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Common Weakness Enumeration

CWE-185

Allowed-with-Review

Incorrect Regular Expression

Abstraction: Class · Status: Draft

The product specifies a regular expression in a way that causes data to be improperly matched or compared.

75 vulnerabilities reference this CWE, most recent first.

CVE-2026-27895 (GCVE-0-2026-27895)

Vulnerability from cvelistv5 – Published: 2026-03-17 23:51 – Updated: 2026-03-18 19:55
VLAI
Title
LAM has incorrect regular expression in PDF export component that allows user to upload files of any type
Summary
LDAP Account Manager (LAM) is a webfrontend for managing entries (e.g. users, groups, DHCP settings) stored in an LDAP directory. Prior to version 9.5, the PDF export component does not correctly validate uploaded file extensions. This way any file type (including .php files) can be uploaded. With GHSA-w7xq-vjr3-p9cf, an attacker can achieve remote code execution as the web server user. Version 9.5 fixes the issue. Although upgrading is recommended, a workaround would be to make /var/lib/ldap-account-manager/config read-only for the web-server user.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-18 19:55 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
Impacted products
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-27895",
                "options": [
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                  },
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                "timestamp": "2026-03-18T19:55:04.254873Z",
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
      "affected": [
        {
          "product": "lam",
          "vendor": "LDAPAccountManager",
          "versions": [
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              "version": "\u003c 9.5"
            }
          ]
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          "value": "LDAP Account Manager (LAM) is a webfrontend for managing entries (e.g. users, groups, DHCP settings) stored in an LDAP directory. Prior to version 9.5, the PDF export component does not correctly validate uploaded file extensions. This way any file type (including .php files) can be uploaded. With GHSA-w7xq-vjr3-p9cf, an attacker can achieve remote code execution as the web server user. Version 9.5 fixes the issue. Although upgrading is recommended, a workaround would be to make /var/lib/ldap-account-manager/config read-only for the web-server user."
        }
      ],
      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
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        "discovery": "UNKNOWN"
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      "title": "LAM has incorrect regular expression in PDF export component that allows user to upload files of any type"
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    "dateReserved": "2026-02-24T15:19:29.717Z",
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  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-25896 (GCVE-0-2026-25896)

