CVE-2026-126565

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Source

https://cve.org/CVERecord?id=CVE-2026-126565

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126565.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-126565

Aliases

GHSA-24v2-mf3g-84ch

Published

2026-11-11T02:36:00Z

Modified

2026-11-12T02:48:34Z

Severity

5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator

Summary

Semantic MediaWiki 3.0.0 before 7.4.1 DoS via Exponential Concept Expansion

Details

Semantic MediaWiki 3.0.0 before 7.4.1 contains a denial of service vulnerability in the ElasticStore and SPARQLStore ConceptDescriptionInterpreter classes, which re-expand concepts without memoization or an expansion budget. Users with page-edit rights can build acyclic chains of Concept: pages that fan out, so queries via concept page views, Special:Ask, or api.php action=ask exhaust CPU and memory.

Database specific

{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-407"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126565.json"
}

References

Affected packages

Git / github.com/semanticmediawiki/semanticmediawiki

Affected ranges

Type

GIT

Repo

https://github.com/semanticmediawiki/semanticmediawiki

Events

Introduced

abdec882fc57dd5b54cab15e8f419056164ee66a

Fixed

bcc3cbf4884f0474232a68d3eff060f93a506379

Fixed

86ce13254ffd91406ef43ea403ae072a7e3a38b3

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "3.0.0"
                },
                {
                    "fixed": "7.4.1"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "fixed": "86ce13254ffd91406ef43ea403ae072a7e3a38b3"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "7.4.1",
            "range": [
                {
                    "fixed": "bcc3cbf4884f0474232a68d3eff060f93a506379"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

3.*

3.0.0

3.1.0

3.1.0-rc.1

3.2.0

3.2.0-rc.1

3.2.0-rc.2

4.*

4.0.0

4.0.1

4.0.2

4.1.0

4.1.1

4.1.2

4.1.3

4.2.0

5.*

5.0.0

5.0.1

5.0.2

5.1.0

6.*

6.0.0

6.0.1

7.*

7.0.0

7.1.0

7.2.0

7.2.1

7.3.0

7.3.1

7.4.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126565.json"