CVE-2026-77643

MEDIUM CVSS 3.1: 4.4 EPSS 0.16%
Updated Sep 09, 2026
Parameter Value
CVSS 4.4 (MEDIUM)
Affected Versions before 2.1.0
Type CWE-79 (Cross-Site Scripting (XSS))
Public PoC No

A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 2.1.0 and before 1.4.32 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). NOTE: this issue exists because of a missed corner case of CVE-2018-0499.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v3.1