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ch.qos.logback:logback-core

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

Open advisories

10 actionable advisories, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Low, CVSS 2.9MavenPublished

    Logback vulnerable to Object Injection through HardenedObjectInputStream modules

    CVE-2026-10532 · GHSA-jhq6-gfmj-v8fx

    Affected
    • Maven ch.qos.logback:logback-core < 1.5.34
    Fixed in
    1.5.34· Vendor fix available
    Issue
    Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules) allows Object Injection, albeit heavily restricted. More precisely, an attacker able to influence serialized data sent to SimpleSocketServer or SimpleSSLSocketServer can instantiate Proxy objects. Although deserialization is heavily restricted by HardenedObjectInputStream and no practical way to achieve remote code execution or significant privilege escalation has been identified, this issue constitutes a bypass of the intended security restrictions. This issue affects logback: through 1.5.33 inclusive.

    Recommended action: Upgrade to 1.5.34 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →
  2. Low, CVSS 1.2MavenPublished

    QOS.CH Sarl logback logback-core has a deserialization of untrusted data vulnerability

    CVE-2026-9828 · GHSA-p47f-322f-whfh

    Affected
    • Maven ch.qos.logback:logback-core <= 1.5.32
    Fixed in
    1.5.33· Vendor fix available
    Issue
    Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules) allows Object Injection albeit heavily restricted. More precisely, an attacker able to influence serialized data sent to SimpleSocketServer or SimpleSSLSocketServer can instantiate objects from classes in the java.lang and java.util packages that are not explicitly blocked. Although deserialization is heavily restricted by HardenedObjectInputStream and no practical way to achieve remote code execution or significant privilege escalation has been identified, this issue constitutes a bypass of the intended security restrictions. This issue affects logback: through 1.5.32 inclusive.

    Recommended action: Upgrade to 1.5.33 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →
  3. Low, CVSS 1.8MavenPublished

    Logback allows an attacker to instantiate classes already present on the class path

    CVE-2026-1225 · GHSA-qqpg-mvqg-649v

    Affected
    • Maven ch.qos.logback:logback-core < 1.5.25
    Fixed in
    1.5.25· Vendor fix available
    Issue
    ACE vulnerability in configuration file processing by QOS.CH logback-core up to and including version 1.5.24 in Java applications, allows an attacker to instantiate classes already present on the class path by compromising an existing logback configuration file. The instantiation of a potentially malicious Java class requires that said class is present on the user's class-path. In addition, the attacker must have write access to a configuration file. However, after successful instantiation, the instance is very likely to be discarded with no further ado.

    Recommended action: Upgrade to 1.5.25 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →
  4. Medium, CVSS 5.9MavenPublished

    QOS.CH logback-core is vulnerable to Arbitrary Code Execution through file processing

    CVE-2025-11226 · GHSA-25qh-j22f-pwp8

    Affected
    • Maven ch.qos.logback:logback-core >= 1.4.0, < 1.5.19; < 1.3.16
    Fixed in
    1.5.191.3.16· Vendor fix available
    Issue
    QOS.CH logback-core versions up to 1.5.18 contain an ACE vulnerability in conditional configuration file processing in Java applications. This vulnerability allows an attacker to execute arbitrary code by compromising an existing logback configuration file or by injecting a malicious environment variable before program execution. A successful attack requires the Janino library and Spring Framework to be present on the user's class path. Additionally, the attacker must have write access to a configuration file. Alternatively, the attacker could inject a malicious environment variable pointing to a malicious configuration file. In both cases, the attack requires existing privileges.

    Recommended action: Upgrade to 1.5.19 or 1.3.16 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →
  5. Medium, CVSS 5.9MavenPublished

    QOS.CH logback-core Expression Language Injection vulnerability

    CVE-2024-12798 · GHSA-pr98-23f8-jwxv

    Affected
    • Maven ch.qos.logback:logback-core >= 1.4.0, < 1.5.13; < 1.3.15
    Fixed in
    1.5.131.3.15· Vendor fix available
    Issue
    ACE vulnerability in JaninoEventEvaluator by QOS.CH logback-core up to and including version 1.5.12 in Java applications allows attackers to execute arbitrary code by compromising an existing logback configuration file or by injecting an environment variable before program execution. Malicious logback configuration files can allow the attacker to execute arbitrary code using the JaninoEventEvaluator extension. A successful attack requires the user to have write access to a configuration file. Alternatively, the attacker could inject a malicious environment variable pointing to a malicious configuration file. In both cases, the attack requires existing privilege.

