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TI-2026-54113 Aliases CVE-2026-77643GHSA-955x-jgcw-hcxh

Cross-site scripting in xapian-core

Priority LOW 20CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
High
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 3 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00252 16th percentileScored 2026-11-08
Fix Partial xapian-core (Xapian): 2.1.0, 1.4.32Red Hat: 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Xapianxapian-core2.0.0 to before 2.1.0; before 1.4.322.1.0, 1.4.32Patch availableCNA
  • xapian-core VendorXapian Affected 2.0.0 to before 2.1.0; before 1.4.32 Fixed in 2.1.0, 1.4.32 Patch available CNA

Remediation

  • Fix · CNA xapian-core (Xapian) Fixed in 2.1.0, 1.4.32

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-77643
  2. 2026-10-03 Alias added: GHSA-955x-jgcw-hcxh

References

Other 3

  • TI-2018-00456 Cross-site scripting in Xapian xapian-core before 1.4.6 CVSS 3.0MEDIUM 6.1
  • TI-2009-02807 Cross-site scripting (XSS) vulnerability in Xapian Omega before 1.0.16 allows remote… CVSS 2.0MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences