CVE-2026-77643

Published Aug 20, 2026

Last updated 4 days ago

CVSS medium 4.4

Overview

Description
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.
Source
cve@mitre.org
NVD status
Received

Risk scores

CVSS 3.1

Type
Secondary
Base score
4.4
Impact score
2.7
Exploitability score
1.3
Vector string
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Severity
MEDIUM

Weaknesses

cve@mitre.org
CWE-79

Social media

Hype score
Not currently trending

References

Sources include official advisories and independent security research.