CVE-2020-13956 (GCVE-0-2020-13956)
Vulnerability from cvelistv5 – Published: 2020-12-02 16:20 – Updated: 2026-10-08 18:44
VLAI
EPSS
VEX
Summary
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 for request execution.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 18:42 UTC
CWE
- Improper Input Validation
- CWE-20 - Improper Input Validation
Assigner
References
64 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| n/a | Apache HttpClient |
Affected:
4.5.12 and prior, 5.0.2 and prior
|
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"name": "[hive-gitbox] 20210302 [GitHub] [hive] hsnusonic closed pull request #2032: HIVE-24837 Upgrade httpclient to 4.5.13+ due to CVE-2020-13956",
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"name": "[maven-issues] 20210530 [jira] [Updated] (DOXIA-615) Can you provide an updated version in order to fix CVE-2020-13956",
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"name": "[drill-issues] 20210604 [jira] [Commented] (DRILL-7946) Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"name": "[drill-dev] 20210604 [GitHub] [drill] luocooong opened a new pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"name": "[drill-dev] 20210604 [GitHub] [drill] cgivre commented on pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"name": "[drill-dev] 20210604 [GitHub] [drill] laurentgo merged pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"name": "[drill-issues] 20210604 [jira] [Resolved] (DRILL-7946) Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"name": "[drill-commits] 20210604 [drill] branch master updated: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956 (#2250)",
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"name": "[drill-dev] 20210604 [GitHub] [drill] luocooong commented on pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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{
"name": "[creadur-commits] 20210608 [jira] [Work started] (TENTACLES-13) Upgrade httpclient to circumvent CVE-2020-13956",
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"name": "[creadur-dev] 20210621 [jira] [Updated] (RAT-275) Update httpclient to fix CVE-2020-13956 once a new doxia-core release is available",
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"name": "[bookkeeper-issues] 20210914 [GitHub] [bookkeeper] nicoloboschi opened a new pull request #2793: Upgrade httpclient from 4.5.5 to 4.5.13 to address CVE-2020-13956",
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"name": "[lucene-issues] 20210921 [GitHub] [lucene-solr] ventry1990 opened a new pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
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"name": "[lucene-issues] 20210921 [GitHub] [lucene-solr] madrob commented on pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
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"name": "[pulsar-commits] 20201215 [GitHub] [pulsar] yanshuchong opened a new issue #8967: CVSS issue list",
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"name": "[hive-gitbox] 20210301 [GitHub] [hive] hsnusonic opened a new pull request #2032: HIVE-24837 Upgrade httpclient to 4.5.13+ due to CVE-2020-13956",
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"name": "[maven-issues] 20210530 [jira] [Updated] (DOXIA-615) Can you provide an updated version in order to fix CVE-2020-13956",
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{
"name": "[drill-issues] 20210604 [jira] [Commented] (DRILL-7946) Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/r06cf3ca5c8ceb94b39cd24a73d4e96153b485a7dac88444dd876accb@%3Cissues.drill.apache.org%3E"
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"name": "[drill-dev] 20210604 [GitHub] [drill] luocooong opened a new pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/rb4ba262d6f08ab9cf8b1ebbcd9b00b0368ffe90dad7ad7918b4b56fc@%3Cdev.drill.apache.org%3E"
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"url": "https://lists.apache.org/thread.html/r55b2a1d1e9b1ec9db792b93da8f0f99a4fd5a5310b02673359d9b4d1@%3Cdev.drill.apache.org%3E"
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"name": "[drill-issues] 20210604 [jira] [Created] (DRILL-7946) Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/rea3dbf633dde5008d38bf6600a3738b9216e733e03f9ff7becf79625@%3Cissues.drill.apache.org%3E"
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"name": "[drill-dev] 20210604 [GitHub] [drill] cgivre commented on pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"name": "[drill-dev] 20210604 [GitHub] [drill] laurentgo merged pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"value": "Apache HttpClient versiones anteriores a 4.5.13 y 5.0.3, pueden interpretar inapropiadamente el componente authority malformado en las peticiones URI pasadas ??a la biblioteca como objeto java.net.URI y elegir el host de destino equivocado para una ejecuci\u00f3n de la petici\u00f3n"
