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TI-2026-21316 Aliases CVE-2026-26377GHSA-jf6c-m3q5-vfm4

Cross Site Scripting vulnerability in Koha 25.11 and before allows a remote attacker to…

Priority LOW 25CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

Cross Site Scripting vulnerability in Koha 25.11 and before allows a remote attacker to execute arbitrary code via the News function.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00434 37th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

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
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:koha:koha:*:*:*:*:*:*:*:*up to 25.11.00VulnerableKoha
  • cpe:2.3:a:koha:koha:*:*:*:*:*:*:*:* Versions up to 25.11.00 Vulnerable ·Koha

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-26377
  2. 2026-10-03 Alias added: GHSA-jf6c-m3q5-vfm4

References

Exploit 1

Advisory 1

Other 1

  • TI-2024-18975 An issue in Koha ILS 23.05 and before allows a remote attacker to execute arbitrary code… CVSS 3.1CRITICAL 9.6
  • TI-2024-18976 Cross Site Scripting vulnerability in Koha ILS 23.05 and before allows a remote attacker… CVSS 3.1CRITICAL 9.6
  • TI-2026-24397 Authenticated SQL Injection in Koha displayby parameter of suggestion.pl CVSS 4.0HIGH 8.7
  • TI-2024-16095 CSV Injection vulnerability in '/members/moremember.pl' and '/admin/aqbudgets.pl'… CVSS 3.1HIGH 8.8
  • TI-2026-21318 Koha versions up to 25.11 contain a Server-Side Request Forgery (SSRF) vulnerability via… CVSS 3.1MEDIUM 6.5
  • TI-2015-03876 Multiple directory traversal vulnerabilities in Koha 3.14.x before 3.14.16, 3.16.x before… CVSS 3.0HIGH 7.5
See all 23 →

Sources

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