMLBEANS-517x_refsource_MISC
• lists.apache.org[axis-java-dev] 20210312 xmlbeans 2.6.0 and CVE-2021-23926https://lists.apache.org/thread.html/r2dc5588009dc9f0310b7382269f932cc96cae4c3901b747dda1a7fed%40%3Cjava-dev.axis.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[axis-java-dev] 20210312 Re: xmlbeans 2.6.0 and CVE-2021-23926https://lists.apache.org/thread.html/rbb01d10512098894cd5f22325588197532c64f1c818ea7e4120d40c1%40%3Cjava-dev.axis.apache.org%3Emailing-listx_refsource_MLIST
• lists.debian.org[debian-lts-announce] 20210628 [SECURITY] [DLA 2693-1] xmlbeans security updatehttps://lists.debian.org/debian-lts-announce/2021/06/msg00024.htmlmailing-listx_refsource_MLIST
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2021.htmlx_refsource_MISC
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210513-0004/x_refsource_CONFIRM
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2022.htmlx_refsource_MISC