}
],
"id": "CVE-2020-13956",
"lastModified": "2026-10-08T19:16:54.573",
"metrics": {
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{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
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}
],
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{
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"confidentialityImpact": "NONE",
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"scope": "UNCHANGED",
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"scope": "UNCHANGED",
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"id": "CVE-2020-13956",
"options": [
{
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},
{
"automatable": "yes"
},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-08T18:42:53.307905Z",
"version": "2.0.3"
}
}
]
},
"published": "2020-12-02T17:15:14.547",
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{
"name": "[ranger-dev] 20201215 [jira] [Updated] (RANGER-3100) Upgrade httpclient version from 4.5.6 to 4.5.13+ due to CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/r63296c45d5d84447babaf39bd1487329d8a80d8d563e67a4b6f3d8a7%40%3Cdev.ranger.apache.org%3E"
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{
"name": "[ranger-dev] 20201215 [jira] [Commented] (RANGER-3100) Upgrade httpclient version from 4.5.6 to 4.5.13+ due to CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/r12cb62751b35bdcda0ae2a08b67877d665a1f4d41eee0fa7367169e0%40%3Cdev.ranger.apache.org%3E"
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{
"name": "[pulsar-commits] 20201215 [GitHub] [pulsar] yanshuchong opened a new issue #8967: CVSS issue list",
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"url": "https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E"
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{
"name": "[ranger-dev] 20201216 [jira] [Commented] (RANGER-3100) Upgrade httpclient version from 4.5.6 to 4.5.13+ due to CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/r34178ab6ef106bc940665fd3f4ba5026fac3603b3fa2aefafa0b619d%40%3Cdev.ranger.apache.org%3E"
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{
"name": "[lucene-solr-user] 20201229 Upgrade httpclient version due to CVE-2020-13956?",
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"url": "https://lists.apache.org/thread.html/rb725052404fabffbe093c83b2c46f3f87e12c3193a82379afbc529f8%40%3Csolr-user.lucene.apache.org%3E"
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{
"name": "[turbine-commits] 20210203 svn commit: r1886168 - in /turbine/core/trunk: ./ conf/ conf/test/ src/java/org/apache/turbine/services/urlmapper/ src/test/org/apache/turbine/services/urlmapper/ src/test/org/apache/turbine/services/urlmapper/model/ xdocs/howto/",
"tags": [
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"url": "https://lists.apache.org/thread.html/rb33212dab7beccaf1ffef9b88610047c644f644c7a0ebdc44d77e381%40%3Ccommits.turbine.apache.org%3E"
},
{
"name": "[hive-issues] 20210301 [jira] [Updated] (HIVE-24837) Upgrade httpclient to 4.5.13+ due to CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/rfc00884c7b7ca878297bffe45fcb742c362b00b26ba37070706d44c3%40%3Cissues.hive.apache.org%3E"
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{
"name": "[hive-issues] 20210301 [jira] [Assigned] (HIVE-24837) Upgrade httpclient to 4.5.13+ due to CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/r5fec9c1d67f928179adf484b01e7becd7c0a6fdfe3a08f92ea743b90%40%3Cissues.hive.apache.org%3E"
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{
"name": "[hive-gitbox] 20210301 [GitHub] [hive] hsnusonic opened a new pull request #2032: HIVE-24837 Upgrade httpclient to 4.5.13+ due to CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/r2dc7930b43eadc78220d269b79e13ecd387e4bee52db67b2f47d4303%40%3Cgitbox.hive.apache.org%3E"
},
{
"name": "[hive-dev] 20210301 [jira] [Created] (HIVE-24837) Upgrade httpclient to 4.5.13+ due to CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/r043a75acdeb52b15dd5e9524cdadef4202e6a5228644206acf9363f9%40%3Cdev.hive.apache.org%3E"
},
{
"name": "[hive-issues] 20210301 [jira] [Work logged] (HIVE-24837) Upgrade httpclient to 4.5.13+ due to CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/rd5ab56beb2ac6879f6ab427bc4e5f7691aed8362d17b713f61779858%40%3Cissues.hive.apache.org%3E"
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{
