CVE-2026-2451 Vulnerability Analysis & Exploit Details

CVE-2026-2451
Vulnerability Scoring

6.5
/10
High Risk

If left unpatched, CVE-2026-2451 could lead to major system disruptions or data loss.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2026-2451 Details

Status: Analyzed

Last updated: 🕧 13 Mar 2026, 12:39 UTC
Originally published on: 🕚 16 Feb 2026, 11:15 UTC

Time between publication and last update: 25 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2026-2451 Vulnerability Summary

CVE-2026-2451: Emails sent by pretix can utilize placeholders that will be filled with customer data. For example, when {name} is used in an email template, it will be replaced with the buyer's name for the final email. This mechanism contained a security-relevant bug: It was possible to exfiltrate information about the pretix system through specially crafted placeholder names such as {{event.__init__.__code__.co_filename}}. This way, an attacker with the ability to control email templates (usually every user of the pretix backend) could retrieve sensitive information from the system configuration, including even database passwords or API keys. pretix does include mechanisms to prevent the usage of such malicious placeholders, however due to a mistake in the code, they were not fully effective for this plugin. Out of caution, we recommend that you rotate all passwords and API keys contained in your pretix.cfg file.

Assessing the Risk of CVE-2026-2451

Access Complexity Graph

The exploitability of CVE-2026-2451 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-2451

CVE-2026-2451 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-2451, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-2451, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2026-2451 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: None
    CVE-2026-2451 poses no threat to data integrity.
  • Availability: None
    CVE-2026-2451 does not impact system availability.

CVE-2026-2451 References

External References

CWE Common Weakness Enumeration

CWE-627

Vulnerable Configurations

  • cpe:2.3:a:pretix:pretix:4.16.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.16.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.16.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.16.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.17.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.17.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.17.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.17.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.18.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.18.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.18.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.18.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.18.2:-:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.18.2:-:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.18.2:post1:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.18.2:post1:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.19.0:-:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.19.0:-:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.19.0:post1:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.19.0:post1:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.20.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.20.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.20.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.20.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.20.2:-:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.20.2:-:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.20.2:post1:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.20.2:post1:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.20.3:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.20.3:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:4.20.4:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:4.20.4:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.6.2:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.6.3:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.7.2:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.7.2:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.7.3:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.7.3:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.8.1:-:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.8.1:-:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.8.1:post1:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.8.1:post1:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.9.1:-:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.9.1:-:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.9.1:post1:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.9.1:post1:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.10.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.10.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.10.1:-:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.10.1:-:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.10.1:post1:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.10.1:post1:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2023.10.2:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2023.10.2:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.5.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.5.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.10.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.10.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2024.11.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2024.11.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.7.2:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.7.2:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.7.3:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.7.3:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.8.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.8.2:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.8.2:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.8.3:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.8.3:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.9.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.9.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.9.2:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.9.2:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.9.3:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.9.3:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.10.0:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.10.0:*:*:*:*:*:*:*
  • cpe:2.3:a:pretix:pretix:2025.10.1:*:*:*:*:*:*:*
    cpe:2.3:a:pretix:pretix:2025.10.1:*:*:*:*:*:*:*

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