Vulnerability from cvelistv5 – Published: 2026-02-20 20:57 – Updated: 2026-09-10 12:04
VLAI
Title
fast-xml-parser has an entity encoding bypass via regex injection in DOCTYPE entity names
Summary
fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. From 4.1.3to before 5.3.5, a dot (.) in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow built-in XML entities (<, >, &, ", ') with arbitrary values. This bypasses entity encoding and leads to XSS when parsed output is rendered. This vulnerability is fixed in 5.3.5.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-23 19:26 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Impacted products
Vendor Product Version
NaturalIntelligence fast-xml-parser Affected: >= 5.0.0, < 5.3.5
Affected: >= 4.1.3, < 4.5.4
Create a notification for this product.
Red Hat Red Hat Advanced Cluster Security 4.8 Unaffected: 1775594119 , < * (rpm)
    cpe:/a:redhat:advanced_cluster_security:4.8::el8
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Red Hat Red Hat Advanced Cluster Security 4.9 Unaffected: 1775594284 , < * (rpm)
    cpe:/a:redhat:advanced_cluster_security:4.9::el8
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Red Hat Red Hat Developer Hub 1.8 Unaffected: 1774545605 , < * (rpm)
    cpe:/a:redhat:rhdh:1.8::el9
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Red Hat Red Hat Developer Hub 1.9 Unaffected: 1775140647 , < * (rpm)
    cpe:/a:redhat:rhdh:1.9::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1783676191 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1783929816 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1784094353 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1784093953 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1784094943 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1783676585 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1783676649 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1783676675 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1784094299 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1784094725 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1783676820 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1783676883 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1783676894 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1784095175 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1783676977 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1784093503 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1783677297 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1783677345 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.18 Unaffected: 1783677533 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.18::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1783684360 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1783684068 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1784054582 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1784054606 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1784055295 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1783684603 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1783684668 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1783684667 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1784054873 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1783684707 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1784055589 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1783684779 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1783684831 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1783684839 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1784055533 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1784055558 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1784056134 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1783685128 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1783685129 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.19 Unaffected: 1783685375 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.19::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783667125 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783666755 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1784054598 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1784055387 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1784055726 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783667517 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783667577 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783667611 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1784055020 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783667641 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1784055586 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783667790 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783667859 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783667875 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783667869 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783667877 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1784055576 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1784055244 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1784055382 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783668266 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783668288 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Openshift Data Foundation 4.20 Unaffected: 1783669219 , < * (rpm)
    cpe:/a:redhat:openshift_data_foundation:4.20::el9
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Red Hat Red Hat Satellite 6.18 Unaffected: 1785922764 , < * (rpm)
    cpe:/a:redhat:satellite:6.18::el9
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Red Hat Migration Toolkit for Applications 8     cpe:/a:redhat:migration_toolkit_applications:8
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Red Hat Red Hat OpenShift GitOps     cpe:/a:redhat:openshift_gitops:1
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Red Hat Red Hat OpenShift Virtualization 4     cpe:/a:redhat:container_native_virtualization:4
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Red Hat Red Hat Satellite 6     cpe:/a:redhat:satellite:6
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Red Hat Self-service automation portal 2     cpe:/a:redhat:ansible_portal:2
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Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-25896",
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              "cpe:/a:redhat:advanced_cluster_security:4.8::el8"
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            "product": "Red Hat Advanced Cluster Security 4.8",
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            "cpes": [
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            "defaultStatus": "affected",
            "packageName": "rhdh/rhdh-hub-rhel9",
            "product": "Red Hat Developer Hub 1.8",
            "vendor": "Red Hat",
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            "product": "Red Hat Developer Hub 1.9",
            "vendor": "Red Hat",
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                "lessThan": "*",
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                "version": "1775140647",
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            "collectionURL": "https://catalog.redhat.com/software/containers/",
            "cpes": [
              "cpe:/a:redhat:openshift_data_foundation:4.18::el9"
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            "defaultStatus": "affected",
            "packageName": "odf4/cephcsi-rhel9",
            "product": "Red Hat Openshift Data Foundation 4.18",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
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            "collectionURL": "https://catalog.redhat.com/software/containers/",
            "cpes": [
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            "defaultStatus": "affected",
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            "collectionURL": "https://catalog.redhat.com/software/containers/",
            "cpes": [
              "cpe:/a:redhat:openshift_data_foundation:4.18::el9"
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            "defaultStatus": "affected",
            "packageName": "odf4/mcg-core-rhel9",
            "product": "Red Hat Openshift Data Foundation 4.18",
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CVE-2026-25542 (GCVE-0-2026-25542)

Vulnerability from cvelistv5 – Published: 2026-04-21 16:05 – Updated: 2026-05-22 16:06
VLAI
Title
Tekton Pipelines: VerificationPolicy regex pattern bypass via substring matching
Summary
Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 0.43.0 and prior to versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1, trusted resources verification policies match a resource source string (refSource.URI) against spec.resources[].pattern using regexp.MatchString. In Go, regexp.MatchString reports a match if the pattern matches anywhere in the string, so common unanchored patterns (including examples in tekton documentation) can be bypassed by attacker-controlled source strings that contain the trusted pattern as a substring. This can cause an unintended policy match and change which verification mode/keys apply. Versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1 fix the issue.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-21 16:48 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
References
Impacted products
Vendor Product Version
tektoncd pipeline Affected: >= 0.43.0, < 1.0.2
Affected: >= 1.2.0, < 1.3.4
Affected: >= 1.4.0, < 1.6.2
Affected: >= 1.7.0, < 1.9.3
Affected: >= 1.10.0, < 1.11.1
Create a notification for this product.
Show details on NVD website

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CVE-2026-25479 (GCVE-0-2026-25479)