"name": "[hive-gitbox] 20210302 [GitHub] [hive] hsnusonic closed pull request #2032: HIVE-24837 Upgrade httpclient to 4.5.13+ due to CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/rcd9ad5dda60c82ab0d0c9bd3e9cb1dc740804451fc20c7f451ef5cc4%40%3Cgitbox.hive.apache.org%3E"
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{
"name": "[solr-issues] 20210316 [jira] [Resolved] (SOLR-15270) upgrade httpclient to address CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/re504acd4d63b8df2a7353658f45c9a3137e5f80e41cf7de50058b2c1%40%3Cissues.solr.apache.org%3E"
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{
"name": "[solr-issues] 20210316 [jira] [Created] (SOLR-15269) upgrade httpclient to address CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/r5de3d3808e7b5028df966e45115e006456c4e8931dc1e29036f17927%40%3Cissues.solr.apache.org%3E"
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{
"name": "[solr-issues] 20210316 [jira] [Created] (SOLR-15270) upgrade httpclient to address CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/rae14ae25ff4a60251e3ba2629c082c5ba3851dfd4d21218b99b56652%40%3Cissues.solr.apache.org%3E"
},
{
"name": "[maven-issues] 20210530 [jira] [Updated] (DOXIA-615) Can you provide an updated version in order to fix CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/r03bbc318c81be21f5c8a9b85e34f2ecc741aa804a8e43b0ef2c37749%40%3Cissues.maven.apache.org%3E"
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{
"name": "[maven-issues] 20210530 [jira] [Resolved] (DOXIA-615) Can you provide an updated version in order to fix CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/ra539f20ef0fb0c27ee39945b5f56bf162e5c13d1c60f7344dab8de3b%40%3Cissues.maven.apache.org%3E"
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{
"name": "[maven-issues] 20210530 [jira] [Closed] (DOXIA-615) Can you provide an updated version in order to fix CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/r8aa1e5c343b89aec5b69961471950e862f15246cb6392910161c389b%40%3Cissues.maven.apache.org%3E"
},
{
"name": "[drill-issues] 20210604 [jira] [Commented] (DRILL-7946) Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/r06cf3ca5c8ceb94b39cd24a73d4e96153b485a7dac88444dd876accb%40%3Cissues.drill.apache.org%3E"
},
{
"name": "[drill-dev] 20210604 [GitHub] [drill] luocooong opened a new pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/rb4ba262d6f08ab9cf8b1ebbcd9b00b0368ffe90dad7ad7918b4b56fc%40%3Cdev.drill.apache.org%3E"
},
{
"name": "[drill-dev] 20210604 [jira] [Created] (DRILL-7946) Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
"tags": [
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],
"url": "https://lists.apache.org/thread.html/r55b2a1d1e9b1ec9db792b93da8f0f99a4fd5a5310b02673359d9b4d1%40%3Cdev.drill.apache.org%3E"
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{
"name": "[drill-issues] 20210604 [jira] [Created] (DRILL-7946) Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/rea3dbf633dde5008d38bf6600a3738b9216e733e03f9ff7becf79625%40%3Cissues.drill.apache.org%3E"
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{
"name": "[drill-dev] 20210604 [GitHub] [drill] cgivre commented on pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/rc3739e0ad4bcf1888c6925233bfc37dd71156bbc8416604833095c42%40%3Cdev.drill.apache.org%3E"
},
{
"name": "[drill-dev] 20210604 [GitHub] [drill] laurentgo merged pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
"tags": [
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},
{
"name": "[drill-issues] 20210604 [jira] [Resolved] (DRILL-7946) Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/rad6222134183046f3928f733bf680919e0c390739bfbfe6c90049673%40%3Cissues.drill.apache.org%3E"
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{
"name": "[drill-dev] 20210604 [jira] [Resolved] (DRILL-7946) Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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{
"name": "[drill-commits] 20210604 [drill] branch master updated: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956 (#2250)",
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{
"name": "[drill-dev] 20210604 [GitHub] [drill] luocooong commented on pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/reef569c2419705754a3acf42b5f19b2a158153cef0e448158bc54917%40%3Cdev.drill.apache.org%3E"
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{
"name": "[creadur-commits] 20210608 [jira] [Work started] (TENTACLES-13) Upgrade httpclient to circumvent CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/r3f740e4c38bba1face49078aa5cbeeb558c27be601cc9712ad2dcd1e%40%3Ccommits.creadur.apache.org%3E"
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{
"name": "[creadur-commits] 20210608 [jira] [Resolved] (TENTACLES-13) Upgrade httpclient to circumvent CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/rfb35f6db9ba1f1e061b63769a4eff5abadcc254ebfefc280e5a0dcf1%40%3Ccommits.creadur.apache.org%3E"
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{
"name": "[creadur-commits] 20210608 [jira] [Commented] (TENTACLES-13) Upgrade httpclient to circumvent CVE-2020-13956",
"tags": [
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],
"url": "https://lists.apache.org/thread.html/r2a03dc210231d7e852ef73015f71792ac0fcaca6cccc024c522ef17d%40%3Ccommits.creadur.apache.org%3E"
},
{
"name": "[creadur-commits] 20210608 [jira] [Created] (TENTACLES-13) Upgrade httpclient to circumvent CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/r34efec51cb817397ccf9f86e25a75676d435ba5f83ee7b2eabdad707%40%3Ccommits.creadur.apache.org%3E"
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{
"name": "[creadur-commits] 20210608 [jira] [Assigned] (TENTACLES-13) Upgrade httpclient to circumvent CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/r70c429923100c5a4fae8e5bc71c8a2d39af3de4888f50a0ac3755e6f%40%3Ccommits.creadur.apache.org%3E"
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{
"tags": [
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"url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
},
{
"name": "[maven-issues] 20210621 [jira] [Assigned] (DOXIA-615) Can you provide an updated version in order to fix CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/rc990e2462ec32b09523deafb2c73606208599e196fa2d7f50bdbc587%40%3Cissues.maven.apache.org%3E"
},
{
"name": "[creadur-dev] 20210621 [jira] [Updated] (RAT-275) Update httpclient to fix CVE-2020-13956 once a new doxia-core release is available",
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"url": "https://lists.apache.org/thread.html/r132e4c6a560cfc519caa1aaee63bdd4036327610eadbd89f76dd5457%40%3Cdev.creadur.apache.org%3E"
},
{
"name": "[solr-issues] 20210623 [jira] [Updated] (SOLR-15270) upgrade httpclient to address CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/r6a3cda38d050ebe13c1bc9a28d0a8ec38945095d07eca49046bcb89f%40%3Cissues.solr.apache.org%3E"
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{
"name": "[solr-issues] 20210623 [jira] [Updated] (SOLR-15269) upgrade httpclient to address CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/rc505fee574fe8d18f9b0c655a4d120b0ae21bb6a73b96003e1d9be35%40%3Cissues.solr.apache.org%3E"
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{
"name": "[jackrabbit-dev] 20210706 [GitHub] [jackrabbit-oak] reschke commented on pull request #310: OAK-9482: upgrade httpclient to 4.5.13",
"tags": [
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"url": "https://lists.apache.org/thread.html/r5b55f65c123a7481104d663a915ec45a0d103e6aaa03f42ed1c07a89%40%3Cdev.jackrabbit.apache.org%3E"
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{
"name": "[jackrabbit-dev] 20210706 [GitHub] [jackrabbit-oak] reschke removed a comment on pull request #310: OAK-9482: upgrade httpclient to 4.5.13",
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"url": "https://lists.apache.org/thread.html/rc0863892ccfd9fd0d0ae10091f24ee769fb39b8957fe4ebabfc11f17%40%3Cdev.jackrabbit.apache.org%3E"
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{
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"url": "https://www.oracle.com//security-alerts/cpujul2021.html"
},
{
"name": "[solr-issues] 20210912 [jira] [Updated] (SOLR-15269) upgrade httpclient to address CVE-2020-13956",
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},
{
"name": "[bookkeeper-issues] 20210914 [GitHub] [bookkeeper] nicoloboschi opened a new pull request #2793: Upgrade httpclient from 4.5.5 to 4.5.13 to address CVE-2020-13956",
"tags": [
"mailing-list",
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],
"url": "https://lists.apache.org/thread.html/r87ddc09295c27f25471269ad0a79433a91224045988b88f0413a97ec%40%3Cissues.bookkeeper.apache.org%3E"
},
{
"name": "[bookkeeper-issues] 20210917 [GitHub] [bookkeeper] nicoloboschi commented on pull request #2793: Upgrade httpclient from 4.5.5 to 4.5.13 to address CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/rf03228972e56cb4a03e6d9558188c2938078cf3ceb23a3fead87c9ca%40%3Cissues.bookkeeper.apache.org%3E"
},
{
"name": "[lucene-issues] 20210921 [GitHub] [lucene-solr] ventry1990 opened a new pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/r2835543ef0f91adcc47da72389b816e36936f584c7be584d2314fac3%40%3Cissues.lucene.apache.org%3E"
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{
"name": "[lucene-issues] 20210921 [GitHub] [lucene-solr] madrob commented on pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/rf43d17ed0d1fb4fb79036b582810ef60b18b1ef3add0d5dea825af1e%40%3Cissues.lucene.apache.org%3E"
