CVE-2026-103046 (GCVE-0-2026-103046)
Vulnerability from cvelistv5 – Published: 2026-09-29 22:41 – Updated: 2026-09-29 22:52
VLAI
EPSS
VEX
Title
WikifunctionsFragmentRenderer does unsafe string replacements on user-provided HTML
Summary
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - WikiLambda extension allows Stored XSS.
This issue affects MediaWiki - WikiLambda extension: before 1.46.1.
Severity
No CVSS data available.
CWE
- CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://phabricator.wikimedia.org/T428829 | issue-tracking |
| https://gerrit.wikimedia.org/r/c/1307827 | mitigation |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| The Wikimedia Foundation | Mediawiki - WikiLambda Extension |
Affected:
0 , < 1.46.1
(semver)
|
guessed |
Date Public
2026-09-29 22:32
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],
"impacts": [
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"descriptions": [
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"problemTypes": [
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"providerMetadata": {
"dateUpdated": "2026-09-29T22:52:46.221Z",
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{
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}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "WikifunctionsFragmentRenderer does unsafe string replacements on user-provided HTML",
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"datePublished": "2026-09-29T22:41:36.099Z",
"dateReserved": "2026-09-29T22:29:32.001Z",
"dateUpdated": "2026-09-29T22:52:46.221Z",
"state": "PUBLISHED"
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"id": "CVE-2026-103046",
"lastModified": "2026-09-29T23:17:22.450",
"metrics": {},
"published": "2026-09-29T23:17:22.450",
"references": [
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"redhat_vex": {
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"cve": "CVE-2026-103046",
"id": "CVE-2026-103046",
"initial_release_date": "2026-09-29T22:41:36.099000+00:00",
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"title": "WikiLambda: MediaWiki: WikiLambda: Stored cross-site scripting via unsafe string replacements in WikifunctionsFragmentRenderer",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-103046.json",
"version": "3"
}
}
}
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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.
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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
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