Vulnerability-Lookup

UBUNTU-CVE-2026-18369 (CVE-2026-18369)

Vulnerability from osv_ubuntu – Published: 2026-07-30 11:16 – Updated: 2026-08-06 00:12 – Source website

Details

A flaw was found in Dogtag PKI's ACME responder where the HTTP-01 challenge validator accepts IP address literals as dns identifiers and follows HTTP redirects without validating that the target is a public address. An unauthenticated ACME account holder can exploit this to perform server-side request forgery (SSRF), making the Dogtag server send HTTP GET requests to internal network services. With the InMemory database backend, the response body of internal targets is disclosed to the attacker through the ACME challenge error.

Severity

5.8 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-18369	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-18369	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2509234	REPORT
	https://access.redhat.com/security/cve/CVE-2026-18369	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "dogtag-pki",
            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
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            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
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          {
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          {
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            "binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
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            "binary_version": "10.6.0-1ubuntu2+esm1"
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            "binary_version": "10.6.0-1ubuntu2+esm1"
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            "binary_version": "10.8.3-1ubuntu1+esm1"
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            "binary_version": "10.8.3-1ubuntu1+esm1"
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            "binary_version": "10.8.3-1ubuntu1+esm1"
          },
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          {
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          {
            "binary_name": "pki-base-java",
            "binary_version": "10.8.3-1ubuntu1+esm1"
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            "binary_version": "10.8.3-1ubuntu1+esm1"
          },
          {
            "binary_name": "pki-console",
            "binary_version": "10.8.3-1ubuntu1+esm1"
          },
          {
            "binary_name": "pki-javadoc",
            "binary_version": "10.8.3-1ubuntu1+esm1"
          },
          {
            "binary_name": "pki-kra",
            "binary_version": "10.8.3-1ubuntu1+esm1"
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          {
            "binary_name": "pki-ocsp",
            "binary_version": "10.8.3-1ubuntu1+esm1"
          },
          {
            "binary_name": "pki-server",
            "binary_version": "10.8.3-1ubuntu1+esm1"
          },
          {
            "binary_name": "pki-tks",
            "binary_version": "10.8.3-1ubuntu1+esm1"
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          {
            "binary_name": "pki-tools",
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        "name": "dogtag-pki",
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            "binary_version": "11.0.0-1ubuntu0.1~esm1"
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            "binary_name": "pki-ocsp",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "pki-server",
            "binary_version": "11.0.0-1ubuntu0.1~esm1"
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            "binary_name": "pki-tks",
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      "package": {
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        "name": "dogtag-pki",
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        "11.0.0-1",
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    }
  ],
  "aliases": [],
  "details": "A flaw was found in Dogtag PKI\u0027s ACME responder where the HTTP-01 challenge validator accepts IP address literals as dns identifiers and follows HTTP redirects without validating that the target is a public address. An unauthenticated ACME account holder can exploit this to perform server-side request forgery (SSRF), making the Dogtag server send HTTP GET requests to internal network services. With the InMemory database backend, the response body of internal targets is disclosed to the attacker through the ACME challenge error.",
  "id": "UBUNTU-CVE-2026-18369",
  "modified": "2026-08-06T00:12:19Z",
  "published": "2026-07-30T11:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-18369"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-18369"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2509234"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-18369"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-18369"
  ]
}

CVE-2026-18369 (GCVE-0-2026-18369)

Vulnerability from cvelistv5 – Published: 2026-07-30 10:32 – Updated: 2026-09-14 05:28

Title

Dogtag-pki: pki-core: redhat-pki: pki: acme http-01 validation ssrf via ip literal identifiers and unvalidated redirects

Summary

Severity

5.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 13:43 UTC

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

redhat redhat root

References

3 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:67110	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-18369	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2509234	issue-trackingx_refsource_REDHAT

Impacted products

9 products

Vendor	Product	Version
Red Hat	Red Hat Certificate System 10.4 EUS for RHEL-8	Unaffected: 8060020260814202723.07fb4edf , < * (rpm) cpe:/a:redhat:certificate_system_eus:10.4::el8
Red Hat	Red Hat Certificate System 10	cpe:/a:redhat:certificate_system:10
Red Hat	Red Hat Certificate System 11	cpe:/a:redhat:certificate_system:11
Red Hat	Red Hat Certificate System 9	cpe:/a:redhat:certificate_system:9
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2026-07-30 10:02

Show details on NVD website

JSON

To clipboard

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            {
              "cweId": "CWE-918",
              "description": "Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T05:28:08.089Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "name": "RHSA-2026:67110",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:67110"
        },
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2026-18369"
        },
        {
          "name": "RHBZ#2509234",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2509234"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-07-29T00:00:00.000Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-07-30T10:02:44.330Z",
          "value": "Made public."
        }
      ],
      "title": "Dogtag-pki: pki-core: redhat-pki: pki: acme http-01 validation ssrf via ip literal identifiers and unvalidated redirects",
      "workarounds": [
        {
          "lang": "en",
          "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-918: Server-Side Request Forgery (SSRF)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-18369",
    "datePublished": "2026-07-30T10:32:23.364Z",
    "dateReserved": "2026-07-30T09:59:47.272Z",
    "dateUpdated": "2026-09-14T05:28:08.089Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.

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.

Action not permitted

UBUNTU-CVE-2026-18369 (CVE-2026-18369)

CVE-2026-18369 (GCVE-0-2026-18369)

Tags

Sightings

Nomenclature

Related by attack behaviour