    Recommended action: Upgrade to 1.5.13 or 1.3.15 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →
  6. Low, CVSS 2.4MavenPublished

    QOS.CH logback-core Server-Side Request Forgery vulnerability

    CVE-2024-12801 · GHSA-6v67-2wr5-gvf4

    Affected
    • Maven ch.qos.logback:logback-core >= 1.4.0, < 1.5.13; < 1.3.15
    Fixed in
    1.5.131.3.15· Vendor fix available
    Issue
    Server-Side Request Forgery (SSRF) in SaxEventRecorder by QOS.CH logback version 1.5.12 on the Java platform, allows an attacker to forge requests by compromising logback configuration files in XML. The attacks involves the modification of DOCTYPE declaration in XML configuration files.

    Recommended action: Upgrade to 1.5.13 or 1.3.15 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →
  7. High, CVSS 7.1MavenPublished

    Logback is vulnerable to an attacker mounting a Denial-Of-Service attack by sending poisoned data

    CVE-2023-6481 · GHSA-gm62-rw4g-vrc4

    Affected
    • Maven ch.qos.logback:logback-core >= 1.4.13, <= 1.4.13; >= 1.3.13, <= 1.3.13; >= 1.2.12, <= 1.2.12
    Fixed in
    1.2.131.4.141.3.14· Vendor fix available
    Issue
    A serialization vulnerability in logback receiver component part of logback version 1.4.13, 1.3.13 and 1.2.12 allows an attacker to mount a Denial-Of-Service attack by sending poisoned data.

    Recommended action: Upgrade to 1.4.14, 1.3.14 or 1.2.13 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →
  8. High, CVSS 7.1MavenPublished

    logback serialization vulnerability

    CVE-2023-6378 · GHSA-vmq6-5m68-f53m

    Affected
    • Maven ch.qos.logback:logback-core >= 1.4.0, < 1.4.12; >= 1.3.0, < 1.3.12; < 1.2.13
    Fixed in
    1.2.131.4.121.3.12· Vendor fix available
    Issue
    A serialization vulnerability in logback receiver component part of logback allows an attacker to mount a Denial-Of-Service attack by sending poisoned data. This is only exploitable if logback receiver component is deployed. See https://logback.qos.ch/manual/receivers.html

    Recommended action: Upgrade to 1.4.12, 1.3.12 or 1.2.13 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →
  9. Medium, CVSS 6.6MavenPublished

    Deserialization of Untrusted Data in logback

    CVE-2021-42550 · GHSA-668q-qrv7-99fm

    Affected
    • Maven ch.qos.logback:logback-core < 1.2.9
    Fixed in
    1.2.9· Vendor fix available
    Issue
    In logback version 1.2.7 and prior versions, an attacker with the required privileges to edit configurations files could craft a malicious configuration allowing to execute arbitrary code loaded from LDAP servers.

    Recommended action: Upgrade to 1.2.9 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →
  10. Critical, CVSS 9.8MavenPublished

    QOS.ch Logback vulnerable to Deserialization of Untrusted Data

    CVE-2017-5929 · GHSA-vmfg-rjjm-rjrj

    Affected
    • Maven ch.qos.logback:logback-core < 1.2.0
    Fixed in
    1.2.0· Vendor fix available
    Issue
    QOS.ch Logback before 1.2.0 has a serialization vulnerability affecting the SocketServer and ServerSocketReceiver components. The RemoteStreamAppenderClient class in logback-classic and the SocketNode classes in logback-classic and logback-access allow data to be deserialized over a Java Socket, via an ObjectInputStream, without validating the data beforehand. When data is received from the Socket, to be logged, it is deserialized into Java objects.An attacker can exploit this vulnerability by sending malicious, serialized Java objects over the connection to the Socket, which may result in execution of arbitrary code when those objects are deserialized. Note that although logback-core is implicated by the Logback project here, the Sonatype Security Research team discovered that the vulnerability is actually present in the logback-classic and logback-access components. Versions prior to 1.2.0 are vulnerable, as stated in the advisory.

    Recommended action: Upgrade to 1.2.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →