Vulnerability-Lookup

CVE-2026-19127 (GCVE-0-2026-19127)

Vulnerability from cvelistv5 – Published: 2026-08-06 17:02 – Updated: 2026-08-07 14:03

Title

Insufficient verification of lifetime-deal redemption codes allows forgery of permanent paid subscriptions

Summary

An issue in the billing and license activation subsystem allows remote attackers to bypass payment authorization workflows. By exploiting insufficient cryptographic validation or lack of server-side state verification on promotional/lifetime-deal (LTD) redemption codes, an unauthenticated attacker can forge valid redemption tokens or replay existing single-use codes to activate permanent, tier-highest paid subscriptions without a financial transaction.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-345

Assigner

postiz

References

3 references

URL	Tags
https://github.com/gitroomhq/postiz-app/commit/38…	patch
https://github.com/gitroomhq/postiz-app/releases/…	release-notes
https://gadvisory.org/advisories/PSA-2026-NWZN9J	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
GitroomHQ	postiz-app	Affected: 0 , < 2.21.10 (semver)

Date Public

2026-06-22 13:46

Credits

Enno Gelhaus Enno Gelhaus Nevo David

Show details on NVD website

JSON

To clipboard

{
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                "id": "CVE-2026-19127",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-07T14:02:58.803040Z",
                "version": "2.0.3"
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        }
      ],
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        },
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          "time": "2026-06-21T18:00:00.000Z",
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          "time": "2026-06-22T13:20:00.000Z",
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        },
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          "time": "2026-06-22T13:44:00.000Z",
          "value": "Postiz has created the release and published the advisory."
        },
        {
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          "time": "2026-08-06T16:04:00.000Z",
          "value": "Postiz has assigned CVE-2026-19127 for this advisory."
        }
      ],
      "title": "Insufficient verification of lifetime-deal redemption codes allows forgery of permanent paid subscriptions",
      "workarounds": [
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    "dateReserved": "2026-08-06T15:49:22.192Z",
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    "state": "PUBLISHED"
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-08-09",
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FKIE_CVE-2026-19127

Vulnerability from fkie_nvd - Published: 2026-08-06 22:16 - Updated: 2026-08-07 14:16

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Summary

References

	URL	Tags
	4cdc9741-f887-419a-a2fd-acbbd2729276	https://gadvisory.org/advisories/PSA-2026-NWZN9J
	4cdc9741-f887-419a-a2fd-acbbd2729276	https://github.com/gitroomhq/postiz-app/commit/387d85dabe0223cd930714c19072a0aee58541ca
	4cdc9741-f887-419a-a2fd-acbbd2729276	https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.10

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageName": "postiz-app",
          "product": "postiz-app",
          "vendor": "GitroomHQ",
          "versions": [
            {
              "lessThan": "2.21.10",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "4cdc9741-f887-419a-a2fd-acbbd2729276"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue in the billing and license activation subsystem allows remote attackers to bypass payment authorization workflows. By exploiting insufficient cryptographic validation or lack of server-side state verification on promotional/lifetime-deal (LTD) redemption codes, an unauthenticated attacker can forge valid redemption tokens or replay existing single-use codes to activate permanent, tier-highest paid subscriptions without a financial transaction."
    }
  ],
  "id": "CVE-2026-19127",
  "lastModified": "2026-08-07T14:16:57.703",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "4cdc9741-f887-419a-a2fd-acbbd2729276",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-19127",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-07T14:02:58.803040Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-06T22:16:55.557",
  "references": [
    {
      "source": "4cdc9741-f887-419a-a2fd-acbbd2729276",
      "url": "https://gadvisory.org/advisories/PSA-2026-NWZN9J"
    },
    {
      "source": "4cdc9741-f887-419a-a2fd-acbbd2729276",
      "url": "https://github.com/gitroomhq/postiz-app/commit/387d85dabe0223cd930714c19072a0aee58541ca"
    },
    {
      "source": "4cdc9741-f887-419a-a2fd-acbbd2729276",
      "url": "https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.10"
    }
  ],
  "sourceIdentifier": "4cdc9741-f887-419a-a2fd-acbbd2729276",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-345"
        }
      ],
      "source": "4cdc9741-f887-419a-a2fd-acbbd2729276",
      "type": "Secondary"
    }
  ]
}

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.

Action not permitted

CVE-2026-19127 (GCVE-0-2026-19127)

FKIE_CVE-2026-19127

Tags

Sightings

Nomenclature