Vulnerability-Lookup

CVE-2026-33266 (GCVE-0-2026-33266)

Vulnerability from cvelistv5 – Published: 2026-04-09 15:52 – Updated: 2026-04-10 18:49

Title

Apache OpenMeetings: Hardcoded Remember-Me Cookie Encryption Key and Salt

Summary

Use of Hard-coded Cryptographic Key vulnerability in Apache OpenMeetings. The remember-me cookie encryption key is set to default value in openmeetings.properties and not being auto-rotated. In case OM admin hasn't changed the default encryption key, an attacker who has stolen a cookie from a logged-in user can get full user credentials. This issue affects Apache OpenMeetings: from 6.1.0 before 9.0.0. Users are recommended to upgrade to version 9.0.0, which fixes the issue.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-10 18:47 UTC

CWE

CWE-321 - Use of Hard-coded Cryptographic Key

Assigner

apache mitre root

References

2 references

URL	Tags
https://lists.apache.org/thread/b05jnp9563v49zq49…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/0…

Impacted products

1 product

Vendor	Product	Version	CPE status
Apache Software Foundation	Apache OpenMeetings	Affected: 6.1.0 , < 9.0.0 (semver)	guessed

Credits

4ra2n (A code security AI agent)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-33266

Vulnerability from fkie_nvd - Published: 2026-04-09 16:16 - Updated: 2026-06-17 10:37

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/b05jnp9563v49zq494lox9kjbhhf2w66	Mailing List, Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/04/09/11	Mailing List, Third Party Advisory

Impacted products

	Vendor	Product	Version
	apache	openmeetings	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Apache OpenMeetings",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThan": "9.0.0",
              "status": "affected",
              "version": "6.1.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@apache.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:openmeetings:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "236D7F83-A2F6-4F00-A800-D7E661A4B1BE",
              "versionEndExcluding": "9.0.0",
              "versionStartIncluding": "6.1.0",
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    }
  ],
  "id": "CVE-2026-33266",
  "lastModified": "2026-06-17T10:37:13.327",
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          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
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        "impactScore": 3.6,
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        "type": "Secondary"
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GHSA-WQXQ-W68R-WG85

Vulnerability from github – Published: 2026-04-09 18:31 – Updated: 2026-04-10 21:34

Summary

Apache OpenMeetings Uses Hard-coded Cryptographic Key

Details

Use of Hard-coded Cryptographic Key vulnerability in Apache OpenMeetings.

The remember-me cookie encryption key is set to default value in openmeetings.properties and not being auto-rotated. In case OM admin hasn't changed the default encryption key, an attacker who has stolen a cookie from a logged-in user can get full user credentials.

This issue affects Apache OpenMeetings: from 6.1.0 before 9.0.0.

Users are recommended to upgrade to version 9.0.0, which fixes the issue.

Severity

7.5 (High)


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

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.openmeetings:openmeetings-parent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.1.0"
            },
            {
              "fixed": "9.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-33266"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-321"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-10T21:23:53Z",
    "nvd_published_at": "2026-04-09T16:16:26Z",
    "severity": "HIGH"
  },
  "details": "Use of Hard-coded Cryptographic Key vulnerability in Apache OpenMeetings.\n\nThe remember-me cookie encryption key is set to default value in openmeetings.properties and not being auto-rotated. In case OM admin hasn\u0027t changed the default encryption key, an attacker who has stolen a cookie from a logged-in user can get full user credentials.\n\n\nThis issue affects Apache OpenMeetings: from 6.1.0 before 9.0.0.\n\nUsers are recommended to upgrade to version 9.0.0, which fixes the issue.",
  "id": "GHSA-wqxq-w68r-wg85",
  "modified": "2026-04-10T21:34:59Z",
  "published": "2026-04-09T18:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33266"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/openmeetings"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/b05jnp9563v49zq494lox9kjbhhf2w66"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/09/11"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Apache OpenMeetings Uses Hard-coded Cryptographic Key"
}

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.

Detection rules are retrieved from Rulezet.

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

CVE-2026-33266 (GCVE-0-2026-33266)

FKIE_CVE-2026-33266

GHSA-WQXQ-W68R-WG85

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Related by attack behaviour