Vulnerability-Lookup

CVE-2026-15141 (GCVE-0-2026-15141)

Vulnerability from cvelistv5 – Published: 2026-08-12 22:35 – Updated: 2026-08-13 13:11

Title

Referer Validation Bypass in TL-WR820N Web Management Interface

Summary

The web interface of the affected device relies on the HTTP referrer header as part of request validation. Requests containing empty Referer value, or omitting the Referer header entirely, may be accepted and processed due to insufficient validation logic. Successful exploitation may allow an adjacent attacker with access to the web management interface to obtain device configuration details and other sensitive information.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-13 13:11 UTC

CWE

CWE-346 - Origin Validation Error

Assigner

TPLink

References

3 references

URL	Tags
https://www.tp-link.com/kr/support/download/tl-wr…	patch
https://www.tp-link.com/en/support/download/tl-wr…	patch
https://www.tp-link.com/en/support/faq/5243/	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TP-Link Systems Inc.	TL-WR820N v2	Affected: 0 , < 1.15.20 Build 260611 Rel.29552n (custom)

Credits

Seong Hun Jeong (HunSec)

Show details on NVD website

JSON

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                "id": "CVE-2026-15141",
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GHSA-FV83-QV7H-9C74

Vulnerability from github – Published: 2026-08-13 00:31 – Updated: 2026-08-13 00:31

Details

Successful exploitation may allow an adjacent attacker with access to the web management interface to obtain device configuration details and other sensitive information.

Severity

5.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-15141"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-346"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-12T23:17:19Z",
    "severity": "MODERATE"
  },
  "details": "The web\ninterface of the affected\ndevice relies on the HTTP referrer header as part of\nrequest validation.\u00a0 Requests\u00a0containing empty Referer value, or omitting\nthe Referer header entirely, may be accepted and processed due to insufficient\nvalidation logic.\n\n\n\n\n\nSuccessful exploitation may allow an adjacent attacker with access to the web management\ninterface to obtain device configuration details and other sensitive\ninformation.",
  "id": "GHSA-fv83-qv7h-9c74",
  "modified": "2026-08-13T00:31:28Z",
  "published": "2026-08-13T00:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15141"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/tl-wr820n/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/faq/5243"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/kr/support/download/tl-wr820n/#Firmware"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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"
    }
  ]
}

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.

Action not permitted

CVE-2026-15141 (GCVE-0-2026-15141)

GHSA-FV83-QV7H-9C74

Tags

Sightings

Nomenclature