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CVE-2026-11443

MEDIUM
4.6
CVSS 3.0
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.

Metadata

CVE ID
CVE-2026-11443
State
PUBLISHED
Assigner
zdi
Reserved
2026-06-05 22:38 UTC
Published
2026-06-12 23:04 UTC
Last updated
2026-06-12 23:04 UTC
Primary CWE
CWE-79
CWE-79: Improper Neutralization of Input During Web Page Gen…
Vendor / Product
Allegra / Allegra
Sources
cve.org  ·  NVD

Severity & Metrics

4.6 MEDIUM CVSS 3.0
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Affected products (1)
VendorProductPlatformVersions
Allegra Allegra — 8.1.6.22
Weakness (CWE)
CWESourceDescription
CWE-79 cna CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS scores (1)
ScoreSeverityVersionSourceVector
4.6 MEDIUM 3.0 cna CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
References (2)
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