},
{
"name": "[lucene-issues] 20210921 [GitHub] [lucene-solr] ventry1990 commented on pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
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{
"name": "[lucene-issues] 20211007 [GitHub] [lucene-solr] madrob commented on pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
"tags": [
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{
"name": "[lucene-issues] 20211009 [GitHub] [lucene-solr] ventry1990 closed pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
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{
"name": "[lucene-issues] 20211009 [GitHub] [lucene-solr] ventry1990 commented on pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
"tags": [
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{
"name": "[lucene-issues] 20211009 [GitHub] [lucene-solr] ventry1990 opened a new pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
"tags": [
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"url": "https://lists.apache.org/thread.html/r3cecd59fba74404cbf4eb430135e1080897fb376f111406a78bed13a%40%3Cissues.lucene.apache.org%3E"
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{
"name": "[solr-issues] 20211011 [jira] [Commented] (SOLR-15269) upgrade httpclient to address CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/r0bebe6f9808ac7bdf572873b4fa96a29c6398c90dab29f131f3ebffe%40%3Cissues.solr.apache.org%3E"
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{
"name": "[solr-issues] 20211011 [jira] [Resolved] (SOLR-15269) upgrade httpclient to address CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/r4850b3fbaea02fde2886e461005e4af8d37c80a48b3ce2a6edca0e30%40%3Cissues.solr.apache.org%3E"
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"name": "[maven-issues] 20210530 [jira] [Updated] (DOXIA-615) Can you provide an updated version in order to fix CVE-2020-13956",
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"name": "[drill-issues] 20210604 [jira] [Commented] (DRILL-7946) Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/r06cf3ca5c8ceb94b39cd24a73d4e96153b485a7dac88444dd876accb@%3Cissues.drill.apache.org%3E"
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"name": "[drill-dev] 20210604 [GitHub] [drill] luocooong opened a new pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"url": "https://lists.apache.org/thread.html/r55b2a1d1e9b1ec9db792b93da8f0f99a4fd5a5310b02673359d9b4d1@%3Cdev.drill.apache.org%3E"
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"url": "https://lists.apache.org/thread.html/rea3dbf633dde5008d38bf6600a3738b9216e733e03f9ff7becf79625@%3Cissues.drill.apache.org%3E"
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"name": "[drill-dev] 20210604 [GitHub] [drill] cgivre commented on pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"name": "[drill-dev] 20210604 [GitHub] [drill] laurentgo merged pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
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"name": "[drill-dev] 20210604 [GitHub] [drill] luocooong commented on pull request #2250: DRILL-7946: Bump HttpClient from 4.5.12 to 4.5.13 for CVE-2020-13956",
"refsource": "MLIST",
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"name": "[creadur-commits] 20210608 [jira] [Work started] (TENTACLES-13) Upgrade httpclient to circumvent CVE-2020-13956",
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"name": "[creadur-commits] 20210608 [jira] [Resolved] (TENTACLES-13) Upgrade httpclient to circumvent CVE-2020-13956",
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"refsource": "MLIST",
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"name": "[creadur-commits] 20210608 [jira] [Created] (TENTACLES-13) Upgrade httpclient to circumvent CVE-2020-13956",
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"name": "[maven-issues] 20210621 [jira] [Assigned] (DOXIA-615) Can you provide an updated version in order to fix CVE-2020-13956",
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"name": "[creadur-dev] 20210621 [jira] [Updated] (RAT-275) Update httpclient to fix CVE-2020-13956 once a new doxia-core release is available",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r132e4c6a560cfc519caa1aaee63bdd4036327610eadbd89f76dd5457@%3Cdev.creadur.apache.org%3E"
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"name": "[solr-issues] 20210623 [jira] [Updated] (SOLR-15270) upgrade httpclient to address CVE-2020-13956",
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"name": "[jackrabbit-dev] 20210706 [GitHub] [jackrabbit-oak] reschke commented on pull request #310: OAK-9482: upgrade httpclient to 4.5.13",
