CVE-2026-129134 (GCVE-0-2026-129134)

Vulnerability from cvelistv5 – Published: 2026-11-13 16:23 – Updated: 2026-11-13 16:23
VLAI
Title
MRBS before 1.13.0 Password Reset Poisoning via Host Header Injection
Summary
MRBS before 1.13.0 contains a password reset poisoning vulnerability that allows unauthenticated attackers to redirect reset links by forging the Host header when $url_base is unset. Attackers can request a reset for a victim so AuthDb::notifyUser() emails a link pointing to their host, capturing the reset key when opened to take over accounts including administrators.
Severity
8.6 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CWE
  • CWE-640 - Weak Password Recovery Mechanism for Forgotten Password
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
meeting-room-booking-system mrbs-code Affected: 0 , < 1.13.0 (semver)
Create a notification for this product.
Date Public
2026-11-12 00:00
Credits
leediay153 from Viettel Post John Beranek
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/meeting-room-booking-system/mrbs-code",
          "product": "mrbs-code",
          "vendor": "meeting-room-booking-system",
          "versions": [
            {
              "lessThan": "1.13.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "leediay153 from Viettel Post"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "John Beranek"
        }
      ],
      "datePublic": "2026-11-12T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "MRBS before 1.13.0 contains a password reset poisoning vulnerability that allows unauthenticated attackers to redirect reset links by forging the Host header when $url_base is unset. Attackers can request a reset for a victim so AuthDb::notifyUser() emails a link pointing to their host, capturing the reset key when opened to take over accounts including administrators."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          },
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        },
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
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      "problemTypes": [
        {
          "descriptions": [
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              "description": "Weak Password Recovery Mechanism for Forgotten Password",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-13T16:23:34.805Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-73cv-hx7f-9v27)",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/meeting-room-booking-system/mrbs-code/security/advisories/GHSA-73cv-hx7f-9v27"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/meeting-room-booking-system/mrbs-code/commit/92f6f5610072ddb9e1b38074c410fc8be56947ed"
        },
        {
          "name": "mrbs-code v1.13.0 Release Notes",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/meeting-room-booking-system/mrbs-code/releases/tag/v1.13.0"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/meeting-room-booking-system/mrbs-code/blob/299686ed64174a66448699f5ca0fb5e0e0ea9faa/web/lib/MRBS/Auth/AuthDb.php#L613"
        },
        {
          "name": "VulnCheck Advisory: MRBS before 1.13.0 Password Reset Poisoning via Host Header Injection",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/mrbs-before-1.13.0-password-reset-poisoning-via-host-header-injection"
        }
      ],
      "title": "MRBS before 1.13.0 Password Reset Poisoning via Host Header Injection",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-129134",
    "datePublished": "2026-11-13T16:23:34.805Z",
    "dateReserved": "2026-11-13T16:01:04.767Z",
    "dateUpdated": "2026-11-13T16:23:34.805Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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