What is CVE-2023-51639?

CVE-2023-51639 is a critical-severity vulnerability in Allegra, classified under Path Traversal. CVSS score: 9.8/10. Published 2024-11-22.

How severe is CVE-2023-51639?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Path Traversal in Allegra

CVE-2023-51639

Allegra downloadExportedChart Directory Traversal Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Allegra. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloadExportedChart action. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-22361.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.024 (82.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Allegra — versions 7.5.0.24
Alltena Allegra

Weakness classification (CWE)

CWE-22 — Path Traversal

References

zdi-disclosures@trendmicro.com (x_research-advisory, Third Party Advisory)
zdi-disclosures@trendmicro.com (vendor-advisory, Release Notes)

Frequently asked questions

What is CVE-2023-51639?: CVE-2023-51639 is a critical-severity vulnerability in Allegra, classified under Path Traversal. CVSS score: 9.8/10. Published 2024-11-22.
How severe is CVE-2023-51639?: Critical severity. CVSS v3 base score is 9.8 out of 10.