Vulnerability-Lookup

GHSA-V9CH-CF39-43VR

Vulnerability from github – Published: 2026-09-28 18:31 – Updated: 2026-09-28 18:31

Details

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

6.9 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-91154"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-28T16:17:17Z",
    "severity": "MODERATE"
  },
  "details": "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\u0027s 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\u0027s request to read the full product catalog from Postgres instead of serving from cache, degrading storefront availability at near-zero attacker cost.",
  "id": "GHSA-v9ch-cf39-43vr",
  "modified": "2026-09-28T18:31:24Z",
  "published": "2026-09-28T18:31:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91154"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MarcosCamara01/ecommerce-template/commit/ec97209e6c7663cba7b5164468d6946cbfe2f19a"
    },
    {
      "type": "WEB",
      "url": "https://secur0.com/en/cna/cve-list/cve-2026-91154-missing-authentication-ecommerce-template-cache-revalidation-dos"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

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

Title

Missing authentication in Ecommerce Template product cache revalidation allows unauthenticated denial of service

Summary

Severity

6.9 (Medium)


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

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

Secur0 INCIBE root

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
MarcosCamara01	Ecommerce Template	Affected: 0 , < ec97209 (custom) cpe:2.3:a:marcoscamara01:ecommerce-template::::::::

Credits

Robert Mihaila Amirreza Fadaeizadeh Bidari Dario Rivas Quero Secur0 CNA

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                  },
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-28T17:52:26.669048Z",
                "version": "2.0.3"
              },
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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            "src/app/actions.ts"
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          "nodes": [
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        }
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      "impacts": [
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      "metrics": [
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
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            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
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            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
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            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "scenarios": [
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              "lang": "en",
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    "datePublished": "2026-09-28T15:29:03.261Z",
    "dateReserved": "2026-09-14T21:05:54.953Z",
    "dateUpdated": "2026-09-28T17:52:40.759Z",
    "state": "PUBLISHED"
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  "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.

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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

GHSA-V9CH-CF39-43VR

CVE-2026-91154 (GCVE-0-2026-91154)

Tags

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Nomenclature

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