VulnerabilityDeferred

CVE-2026-11443

Allegra downloadAttachment Cross-Site Scripting Authentication Bypass Vulnerability.

MEDIUM 4.6EPSS 0.82%

Does this matter?

Lower severity and a low EPSS score (0.82%). Track it; it rarely justifies an emergency change on its own.

Description

Allegra downloadAttachment Cross-Site Scripting Authentication Bypass Vulnerability. This vulnerability allows remote attackers to execute arbitrary script on affected installations of Allegra. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the downloadAttachment method. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of arbitrary script. An attacker can leverage this vulnerability to execute script in the context of the current user. Was ZDI-CAN-28236.

CVSS 3.0: 4.6 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
EPSS: 0.82% probability · 55th percentile
CISA KEV: Not listed
Weakness: CWE-79
Source: zdi-disclosures@trendmicro.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.