CVE-2026-77643CWE-79cross-site-scripting

CVE-2026-77643

Medium · published August 21, 2026

CVSS v3.1
4.4
EPSS
0%
Percentile
15.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00252 · 15.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-21T02:18Z
References (3)
https://bugs.debian.org/1144490 · [email protected]https://lists.xapian.org/pipermail/xapian-devel/2026-August/003429.html · [email protected]https://trac.xapian.org/wiki/SecurityFixes/2018-07-02#a2026-08-13update · [email protected]
EPSS history
Timeline
  • 20 AUG 21:23Z
    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…
    cvelistv5