synced 6 MIN AGO
01 Record

CVE-2020-13956

Apache HttpClient versions prior to version 4.5.13 and 5.0.3 can misinterpret malformed authority component in request URIs passed to the library as java.net.URI object and pick the wrong target host

MediumPUBLISHEDCNA: apache
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
View raw JSON

02 Description

Apache HttpClient versions prior to version 4.5.13 and 5.0.3 can misinterpret malformed authority component in request URIs passed to the library as java.net.URI object and pick the wrong target host

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
9.03% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 94.8% of scored records. A rank, not a probability.
NVD base score
5.3 (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:N/I:L/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-10-08.
Red Hat severity
Moderate. 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.

04 Metadata

Published
2020-12-02 16:20Z5 YR AGO
Last updated
2026-10-08 18:44Z20 DAYS AGO
Reserved
2020-06-08
Assigning CNA
apache
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weaknesses
  • CWE-20Improper Input ValidationClass
Data version
5.2
Document digest
4e7d2d26e6ecbd70df536ebbac02c3679e261a64c413a3a117884e3e0d3b3ea1

05 Affected products

VendorProductVersionsPlatforms
n/aApache HttpClient4.5.12 and prior, 5.0.2 and prior—

06 References

07 Fixed in

AlmaLinux 8

  • aopalliance
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.0-17.module_el8.6.0+2752+f1f3449e
    • Affected before 1.0-20.module_el8.6.0+2786+d7c38b21
  • apache-commons-cli
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.4-4.module_el8.6.0+2752+f1f3449e
    • Affected before 1.4-7.module_el8.6.0+2786+d7c38b21
  • apache-commons-codec
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.11-3.module_el8.6.0+2752+f1f3449e
    • Affected before 1.13-3.module_el8.6.0+2786+d7c38b21
  • apache-commons-io
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:2.6-3.module_el8.6.0+2752+f1f3449e
    • Affected before 1:2.6-6.module_el8.6.0+2786+d7c38b21
  • apache-commons-lang3
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.7-3.module_el8.6.0+2752+f1f3449e
    • Affected before 3.9-4.module_el8.6.0+2786+d7c38b21
  • apache-commons-logging
    Fixed in 1.2-13.module_el8.6.0+2752+f1f3449e
  • atinject
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1-28.20100611svn86.module_el8.6.0+2752+f1f3449e
    • Affected before 1-31.20100611svn86.module_el8.6.0+2786+d7c38b21
  • cdi-api
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.2-8.module_el8.6.0+2752+f1f3449e
    • Affected before 2.0.1-3.module_el8.6.0+2786+d7c38b21
  • geronimo-annotation
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.0-23.module_el8.6.0+2752+f1f3449e
    • Affected before 1.0-26.module_el8.6.0+2786+d7c38b21
  • glassfish-el-api
    Fixed in 3.0.1-0.7.b08.module_el8.6.0+2752+f1f3449e
  • google-guice
    Fixed

    A version is affected if any line below covers it.

    • Affected before 4.1-11.module_el8.6.0+2752+f1f3449e
    • Affected before 4.2.2-4.module_el8.6.0+2786+d7c38b21
  • guava
    Fixed in 28.1-3.module_el8.6.0+2786+d7c38b21
  • guava20
    Fixed in 20.0-8.module_el8.6.0+2752+f1f3449e
  • hawtjni-runtime
    Fixed in 1.16-2.module_el8.6.0+2752+f1f3449e
  • httpcomponents-client
    Fixed

    A version is affected if any line below covers it.

    • Affected before 4.5.10-4.module_el8.6.0+2786+d7c38b21
    • Affected before 4.5.5-5.module_el8.6.0+2752+f1f3449e
  • httpcomponents-core
    Fixed

    A version is affected if any line below covers it.

