CVE records

Every CVE as the CVE Program publishes it, refreshed every ten minutes, with NVD's analysis, CISA's known-exploited status and a healthcare tag. Subscribers get the CVEs that match their own systems on My program, by email as they are published. Where the data comes from: sources.

Updated under an hour ago ()

What this means for you

This week: 5,468 CVEs published, 357 critical, and 7 newly confirmed exploited. Add your stack to see whether any of them hit you.

Published in the last 7 days
5,468
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Critical, last 7 days
357
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Healthcare-tagged, last 7 days
4
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Known exploited (CISA KEV)
1,747
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Showing CVEs that name the product apache:log4j. Show all products

16 CVEs, showing 1 to 16
CVESeverityTitlePublished
CVE-2026-49844Medium 5.9Improper encoding of non-finite floating-point values during MapMessage JSON serialization in Apache Log4j API produces output that is not valid JSON.Jul 10, 2026
CVE-2026-34481High 7.5Apache Log4j's JsonTemplateLayout https://logging.apache.org/log4j/2.x/manual/json-template-layout.html , in versions up to and including 2.25.3, produces invalid JSON output when log events contain…Apr 10, 2026
CVE-2026-34480High 7.5Apache Log4j Core's XmlLayout https://logging.apache.org/log4j/2.x/manual/layouts.html#XmlLayout , in versions up to and including 2.25.3, fails to sanitize characters forbidden by the XML 1.0 specif…Apr 10, 2026
CVE-2026-34479High 7.5The Log4j1XmlLayout from the Apache Log4j 1-to-Log4j 2 bridge fails to escape characters forbidden by the XML 1.0 standard, producing malformed XML output.Apr 10, 2026
CVE-2026-34478High 7.5Apache Log4j Core's Rfc5424Layout https://logging.apache.org/log4j/2.x/manual/layouts.html#RFC5424Layout , in versions 2.21.0 through 2.25.3, is vulnerable to log injection via CRLF sequences due to…Apr 10, 2026
CVE-2026-34477Medium 5.9The fix for CVE-2025-68161 https://logging.apache.org/security.html#CVE-2025-68161 was incomplete: it addressed hostname verification only when enabled via the log4j2.sslVerifyHostName https://loggin…Apr 10, 2026
CVE-2025-68161Medium 4.8The Socket Appender in Apache Log4j Core versions 2.0-beta9 through 2.25.2 does not perform TLS hostname verification of the peer certificate, even when the verifyHostName https://logging.apache.org/…Dec 18, 2025
CVE-2022-23307
Healthcare
High 8.8A deserialization flaw in the Chainsaw component of Log4j 1 can lead to malicious code execution.
Assigned by apache
Jan 18, 2022
CVE-2022-23305
Healthcare
Critical 9.8SQL injection in JDBC Appender in Apache Log4j V1
Assigned by apache
Jan 18, 2022
CVE-2022-23302
Healthcare
High 8.8Deserialization of untrusted data in JMSSink in Apache Log4j 1.x
Assigned by apache
Jan 18, 2022
CVE-2021-45105
Healthcare
Medium 5.9Apache Log4j2 does not always protect from infinite recursion in lookup evaluation
Assigned by apache
Dec 18, 2021
CVE-2021-45046
Known exploited
Critical 9.0Apache Log4j2 Thread Context Message Pattern and Context Lookup Pattern vulnerable to a denial of service attack
Assigned by apache
Dec 14, 2021
CVE-2021-4104
Healthcare
High 7.5Deserialization of untrusted data in JMSAppender in Apache Log4j 1.2
Assigned by apache
Dec 14, 2021
CVE-2021-44228
Known exploited
Critical 10.0Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints
Assigned by apache
Dec 10, 2021
CVE-2020-9493Critical 9.8A deserialization flaw was found in Apache Chainsaw versions prior to 2.1.0 which could lead to malicious code execution.Jun 16, 2021
CVE-2017-5645Critical 9.8In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that,…
Assigned by apache
Apr 17, 2017

CVSS is the assigning CNA's score where it gives one, otherwise NVD's. The healthcare tag is a documented heuristic (a list of clinical and health IT vendors, and clinical terms in the description), not a classification. The CVE record is authoritative.

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