Improper validation of certificate with host mismatch in Apache Log4j SMTP appender prior to version 2.13.2. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender.
Update org.apache.logging.log4j:log4j to 2.13.2; org.apache.logging.log4j:log4j to 2.12.3; org.apache.logging.log4j:log4j to 2.3.2; org.apache.logging.log4j:log4j-core to 2.13.2; org.apache.logging.log4j:log4j-core to 2.12.3; org.apache.logging.log4j:log4j-core to 2.3.2 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanImproper validation of certificate with host mismatch in Apache Log4j SMTP appender affects org.apache.logging.log4j:log4j (maven), org.apache.logging.log4j:log4j (maven), org.apache.logging.log4j:log4j (maven), org.apache.logging.log4j:log4j-core (maven), org.apache.logging.log4j:log4j-core (maven), org.apache.logging.log4j:log4j-core (maven). Severity is low. Improper validation of certificate with host mismatch in Apache Log4j SMTP appender prior to version 2.13.2. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender.
AI coding agents often install or upgrade packages automatically in maven. A low vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|---|---|
Improper validation of certificate with host mismatch in Apache Log4j SMTP appender prior to version 2.13.2. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender.
Update org.apache.logging.log4j:log4j to 2.13.2; org.apache.logging.log4j:log4j to 2.12.3; org.apache.logging.log4j:log4j to 2.3.2; org.apache.logging.log4j:log4j-core to 2.13.2; org.apache.logging.log4j:log4j-core to 2.12.3; org.apache.logging.log4j:log4j-core to 2.3.2 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanImproper validation of certificate with host mismatch in Apache Log4j SMTP appender affects org.apache.logging.log4j:log4j (maven), org.apache.logging.log4j:log4j (maven), org.apache.logging.log4j:log4j (maven), org.apache.logging.log4j:log4j-core (maven), org.apache.logging.log4j:log4j-core (maven), org.apache.logging.log4j:log4j-core (maven). Severity is low. Improper validation of certificate with host mismatch in Apache Log4j SMTP appender prior to version 2.13.2. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender.
AI coding agents often install or upgrade packages automatically in maven. A low vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|---|---|
| org.apache.logging.log4j:log4jmaven |
|---|
| >=2.13.0,<2.13.2 |
| 2.13.2 |
| org.apache.logging.log4j:log4jmaven | >=2.4.0,<2.12.3 | 2.12.3 |
|---|
| org.apache.logging.log4j:log4jmaven | <2.3.2 | 2.3.2 |
|---|
| org.apache.logging.log4j:log4j-coremaven | >=2.13.0,<2.13.2 | 2.13.2 |
|---|
| org.apache.logging.log4j:log4j-coremaven | >=2.4.0,<2.12.3 | 2.12.3 |
|---|
| org.apache.logging.log4j:log4j-coremaven | <2.3.2 | 2.3.2 |
|---|
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard| org.apache.logging.log4j:log4jmaven |
|---|
| >=2.13.0,<2.13.2 |
| 2.13.2 |
| org.apache.logging.log4j:log4jmaven | >=2.4.0,<2.12.3 | 2.12.3 |
|---|
| org.apache.logging.log4j:log4jmaven | <2.3.2 | 2.3.2 |
|---|
| org.apache.logging.log4j:log4j-coremaven | >=2.13.0,<2.13.2 | 2.13.2 |
|---|
| org.apache.logging.log4j:log4j-coremaven | >=2.4.0,<2.12.3 | 2.12.3 |
|---|
| org.apache.logging.log4j:log4j-coremaven | <2.3.2 | 2.3.2 |
|---|
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard