CVE-2026-77643
Medium
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.
SeverityMedium
CVSS4.4
Exploit probability—
ProductXapian-core
PublishedAug 20, 2026
First seenAug 20, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- Xapian xapian-core2.1.0, 1.4.32 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Xapian xapian-core | 2.0.0 ≤ v < 2.1.0, v < 1.4.32 | 2.1.0, 1.4.32 |
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