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"refsource": "MLIST",
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"name": "[solr-issues] 20210912 [jira] [Updated] (SOLR-15269) upgrade httpclient to address CVE-2020-13956",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/rfbedcb586a1e7dfce87ee03c720e583fc2ceeafa05f35c542cecc624@%3Cissues.solr.apache.org%3E"
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"name": "[bookkeeper-issues] 20210914 [GitHub] [bookkeeper] nicoloboschi opened a new pull request #2793: Upgrade httpclient from 4.5.5 to 4.5.13 to address CVE-2020-13956",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r87ddc09295c27f25471269ad0a79433a91224045988b88f0413a97ec@%3Cissues.bookkeeper.apache.org%3E"
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"name": "[bookkeeper-issues] 20210917 [GitHub] [bookkeeper] nicoloboschi commented on pull request #2793: Upgrade httpclient from 4.5.5 to 4.5.13 to address CVE-2020-13956",
"refsource": "MLIST",
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"name": "[lucene-issues] 20210921 [GitHub] [lucene-solr] ventry1990 opened a new pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
"refsource": "MLIST",
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"name": "[lucene-issues] 20210921 [GitHub] [lucene-solr] madrob commented on pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/rf43d17ed0d1fb4fb79036b582810ef60b18b1ef3add0d5dea825af1e@%3Cissues.lucene.apache.org%3E"
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"name": "[lucene-issues] 20210921 [GitHub] [lucene-solr] ventry1990 commented on pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
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"name": "[lucene-issues] 20211007 [GitHub] [lucene-solr] madrob commented on pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
"refsource": "MLIST",
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"name": "[lucene-issues] 20211009 [GitHub] [lucene-solr] ventry1990 closed pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
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{
"name": "[lucene-issues] 20211009 [GitHub] [lucene-solr] ventry1990 commented on pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/ree942561f4620313c75982a4e5f3b74fe6f7062b073210779648eec2@%3Cissues.lucene.apache.org%3E"
},
{
"name": "[lucene-issues] 20211009 [GitHub] [lucene-solr] ventry1990 opened a new pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r3cecd59fba74404cbf4eb430135e1080897fb376f111406a78bed13a@%3Cissues.lucene.apache.org%3E"
},
{
"name": "[solr-issues] 20211011 [jira] [Commented] (SOLR-15269) upgrade httpclient to address CVE-2020-13956",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r0bebe6f9808ac7bdf572873b4fa96a29c6398c90dab29f131f3ebffe@%3Cissues.solr.apache.org%3E"
},
{
"name": "[solr-issues] 20211011 [jira] [Resolved] (SOLR-15269) upgrade httpclient to address CVE-2020-13956",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r4850b3fbaea02fde2886e461005e4af8d37c80a48b3ce2a6edca0e30@%3Cissues.solr.apache.org%3E"
},
{
"name": "[lucene-issues] 20211011 [GitHub] [lucene-solr] madrob merged pull request #2579: SOLR-15269: Upgrade Apache HttpComponents Client to 4.5.13 to fix CVE-2020-13956",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/ra8bc6b61c5df301a6fe5a716315528ecd17ccb8a7f907e24a47a1a5e@%3Cissues.lucene.apache.org%3E"
},
{
"name": "[solr-issues] 20211019 [jira] [Closed] (SOLR-15269) upgrade httpclient to address CVE-2020-13956",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r0a75b8f0f72f3e18442dc56d33f3827b905f2fe5b7ba48997436f5d1@%3Cissues.solr.apache.org%3E"
},
{
"name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
},
{
"name": "[ranger-dev] 20211028 [jira] [Commented] (RANGER-3100) Upgrade httpclient version from 4.5.6 to 4.5.13+ due to CVE-2020-13956",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r69a94e2f302d1b778bdfefe90fcb4b8c50b226438c3c8c1d0de85a19@%3Cdev.ranger.apache.org%3E"
},
{
"name": "https://www.oracle.com/security-alerts/cpujan2022.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpujan2022.html"
},
{
"name": "https://www.oracle.com/security-alerts/cpuapr2022.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"name": "https://security.netapp.com/advisory/ntap-20220210-0002/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20220210-0002/"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"assignerShortName": "apache",
"cveId": "CVE-2020-13956",
"datePublished": "2020-12-02T16:20:12.000Z",
"dateReserved": "2020-06-08T00:00:00.000Z",
"dateUpdated": "2026-10-08T18:44:13.434Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.