Vulnerability from cvelistv5 – Published: 2026-02-09 18:48 – Updated: 2026-02-10 16:01
VLAI
Title
Litestar has an AllowedHosts validation bypass due to unescaped regex metacharacters in configured host patterns
Summary
Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. Prior to 2.20.0, in litestar.middleware.allowed_hosts, allowlist entries are compiled into regex patterns in a way that allows regex metacharacters to retain special meaning (e.g., . matches any character). This enables a bypass where an attacker supplies a host that matches the regex but is not the intended literal hostname. This vulnerability is fixed in 2.20.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-10 15:39 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
Impacted products
Vendor Product Version
litestar-org litestar Affected: < 2.20.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-24398 (GCVE-0-2026-24398)

Vulnerability from cvelistv5 – Published: 2026-01-27 19:06 – Updated: 2026-01-27 19:20
VLAI
Title
Hono's IPv4 address validation bypass in IP Restriction Middleware allows IP spoofing
Summary
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.11.7, IP Restriction Middleware in Hono is vulnerable to an IP address validation bypass. The `IPV4_REGEX` pattern and `convertIPv4ToBinary` function in `src/utils/ipaddr.ts` do not properly validate that IPv4 octet values are within the valid range of 0-255, allowing attackers to craft malformed IP addresses that bypass IP-based access controls. Version 4.11.7 contains a patch for the issue.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-27 19:18 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
Impacted products
Vendor Product Version
honojs hono Affected: < 4.11.7
Create a notification for this product.
Show details on NVD website

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CVE-2026-4296 (GCVE-0-2026-4296)

Vulnerability from cvelistv5 – Published: 2026-04-21 22:12 – Updated: 2026-04-22 13:16
VLAI
Title
Incorrect Regular Expression vulnerability in GitHub Enterprise Server allowed unauthorized access to user accounts via OAuth callback URL validation bypass
Summary
An incorrect regular expression vulnerability was identified in GitHub Enterprise Server that allowed an attacker to bypass OAuth redirect URI validation. An attacker with knowledge of a first-party OAuth application's registered callback URL could craft a malicious authorization link that, when clicked by a victim, would redirect the OAuth authorization code to an attacker-controlled domain. This could allow the attacker to gain unauthorized access to the victim's account with the scopes granted to the OAuth application. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-22 13:16 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.14.0 , ≤ 3.14.25 (semver)
Affected: 3.15.0 , ≤ 3.15.20 (semver)
Affected: 3.16.0 , ≤ 3.16.16 (semver)
Affected: 3.17.0 , ≤ 3.17.13 (semver)
Affected: 3.18.0 , ≤ 3.18.7 (semver)
Affected: 3.19.0 , ≤ 3.19.4 (semver)
Affected: 3.20.0 , < 3.20.1 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-3419 (GCVE-0-2026-3419)

Vulnerability from cvelistv5 – Published: 2026-03-06 17:50 – Updated: 2026-03-09 14:55
VLAI
Title
Fastify's Missing End Anchor in "subtypeNameReg" Allows Malformed Content-Types to Pass Validation
Summary
Fastify incorrectly accepts malformed `Content-Type` headers containing trailing characters after the subtype token, in violation of RFC 9110 §8.3.1(https://httpwg.org/specs/rfc9110.html#field.content-type). For example, a request sent with Content-Type: application/json garbage passes validation and is processed normally, rather than being rejected with 415 Unsupported Media Type. When regex-based content-type parsers are in use (a documented Fastify feature), the malformed value is matched against registered parsers using the full string including the trailing garbage. This means a request with an invalid content-type may be routed to and processed by a parser it should never have reached. Impact: An attacker can send requests with RFC-invalid Content-Type headers that bypass validity checks, reach content-type parser matching, and be processed by the server. Requests that should be rejected at the validation stage are instead handled as if the content-type were valid. Workarounds: Deploy a WAF rule to protect against this Fix: The fix is available starting with v5.8.1.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-09 14:55 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
Impacted products
Vendor Product Version
fastify fastify Affected: 5.7.2 , < 5.8.1 (semver)
Unaffected: 5.8.1 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2025-54365 (GCVE-0-2025-54365)

