PYSEC-2026-2552

Vulnerability from pysec - Published: 2026-07-13 15:46 - Updated: 2026-07-13 16:04
VLAI
Details

Summary

An open redirect vulnerability in the account confirmation endpoint allows an unauthenticated attacker to craft a URL hosted on a legitimate Kiwi TCMS instance that redirects victims to an arbitrary external domain. The attack surface is particularly relevant for phishing campaigns targeting Kiwi TCMS users, as the malicious link originates from a trusted organizational hostname.

Impact

This is an open redirect vulnerability (CWE-601). Any unauthenticated attacker can exploit it against any user of a Kiwi TCMS deployment.

The primary risk is phishing. Because Kiwi TCMS is typically deployed as an internal tool for engineering and QA teams, a redirect from the organization's own hostname carries high implicit trust. An attacker can use this endpoint to: - Redirect victims to a credential-harvesting page styled to match the Kiwi TCMS or corporate SSO login. - Bypass email security filters and link-reputation checks that allowlist the organization's domain. - Distribute malware via a convincing "confirm your account" lure.

Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Impacted products
Name purl
kiwitcms pkg:pypi/kiwitcms
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "kiwitcms",
        "purl": "pkg:pypi/kiwitcms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "12.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "10.0",
        "10.1",
        "10.2",
        "10.3",
        "10.3.999",
        "10.4",
        "10.5",
        "11.0",
        "11.1",
        "11.3",
        "11.4",
        "11.5",
        "11.6",
        "11.7",
        "12.0",
        "12.1",
        "12.2",
        "12.3",
        "12.4",
        "6.10",
        "6.11",
        "6.2.1",
        "6.3",
        "6.4",
        "6.5",
        "6.5.3",
        "6.6",
        "6.7",
        "6.8",
        "6.9",
        "7.0",
        "7.1",
        "7.2",
        "7.2.1",
        "7.3",
        "8.0",
        "8.1",
        "8.1.99",
        "8.2",
        "8.3",
        "8.4",
        "8.5",
        "8.6",
        "8.6.1",
        "8.7",
        "8.8",
        "8.9",
        "9.0",
        "9.999"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-54724",
    "GHSA-hmj5-jm8h-h9fh"
  ],
  "details": "### Summary\n\nAn open redirect vulnerability in the account confirmation endpoint allows an unauthenticated attacker to craft a URL hosted on a legitimate Kiwi TCMS instance that redirects victims to an arbitrary external domain. The attack surface is particularly relevant for phishing campaigns targeting Kiwi TCMS users, as the malicious link originates from a trusted organizational hostname.\n\n### Impact\n\nThis is an open redirect vulnerability (CWE-601). Any unauthenticated attacker can exploit it against any user of a Kiwi TCMS deployment.\n\nThe primary risk is phishing. Because Kiwi TCMS is typically deployed as an internal tool for engineering and QA teams, a redirect from the organization\u0027s own hostname carries high implicit trust. An attacker can use this endpoint to:\n- Redirect victims to a credential-harvesting page styled to match the Kiwi TCMS or corporate SSO login.\n- Bypass email security filters and link-reputation checks that allowlist the organization\u0027s domain.\n- Distribute malware via a convincing \"confirm your account\" lure.",
  "id": "PYSEC-2026-2552",
  "modified": "2026-07-13T16:04:27.774507Z",
  "published": "2026-07-13T15:46:28.941600Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-hmj5-jm8h-h9fh"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/kiwitcms/Kiwi"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kiwitcms/Kiwi/releases/tag/v16.1"
    },
    {
      "type": "WEB",
      "url": "https://kiwitcms.org/blog/kiwi-tcms-team/2026/06/24/kiwi-tcms-161"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/kiwitcms"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-hmj5-jm8h-h9fh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54724"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Kiwi TCMS has an Open Redirect via unvalidated next parameter in account confirmation endpoint"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.