CVE-2026-91154 (GCVE-0-2026-91154)
Vulnerability from cvelistv5 – Published: 2026-09-28 15:29 – Updated: 2026-09-28 17:52 X_Open Source
VLAI
EPSS
VEX
Title
Missing authentication in Ecommerce Template product cache revalidation allows unauthenticated denial of service
Summary
Missing Authentication for Critical Function (CWE-306) in the product cache revalidation Server Action (src/app/actions.ts, revalidateProducts) in MarcosCamara01 Ecommerce Template before commit ec97209 allows a remote, unauthenticated attacker to force expiration of the entire storefront product cache at will. The file declares "use server" at file scope, so every exported function compiles into a POST-invokable Server Action; revalidateProducts calls updateTag("products") with no session or role check, unlike the read-only actions in the same file which are safe by construction. Two client components under src/components/admin import the function, which causes its Server Action id to be compiled into a public /_next/static chunk that the application's admin middleware (proxy.ts) does not gate, so any unauthenticated user can extract that id from the public bundle and invoke the action directly. With cacheComponents enabled, the entire storefront (home, categories, product pages, search) is served from "use cache" entries produced by getAllProducts, getCategoryProducts and getProduct, all tagged products with an hours-long cacheLife. Repeated unauthenticated invocation of revalidateProducts keeps that cache permanently cold, forcing every visitor's request to read the full product catalog from Postgres instead of serving from cache, degrading storefront availability at near-zero attacker cost.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 17:52 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/MarcosCamara01/ecommerce-templ… | patch |
| https://secur0.com/en/cna/cve-list/cve-2026-91154… | third-party-advisorytechnical-description |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| MarcosCamara01 | Ecommerce Template |
Affected:
0 , < ec97209
(custom)
cpe:2.3:a:marcoscamara01:ecommerce-template:*:*:*:*:*:*:*:* |
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"url": "https://secur0.com/en/cna/cve-list/cve-2026-91154-missing-authentication-ecommerce-template-cache-revalidation-dos"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eUpdate to a build including commit \u003ccode\u003eec97209\u003c/code\u003e, which moves \u003ccode\u003erevalidateProducts\u003c/code\u003e out of the file-scoped \u003ccode\u003e\"use server\"\u003c/code\u003e module into a server-only module and restricts its only network-reachable caller (\u003ccode\u003eGET /api/cron/catalog-sync\u003c/code\u003e) with an internal credential check. Do not export unauthenticated mutations from a file-scoped \u003ccode\u003e\"use server\"\u003c/code\u003e module; gate any cache-invalidation action behind an admin/session check or remove the client-callable export entirely.\u003c/p\u003e"
}
],
"value": "Update to a build including commit ec97209, which moves revalidateProducts out of the file-scoped \"use server\" module into a server-only module and restricts its only network-reachable caller (GET /api/cron/catalog-sync) with an internal credential check. Do not export unauthenticated mutations from a file-scoped \"use server\" module; gate any cache-invalidation action behind an admin/session check or remove the client-callable export entirely."
}
],
"source": {
"discovery": "EXTERNAL"
},
"tags": [
"x_open-source"
],
"title": "Missing authentication in Ecommerce Template product cache revalidation allows unauthenticated denial of service"
}
},
"cveMetadata": {
"assignerOrgId": "4daa8cea-433a-44bd-9456-53b127fc289a",
"assignerShortName": "Secur0",
"cveId": "CVE-2026-91154",
"datePublished": "2026-09-28T15:29:03.261Z",
"dateReserved": "2026-09-14T21:05:54.953Z",
"dateUpdated": "2026-09-28T17:52:40.759Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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
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.
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