Vulnerability from cvelistv5 – Published: 2025-07-23 22:11 – Updated: 2025-07-24 13:36
VLAI
Title
fastapi-guard patch contains bypassable RegEx
Summary
fastapi-guard is a security library for FastAPI that provides middleware to control IPs, log requests, detect penetration attempts and more. In version 3.0.1, the regular expression patched to mitigate the ReDoS vulnerability by limiting the length of string fails to catch inputs that exceed this limit. This type of patch fails to detect cases in which the string representing the attributes of a <script> tag exceeds 100 characters. As a result, most of the regex patterns present in version 3.0.1 can be bypassed. This is fixed in version 3.0.2.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-24 13:13 UTC
CWE
  • CWE-20 - Improper Input Validation
  • CWE-185 - Incorrect Regular Expression
Impacted products
Vendor Product Version
rennf93 fastapi-guard Affected: >= 3.0.1, < 3.0.2
Create a notification for this product.
Show details on NVD website

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CVE-2025-20139 (GCVE-0-2025-20139)

Vulnerability from cvelistv5 – Published: 2025-04-02 16:16 – Updated: 2025-04-02 16:33
VLAI
Summary
A vulnerability in chat messaging features of Cisco Enterprise Chat and Email (ECE) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper validation of user-supplied input to chat entry points. An attacker could exploit this vulnerability by sending malicious requests to a messaging chat entry point in the affected application. A successful exploit could allow the attacker to cause the application to stop responding, resulting in a DoS condition. The application may not recover on its own and may need an administrator to manually restart services to recover.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-02 16:33 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
Impacted products
Vendor Product Version
Cisco Cisco Enterprise Chat and Email Affected: 11.5(1)
Affected: 11.6(1)
Affected: 11.6(1)_ES2
Affected: 11.6(1)_ES3
Affected: 11.6(1)_ES4
Affected: 11.6(1)_ES5
Affected: 11.6(1)_ES6
Affected: 11.6(1)_ES10
Affected: 11.6(1)_ES11
Affected: 11.6(1)_ES7
Affected: 11.6(1)_ES8
Affected: 11.6(1)_ES9
Affected: 11.6(1)_ES9a
Affected: 11.6(1)_ES12
Affected: 11.6(1)_ES12_ET1
Affected: 12.0(1)
Affected: 12.0(1)_ES1
Affected: 12.0(1)_ES2
Affected: 12.0(1)_ES3
Affected: 12.0(1)_ES4
Affected: 12.0(1)_ES5
Affected: 12.0(1)_ES5a
Affected: 12.0(1)_ES6
Affected: 12.0(1)_ES6_ET1
Affected: 12.0(1)_ES6_ET2
Affected: 12.0(1)_ES6_ET3
Affected: 12.0(1)_ES7
Affected: 12.0(1)_ES7_ET1
Affected: 12.5(1)
Affected: 12.5(1)_ES1
Affected: 12.5(1)_ES2
Affected: 12.5(1)_ES3
Affected: 12.5(1)_ES3_ET1
Affected: 12.5(1)_ET1
Affected: 12.5(1)_ES4
Affected: 12.5(1)_ES3_ET2
Affected: 12.5(1)_ES4_ET1
Affected: 12.5(1)_ES5
Affected: 12.5(1)_ES5_ET1
Affected: 12.5(1)_ES6
Affected: 12.5(1)_ES7
Affected: 12.5(1)_ES8
Affected: 12.5(1)_ES8_ET1
Affected: 12.5(1)_ES3_ET3
Affected: 12.5(1)_ES5_ET2
Affected: 12.5(1)_ES6_ET1
Affected: 12.5(1)_ES4_ET2
Affected: 12.5(1)_ES7_ET1
Affected: 12.5(1)_ES9
Affected: 12.6(1)
Affected: 12.6(1)_ET1
Affected: 12.6(1)_ET2
Affected: 12.6(1)_ES1
Affected: 12.6(1)_ET3
Affected: 12.6(1)_ES1_ET1
Affected: 12.6(1)_ES2
Affected: 12.6(1)_ES3
Affected: 12.6(1)_ES4
Affected: 12.6(1)_ES4_ET1
Affected: 12.6(1)_ES5
Affected: 12.6(1)_ES5_ET1
Affected: 12.6(1)_ES5_ET2
Affected: 12.6(1)_ES6
Affected: 12.6(1)_ES6_ET1
Affected: 12.6(1)_ES6_ET2
Affected: 12.6(1)_ES7
Affected: 12.6(1)_ES8
Affected: 12.6(1)_ES4_ET2
Affected: 12.6(1)_ES3_ET3
Affected: 12.6(1)_ES2_ET5
Affected: 12.6(1)_ES1_ET2
Affected: 12.6(1)_ES8_ET1
Affected: 12.6(1)_ES7_ET1
Affected: 12.6(1)_ES6_ET3
Affected: 12.6(1)_ES5_ET3
Affected: 12.6(1)_ES8_ET2
Affected: 12.6(1)_ES9
Affected: 12.6(1)_ES9_ET1
Affected: 12.6(1)_ES9_ET2
Affected: 12.6(1)_ES9_ET3
Affected: 12.6_ES2_ET1
Affected: 12.6_ES2_ET2
Affected: 12.6_ES2_ET3
Affected: 12.6_ES2_ET4
Affected: 12.6_ES3_ET1
Affected: 12.6_ES3_ET2
Create a notification for this product.
Show details on NVD website