    • Affected before 4.4.10-3.module_el8.6.0+2752+f1f3449e
    • Affected before 4.4.12-3.module_el8.6.0+2786+d7c38b21
  • jansi
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.17.1-1.module_el8.0.0+6044+f3cbc35d
    • Affected before 1.17.1-1.module_el8.4.0+2250+516cbbff
    • Affected before 1.17.1-1.module_el8.6.0+2752+f1f3449e
    • Affected before 1.18-4.module_el8.6.0+2786+d7c38b21
  • jansi-native
    Fixed in 1.7-7.module_el8.6.0+2752+f1f3449e
  • jboss-interceptors-1.2-api
    Fixed in 1.0.0-8.module_el8.6.0+2752+f1f3449e
  • jcl-over-slf4j
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.7.25-4.module_el8.6.0+2752+f1f3449e
    • Affected before 1.7.28-3.module_el8.6.0+2786+d7c38b21
  • jsoup
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.11.3-3.module_el8.6.0+2752+f1f3449e
    • Affected before 1.12.1-3.module_el8.6.0+2786+d7c38b21
  • jsr-305
    Fixed in 0-0.25.20130910svn.module_el8.6.0+2786+d7c38b21
  • maven
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:3.5.4-5.module_el8.6.0+2752+f1f3449e
    • Affected before 1:3.6.2-7.module_el8.6.0+2786+d7c38b21
  • maven-lib
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:3.5.4-5.module_el8.6.0+2752+f1f3449e
    • Affected before 1:3.6.2-7.module_el8.6.0+2786+d7c38b21
  • maven-openjdk11
    Fixed in 1:3.6.2-7.module_el8.6.0+2786+d7c38b21
  • maven-openjdk17
    Fixed in 1:3.6.2-7.module_el8.6.0+2786+d7c38b21
  • maven-openjdk8
    Fixed in 1:3.6.2-7.module_el8.6.0+2786+d7c38b21
  • maven-resolver
    Fixed in 1.4.1-3.module_el8.6.0+2786+d7c38b21
  • maven-resolver-api
    Fixed in 1:1.1.1-2.module_el8.6.0+2752+f1f3449e
  • maven-resolver-connector-basic
    Fixed in 1:1.1.1-2.module_el8.6.0+2752+f1f3449e
  • maven-resolver-impl
    Fixed in 1:1.1.1-2.module_el8.6.0+2752+f1f3449e
  • maven-resolver-spi
    Fixed in 1:1.1.1-2.module_el8.6.0+2752+f1f3449e
  • maven-resolver-transport-wagon
    Fixed in 1:1.1.1-2.module_el8.6.0+2752+f1f3449e
  • maven-resolver-util
    Fixed in 1:1.1.1-2.module_el8.6.0+2752+f1f3449e
  • maven-shared-utils
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.2.1-0.1.module_el8.6.0+2752+f1f3449e
    • Affected before 3.2.1-0.4.module_el8.6.0+2786+d7c38b21
  • maven-wagon
    Fixed in 3.3.4-2.module_el8.6.0+2786+d7c38b21
  • maven-wagon-file
    Fixed in 3.1.0-1.module_el8.6.0+2752+f1f3449e
  • maven-wagon-http
    Fixed in 3.1.0-1.module_el8.6.0+2752+f1f3449e
  • maven-wagon-http-shared
    Fixed in 3.1.0-1.module_el8.6.0+2752+f1f3449e
  • maven-wagon-provider-api
    Fixed in 3.1.0-1.module_el8.6.0+2752+f1f3449e

10 further packages in AlmaLinux 8 not shown (first 40 listed).

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Arch Linux

  • maven
    Fixed in 3.8.1-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

CloudLinux 8

  • aopalliance
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.0-17.module_el8.6.0+2752+f1f3449e
    • Affected before 1.0-20.module_el8.6.0+2786+d7c38b21
  • apache-commons-cli
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.4-4.module_el8.6.0+2752+f1f3449e
    • Affected before 1.4-7.module_el8.6.0+2786+d7c38b21
  • apache-commons-codec
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.11-3.module_el8.6.0+2752+f1f3449e
    • Affected before 1.13-3.module_el8.6.0+2786+d7c38b21
  • apache-commons-io
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:2.6-3.module_el8.6.0+2752+f1f3449e
    • Affected before 1:2.6-6.module_el8.6.0+2786+d7c38b21
  • apache-commons-lang3
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.7-3.module_el8.6.0+2752+f1f3449e
    • Affected before 3.9-4.module_el8.6.0+2786+d7c38b21
  • apache-commons-logging
    Fixed in 1.2-13.module_el8.6.0+2752+f1f3449e
  • atinject
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1-28.20100611svn86.module_el8.6.0+2752+f1f3449e
    • Affected before 1-31.20100611svn86.module_el8.6.0+2786+d7c38b21
  • cdi-api
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.2-8.module_el8.6.0+2752+f1f3449e
    • Affected before 2.0.1-3.module_el8.6.0+2786+d7c38b21
  • geronimo-annotation
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.0-23.module_el8.6.0+2752+f1f3449e
    • Affected before 1.0-26.module_el8.6.0+2786+d7c38b21
  • glassfish-el-api
    Fixed in 3.0.1-0.7.b08.module_el8.6.0+2752+f1f3449e
  • google-guice
    Fixed

    A version is affected if any line below covers it.

    • Affected before 4.1-11.module_el8.6.0+2752+f1f3449e
    • Affected before 4.2.2-4.module_el8.6.0+2786+d7c38b21
  • guava
    Fixed in 28.1-3.module_el8.6.0+2786+d7c38b21
  • guava20
    Fixed in 20.0-8.module_el8.6.0+2752+f1f3449e
  • hawtjni-runtime
    Fixed in 1.16-2.module_el8.6.0+2752+f1f3449e
  • httpcomponents-client
    Fixed

    A version is affected if any line below covers it.

