CVE-2026-26273 (GCVE-0-2026-26273)

Vulnerability from cvelistv5 – Published: 2026-02-13 21:45 – Updated: 2026-02-13 21:45
VLAI?
Title
Known affected by Account Takeover via Password Reset Token Leakage
Summary
Known is a social publishing platform. Prior to 1.6.3, a Critical Broken Authentication vulnerability exists in Known 1.6.2 and earlier. The application leaks the password reset token within a hidden HTML input field on the password reset page. This allows any unauthenticated attacker to retrieve the reset token for any user by simply querying the user's email, leading to full Account Takeover (ATO) without requiring access to the victim's email inbox. This vulnerability is fixed in 1.6.3.
Severity ?
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-640 - Weak Password Recovery Mechanism for Forgotten Password
Assigner
References
Impacted products
Vendor Product Version
idno known Affected: < 1.6.3
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "known",
          "vendor": "idno",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.6.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Known is a social publishing platform. Prior to 1.6.3, a Critical Broken Authentication vulnerability exists in Known 1.6.2 and earlier. The application leaks the password reset token within a hidden HTML input field on the password reset page. This allows any unauthenticated attacker to retrieve the reset token for any user by simply querying the user\u0027s email, leading to full Account Takeover (ATO) without requiring access to the victim\u0027s email inbox. This vulnerability is fixed in 1.6.3."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-640",
              "description": "CWE-640: Weak Password Recovery Mechanism for Forgotten Password",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-13T21:45:41.610Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/idno/known/security/advisories/GHSA-78wq-6gcv-w28r",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/idno/known/security/advisories/GHSA-78wq-6gcv-w28r"
        },
        {
          "name": "https://github.com/idno/known/commit/8439a0747471559fb1ea9f074b929d390f27e66a",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/idno/known/commit/8439a0747471559fb1ea9f074b929d390f27e66a"
        },
        {
          "name": "https://github.com/idno/known/releases/tag/1.6.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/idno/known/releases/tag/1.6.3"
        }
      ],
      "source": {
        "advisory": "GHSA-78wq-6gcv-w28r",
        "discovery": "UNKNOWN"
      },
      "title": "Known affected by Account Takeover via Password Reset Token Leakage"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-26273",
    "datePublished": "2026-02-13T21:45:41.610Z",
    "dateReserved": "2026-02-12T17:10:53.413Z",
    "dateUpdated": "2026-02-13T21:45:41.610Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-26273\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-02-13T22:16:11.330\",\"lastModified\":\"2026-02-13T22:16:11.330\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Known is a social publishing platform. Prior to 1.6.3, a Critical Broken Authentication vulnerability exists in Known 1.6.2 and earlier. The application leaks the password reset token within a hidden HTML input field on the password reset page. This allows any unauthenticated attacker to retrieve the reset token for any user by simply querying the user\u0027s email, leading to full Account Takeover (ATO) without requiring access to the victim\u0027s email inbox. This vulnerability is fixed in 1.6.3.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-200\"},{\"lang\":\"en\",\"value\":\"CWE-640\"}]}],\"references\":[{\"url\":\"https://github.com/idno/known/commit/8439a0747471559fb1ea9f074b929d390f27e66a\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/idno/known/releases/tag/1.6.3\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/idno/known/security/advisories/GHSA-78wq-6gcv-w28r\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.