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CVE-2024-52289 (GCVE-0-2024-52289)

Vulnerability from cvelistv5 – Published: 2024-11-21 17:18 – Updated: 2025-09-23 18:21
VLAI
Title
authentik has an insecure default configuration for OAuth2 Redirect URIs
Summary
authentik is an open-source identity provider. Redirect URIs in the OAuth2 provider in authentik are checked by RegEx comparison. When no Redirect URIs are configured in a provider, authentik will automatically use the first redirect_uri value received as an allowed redirect URI, without escaping characters that have a special meaning in RegEx. Similarly, the documentation did not take this into consideration either. Given a provider with the Redirect URIs set to https://foo.example.com, an attacker can register a domain fooaexample.com, and it will correctly pass validation. authentik 2024.8.5 and 2024.10.3 fix this issue. As a workaround, When configuring OAuth2 providers, make sure to escape any wildcard characters that are not intended to function as a wildcard, for example replace `.` with `\.`.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-21 20:44 UTC
CWE
  • CWE-185 - Incorrect Regular Expression
Impacted products
Vendor Product Version
goauthentik authentik Affected: < 2024.8.5
Affected: >= 2024.10.0-rc1, < 2024.10.3
Create a notification for this product.
goauthentik authentik Affected: 0 , < 2024.8.5 (custom)
Affected: 2024.10.0-rc1 , < 2024.10.3 (custom)
    cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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Mitigation MIT-45
Implementation

Strategy: Refactoring

Regular expressions can become error prone when defining a complex language even for those experienced in writing grammars. Determine if several smaller regular expressions simplify one large regular expression. Also, subject the regular expression to thorough testing techniques such as equivalence partitioning, boundary value analysis, and robustness. After testing and a reasonable confidence level is achieved, a regular expression may not be foolproof. If an exploit is allowed to slip through, then record the exploit and refactor the regular expression.

CAPEC-15: Command Delimiters

An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or denylist input validation, as opposed to allowlist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or denylist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.

CAPEC-6: Argument Injection

An attacker changes the behavior or state of a targeted application through injecting data or command syntax through the targets use of non-validated and non-filtered arguments of exposed services or methods.

CAPEC-79: Using Slashes in Alternate Encoding

This attack targets the encoding of the Slash characters. An adversary would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the adversary many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.