    • Affected before 4.5.10-4.module_el8.6.0+2786+d7c38b21
    • Affected before 4.5.5-5.module_el8.6.0+2752+f1f3449e
  • httpcomponents-core
    Fixed

    A version is affected if any line below covers it.

    • Affected before 4.4.10-3.module_el8.6.0+2752+f1f3449e
    • Affected before 4.4.12-3.module_el8.6.0+2786+d7c38b21
  • jansi
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.17.1-1.module_el8.0.0+6044+f3cbc35d
    • Affected before 1.17.1-1.module_el8.4.0+2250+516cbbff
    • Affected before 1.17.1-1.module_el8.6.0+2752+f1f3449e
    • Affected before 1.18-4.module_el8.6.0+2786+d7c38b21
  • jansi-native
    Fixed in 1.7-7.module_el8.6.0+2752+f1f3449e
  • jboss-interceptors-1.2-api
    Fixed in 1.0.0-8.module_el8.6.0+2752+f1f3449e
  • jcl-over-slf4j
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.7.25-4.module_el8.6.0+2752+f1f3449e
    • Affected before 1.7.28-3.module_el8.6.0+2786+d7c38b21
  • jsoup
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1.11.3-3.module_el8.6.0+2752+f1f3449e
    • Affected before 1.12.1-3.module_el8.6.0+2786+d7c38b21
  • jsr-305
    Fixed in 0-0.25.20130910svn.module_el8.6.0+2786+d7c38b21
  • maven
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:3.5.4-5.module_el8.6.0+2752+f1f3449e
    • Affected before 1:3.6.2-7.module_el8.6.0+2786+d7c38b21
  • maven-lib
    Fixed

    A version is affected if any line below covers it.

    • Affected before 1:3.5.4-5.module_el8.6.0+2752+f1f3449e
    • Affected before 1:3.6.2-7.module_el8.6.0+2786+d7c38b21
  • maven-openjdk11
    Fixed in 1:3.6.2-7.module_el8.6.0+2786+d7c38b21
  • maven-openjdk17
    Fixed in 1:3.6.2-7.module_el8.6.0+2786+d7c38b21
  • maven-openjdk8
    Fixed in 1:3.6.2-7.module_el8.6.0+2786+d7c38b21
  • maven-resolver
    Fixed in 1.4.1-3.module_el8.6.0+2786+d7c38b21
  • maven-resolver-api
    Fixed in 1:1.1.1-2.module_el8.6.0+2752+f1f3449e
  • maven-resolver-connector-basic
    Fixed in 1:1.1.1-2.module_el8.6.0+2752+f1f3449e
  • maven-resolver-impl
    Fixed in 1:1.1.1-2.module_el8.6.0+2752+f1f3449e
  • maven-resolver-spi
    Fixed in 1:1.1.1-2.module_el8.6.0+2752+f1f3449e
  • maven-resolver-transport-wagon
    Fixed in 1:1.1.1-2.module_el8.6.0+2752+f1f3449e
  • maven-resolver-util
    Fixed in 1:1.1.1-2.module_el8.6.0+2752+f1f3449e
  • maven-shared-utils
    Fixed

    A version is affected if any line below covers it.

    • Affected before 3.2.1-0.1.module_el8.6.0+2752+f1f3449e
    • Affected before 3.2.1-0.4.module_el8.6.0+2786+d7c38b21
  • maven-wagon
    Fixed in 3.3.4-2.module_el8.6.0+2786+d7c38b21
  • maven-wagon-file
    Fixed in 3.1.0-1.module_el8.6.0+2752+f1f3449e
  • maven-wagon-http
    Fixed in 3.1.0-1.module_el8.6.0+2752+f1f3449e
  • maven-wagon-http-shared
    Fixed in 3.1.0-1.module_el8.6.0+2752+f1f3449e
  • maven-wagon-provider-api
    Fixed in 3.1.0-1.module_el8.6.0+2752+f1f3449e

10 further packages in CloudLinux 8 not shown (first 40 listed).

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • httpcomponents-client
    Fixed in 4.5.13-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • httpcomponents-client
    Fixed in 4.5.13-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • httpcomponents-client
    Fixed in 4.5.13-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • httpcomponents-client
    Fixed in 4.3.3-1ubuntu0.1+esm2
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • httpcomponents-client
    Fixed in 4.5.1-1ubuntu0.1~esm1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • httpcomponents-client
    Fixed in 4.5.5-1ubuntu0.1~esm1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • httpcomponents-client
    Fixed in 4.5.11-1ubuntu0.1~esm1
    Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.