CVE-2021-23901

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

4.36% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 90.4% 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:H/A:N

NVD analysis status

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

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2021-01-25 09:25Z5 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-611Improper Restriction of XML External Entity ReferenceBase

Data version

5.1

Document digest

5a95f1dd0ca23d013c2ebe0b1b871f64b4baac81927c29266cac8b83cdd8801b

• lists.apache.orghttps://lists.apache.org/thread.html/r090321840b44cc91086c4e317bf2baffa270749dde6c1273b6567f7c%40%3Cdev.nutch.apache.org%3Ex_refsource_MISC
• issues.apache.orghttps://issues.apache.org/jira/browse/NUTCH-2841x_refsource_MISC
• lists.apache.org[nutch-dev] 20210125 Re: CVE-2021-23901: An XML external entity (XXE) injection vulnerability exists in the Nutch DmozParserhttps://lists.apache.org/thread.html/r7ddfd680aa7ea001ca8da63bb23e3f8caa095a8b4f2261e46bade5c7%40%3Cdev.nutch.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[announce] 20210124 CVE-2021-23901: An XML external entity (XXE) injection vulnerability exists in the Nutch DmozParserhttps://lists.apache.org/thread.html/r5e2f7737b42c73a3325f3c2c8cdee1ec27631b3a0e144104d84d70e6%40%3Cannounce.apache.org%3Emailing-listx_refsource_MLIST
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210513-0003/x_refsource_CONFIRM